<?xml version="1.0" encoding="UTF-8" ?>
<!-- Generated by DataTracks version 1.1.6 on 30-Jul-2014 [05:44:01] {PM} EST - www.datatracks.com -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#DocumentAndEntityInformation" roleURI="http://www.iridium.com/role/DocumentAndEntityInformation" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#StockbasedCompensation" roleURI="http://www.iridium.com/role/StockbasedCompensation" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#EquityTransactionsAndInstruments" roleURI="http://www.iridium.com/role/EquityTransactionsAndInstruments" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#NetIncomePerShare" roleURI="http://www.iridium.com/role/NetIncomePerShare" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#SignificantAccountingPoliciesPolicies" roleURI="http://www.iridium.com/role/SignificantAccountingPoliciesPolicies" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#SignificantAccountingPoliciesTables" roleURI="http://www.iridium.com/role/SignificantAccountingPoliciesTables" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesTables" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesTables" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CommitmentsAndContingenciesTables" roleURI="http://www.iridium.com/role/CommitmentsAndContingenciesTables" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#NetIncomePerShareTables" roleURI="http://www.iridium.com/role/NetIncomePerShareTables" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#SignificantAccountingPoliciesDetails" roleURI="http://www.iridium.com/role/SignificantAccountingPoliciesDetails" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CondensedConsolidatedBalanceSheets" roleURI="http://www.iridium.com/role/CondensedConsolidatedBalanceSheets" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails1" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails1" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails2" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails2" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetailsTextual" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetailsTextual" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CommitmentsAndContingenciesDetails" roleURI="http://www.iridium.com/role/CommitmentsAndContingenciesDetails" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CommitmentsAndContingenciesDetailsTextual" roleURI="http://www.iridium.com/role/CommitmentsAndContingenciesDetailsTextual" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#StockbasedCompensationDetailsTextual" roleURI="http://www.iridium.com/role/StockbasedCompensationDetailsTextual" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#EquityTransactionsAndInstrumentsDetailsTextual" roleURI="http://www.iridium.com/role/EquityTransactionsAndInstrumentsDetailsTextual" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#NetIncomePerShareDetails" roleURI="http://www.iridium.com/role/NetIncomePerShareDetails" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#NetIncomePerShareDetailsTextual" roleURI="http://www.iridium.com/role/NetIncomePerShareDetailsTextual" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CondensedConsolidatedBalanceSheetsParenthetical" roleURI="http://www.iridium.com/role/CondensedConsolidatedBalanceSheetsParenthetical" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncome" roleURI="http://www.iridium.com/role/CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncome" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CondensedConsolidatedStatementsOfCashFlows" roleURI="http://www.iridium.com/role/CondensedConsolidatedStatementsOfCashFlows" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#BasisOfPresentationAndPrinciplesOfConsolidation" roleURI="http://www.iridium.com/role/BasisOfPresentationAndPrinciplesOfConsolidation" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#SignificantAccountingPolicies" roleURI="http://www.iridium.com/role/SignificantAccountingPolicies" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CashAndCashEquivalentsRestrictedCashAndMarketableSecurities" roleURI="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecurities" />

  <roleRef xlink:type="simple" xlink:href="irdm-20140630.xsd#CommitmentsAndContingencies" roleURI="http://www.iridium.com/role/CommitmentsAndContingencies" />

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/DocumentAndEntityInformation">
    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_DocumentAndEntityInformationAbstract" xlink:label="loc_irdm_DocumentAndEntityInformationAbstract_425" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentInformationTable" xlink:label="loc_dei_DocumentInformationTable_426" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DocumentAndEntityInformationAbstract_425" xlink:to="loc_dei_DocumentInformationTable_426" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_510" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_426" xlink:to="loc_us-gaap_StatementClassOfStockAxis_510" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_511" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_510" xlink:to="loc_us-gaap_ClassOfStockDomain_511" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentInformationLineItems" xlink:label="loc_dei_DocumentInformationLineItems_427" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_426" xlink:to="loc_dei_DocumentInformationLineItems_427" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_433" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_EntityRegistrantName_433" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_434" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_EntityCentralIndexKey_434" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_435" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_CurrentFiscalYearEndDate_435" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_436" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_EntityFilerCategory_436" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_437" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_TradingSymbol_437" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_438" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_438" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_428" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_DocumentType_428" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_429" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_AmendmentFlag_429" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_430" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_DocumentPeriodEndDate_430" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_432" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_DocumentFiscalPeriodFocus_432" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_431" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_427" xlink:to="loc_dei_DocumentFiscalYearFocus_431" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/StockbasedCompensation">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_19" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_20" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_19" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_20" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/EquityTransactionsAndInstruments">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_22" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_23" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_22" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_23" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/NetIncomePerShare">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_25" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_26" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_25" xlink:to="loc_us-gaap_EarningsPerShareTextBlock_26" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/SignificantAccountingPoliciesPolicies">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_28" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StandardProductWarrantyPolicy" xlink:label="loc_us-gaap_StandardProductWarrantyPolicy_29" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_28" xlink:to="loc_us-gaap_StandardProductWarrantyPolicy_29" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:label="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_30" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_28" xlink:to="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_30" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_451" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_28" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_451" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/SignificantAccountingPoliciesTables">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_32" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_33" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_32" xlink:to="loc_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_33" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesTables">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_35" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock_36" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_35" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock_36" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketableSecuritiesTextBlock" xlink:label="loc_us-gaap_MarketableSecuritiesTextBlock_37" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_35" xlink:to="loc_us-gaap_MarketableSecuritiesTextBlock_37" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:label="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_38" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_35" xlink:to="loc_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_38" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CommitmentsAndContingenciesTables">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_466" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilitiesInterestPayableTableTextBlock" xlink:label="loc_irdm_LineOfCreditFacilitiesInterestPayableTableTextBlock_467" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_466" xlink:to="loc_irdm_LineOfCreditFacilitiesInterestPayableTableTextBlock_467" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/NetIncomePerShareTables">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_41" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_42" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_41" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_42" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/SignificantAccountingPoliciesDetails">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_44" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SignificantAccountingPoliciesTable" xlink:label="loc_irdm_SignificantAccountingPoliciesTable_45" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_44" xlink:to="loc_irdm_SignificantAccountingPoliciesTable_45" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_46" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesTable_45" xlink:to="loc_us-gaap_StatementClassOfStockAxis_46" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_47" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_46" xlink:to="loc_us-gaap_ClassOfStockDomain_47" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SignificantAccountingPoliciesLineItems" xlink:label="loc_irdm_SignificantAccountingPoliciesLineItems_48" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesTable_45" xlink:to="loc_irdm_SignificantAccountingPoliciesLineItems_48" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_49" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesLineItems_48" xlink:to="loc_us-gaap_ProductWarrantyAccrual_49" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_50" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesLineItems_48" xlink:to="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_50" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_51" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesLineItems_48" xlink:to="loc_us-gaap_ProductWarrantyAccrualPayments_51" use="optional" order="7" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_52" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SignificantAccountingPoliciesLineItems_48" xlink:to="loc_us-gaap_ProductWarrantyAccrual_52" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CondensedConsolidatedBalanceSheets">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_67" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_68" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_67" xlink:to="loc_us-gaap_StatementTable_68" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_69" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_68" xlink:to="loc_us-gaap_StatementClassOfStockAxis_69" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_70" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_69" xlink:to="loc_us-gaap_ClassOfStockDomain_70" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_439" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_70" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_439" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_440" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_70" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_440" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_71" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_68" xlink:to="loc_us-gaap_StatementLineItems_71" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_72" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_71" xlink:to="loc_us-gaap_AssetsAbstract_72" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_73" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_72" xlink:to="loc_us-gaap_AssetsCurrentAbstract_73" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_74" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_74" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="loc_us-gaap_MarketableSecurities_75" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_MarketableSecurities_75" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_76" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_76" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_77" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_InventoryNet_77" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetCurrent_78" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_DeferredTaxAssetsNetCurrent_78" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="loc_us-gaap_IncomeTaxesReceivable_79" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_IncomeTaxesReceivable_79" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_80" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_80" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_81" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_AssetsCurrent_81" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_82" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_82" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_83" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_83" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_84" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_84" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_85" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_85" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_86" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_86" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_87" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_Goodwill_87" use="optional" order="22" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_88" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_73" xlink:to="loc_us-gaap_Assets_88" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_89" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_71" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_89" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_90" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_89" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_90" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_91" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_AccountsPayableCurrent_91" use="optional" order="26" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AccruedExpensesAndOtherCurrentLiabilities" xlink:label="loc_irdm_AccruedExpensesAndOtherCurrentLiabilities_92" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_irdm_AccruedExpensesAndOtherCurrentLiabilities_92" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_93" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_InterestPayableCurrent_93" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="loc_us-gaap_DeferredRevenueCurrent_94" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_DeferredRevenueCurrent_94" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_95" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_LiabilitiesCurrent_95" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AccruedSatelliteOperationsAndMaintenanceExpenseNoncurrent" xlink:label="loc_irdm_AccruedSatelliteOperationsAndMaintenanceExpenseNoncurrent_96" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_irdm_AccruedSatelliteOperationsAndMaintenanceExpenseNoncurrent_96" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermLineOfCredit" xlink:label="loc_us-gaap_LongTermLineOfCredit_97" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_LongTermLineOfCredit_97" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_98" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_98" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_99" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_99" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_100" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_Liabilities_100" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_101" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_90" xlink:to="loc_us-gaap_CommitmentsAndContingencies_101" use="optional" order="36" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_102" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_89" xlink:to="loc_us-gaap_StockholdersEquityAbstract_102" use="optional" order="37" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_103" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_PreferredStockValue_103" use="optional" order="38" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_104" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_CommonStockValue_104" use="optional" order="39" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_105" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_AdditionalPaidInCapital_105" use="optional" order="40" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_106" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_106" use="optional" order="41" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_107" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_107" use="optional" order="42" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_108" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_StockholdersEquity_108" use="optional" order="43" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_109" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_102" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_109" use="optional" order="44" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_111" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_112" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_111" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_112" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_113" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_112" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_113" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_114" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_113" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_114" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_115" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_114" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_115" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_116" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_114" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_116" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsLineItems" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_117" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_112" xlink:to="loc_us-gaap_CashAndCashEquivalentsLineItems_117" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_117" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_119" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" xlink:to="loc_us-gaap_Cash_119" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MoneyMarketFundsAtCarryingValue" xlink:label="loc_us-gaap_MoneyMarketFundsAtCarryingValue_120" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" xlink:to="loc_us-gaap_MoneyMarketFundsAtCarryingValue_120" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommercialPaperAtCarryingValue" xlink:label="loc_us-gaap_CommercialPaperAtCarryingValue_121" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" xlink:to="loc_us-gaap_CommercialPaperAtCarryingValue_121" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_122" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_118" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_122" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails1">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_124" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_125" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_124" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_125" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_126" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_125" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_126" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_127" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_126" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_127" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_128" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_127" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_128" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_129" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_127" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_129" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsLineItems" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_130" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_125" xlink:to="loc_us-gaap_CashAndCashEquivalentsLineItems_130" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketableSecuritiesAbstract" xlink:label="loc_us-gaap_MarketableSecuritiesAbstract_131" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_130" xlink:to="loc_us-gaap_MarketableSecuritiesAbstract_131" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_132" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_131" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_132" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommercialPaper" xlink:label="loc_us-gaap_CommercialPaper_133" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_131" xlink:to="loc_us-gaap_CommercialPaper_133" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="loc_us-gaap_MarketableSecurities_134" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesAbstract_131" xlink:to="loc_us-gaap_MarketableSecurities_134" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetails2">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_136" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_137" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_136" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_137" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_138" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_137" xlink:to="loc_us-gaap_StatementClassOfStockAxis_138" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_139" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_138" xlink:to="loc_us-gaap_ClassOfStockDomain_139" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_137" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" xlink:to="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedCost" xlink:label="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedCost_142" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedCost_142" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableforsaleSecuritiesContinuousUnrealizedGainPositionLessThan12MonthsAggregateGainLoss" xlink:label="loc_irdm_AvailableforsaleSecuritiesContinuousUnrealizedGainPositionLessThan12MonthsAggregateGainLoss_144" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableforsaleSecuritiesContinuousUnrealizedGainPositionLessThan12MonthsAggregateGainLoss_144" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedFairValue" xlink:label="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedFairValue_146" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesMatureWithinOneYearAmortizedFairValue_146" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedCost" xlink:label="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedCost_143" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedCost_143" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedUnrealizedGainLoss" xlink:label="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedUnrealizedGainLoss_145" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsAmortizedUnrealizedGainLoss_145" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsFairValue" xlink:label="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsFairValue_147" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_141" xlink:to="loc_irdm_AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearWithinThreeYearsFairValue_147" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommercialPaperAbstract" xlink:label="loc_irdm_CommercialPaperAbstract_148" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" xlink:to="loc_irdm_CommercialPaperAbstract_148" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommercialPaperMatureWithinOneYearAmortizedCost" xlink:label="loc_irdm_CommercialPaperMatureWithinOneYearAmortizedCost_149" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommercialPaperAbstract_148" xlink:to="loc_irdm_CommercialPaperMatureWithinOneYearAmortizedCost_149" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommercialPaperMatureWithinOneYearUnrealizedGainLoss" xlink:label="loc_irdm_CommercialPaperMatureWithinOneYearUnrealizedGainLoss_150" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommercialPaperAbstract_148" xlink:to="loc_irdm_CommercialPaperMatureWithinOneYearUnrealizedGainLoss_150" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommercialPaperMatureWithinOneYearEstimatedFairValue" xlink:label="loc_irdm_CommercialPaperMatureWithinOneYearEstimatedFairValue_151" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommercialPaperAbstract_148" xlink:to="loc_irdm_CommercialPaperMatureWithinOneYearEstimatedFairValue_151" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_152" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_152" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGainLoss1" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGainLoss1_153" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGainLoss1_153" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_154" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_140" xlink:to="loc_us-gaap_AvailableForSaleSecurities_154" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecuritiesDetailsTextual">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_156" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:label="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_157" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_156" xlink:to="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_157" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_158" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_157" xlink:to="loc_us-gaap_StatementClassOfStockAxis_158" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_159" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_158" xlink:to="loc_us-gaap_ClassOfStockDomain_159" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_157" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_161" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_161" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_162" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_162" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss_163" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss_163" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains_164" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains_164" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_UnrealizedGainLossOnSecuritiesNetOfTax" xlink:label="loc_irdm_UnrealizedGainLossOnSecuritiesNetOfTax_165" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_160" xlink:to="loc_irdm_UnrealizedGainLossOnSecuritiesNetOfTax_165" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CommitmentsAndContingenciesDetails">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_167" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsAndContingenciesTable" xlink:label="loc_irdm_CommitmentsAndContingenciesTable_168" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_167" xlink:to="loc_irdm_CommitmentsAndContingenciesTable_168" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_169" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_168" xlink:to="loc_us-gaap_StatementClassOfStockAxis_169" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_170" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_169" xlink:to="loc_us-gaap_ClassOfStockDomain_170" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditPaymentTermAxis" xlink:label="loc_irdm_LineOfCreditPaymentTermAxis_171" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_168" xlink:to="loc_irdm_LineOfCreditPaymentTermAxis_171" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditPaymentTermDomain" xlink:label="loc_irdm_LineOfCreditPaymentTermDomain_460" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_LineOfCreditPaymentTermAxis_171" xlink:to="loc_irdm_LineOfCreditPaymentTermDomain_460" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CashPaymentsMember" xlink:label="loc_irdm_CashPaymentsMember_461" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_LineOfCreditPaymentTermDomain_460" xlink:to="loc_irdm_CashPaymentsMember_461" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_DeemedLoanMember" xlink:label="loc_irdm_DeemedLoanMember_462" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_LineOfCreditPaymentTermDomain_460" xlink:to="loc_irdm_DeemedLoanMember_462" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_459" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_168" xlink:to="loc_us-gaap_CreditFacilityAxis_459" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_464" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_459" xlink:to="loc_us-gaap_CreditFacilityDomain_464" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_465" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_464" xlink:to="loc_us-gaap_LineOfCreditMember_465" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsAndContingenciesLineItems" xlink:label="loc_irdm_CommitmentsAndContingenciesLineItems_463" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_168" xlink:to="loc_irdm_CommitmentsAndContingenciesLineItems_463" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_516" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_us-gaap_InterestPayableCurrent_516" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityIncreaseAccruedInterest" xlink:label="loc_us-gaap_LineOfCreditFacilityIncreaseAccruedInterest_517" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_us-gaap_LineOfCreditFacilityIncreaseAccruedInterest_517" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityInterestPaymentsDuringPeriod" xlink:label="loc_irdm_LineOfCreditFacilityInterestPaymentsDuringPeriod_523" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_LineOfCreditFacilityInterestPaymentsDuringPeriod_523" use="optional" order="14" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_519" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_us-gaap_InterestPayableCurrent_519" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestPayableCurrentCash" xlink:label="loc_irdm_InterestPayableCurrentCash_520" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestPayableCurrentCash_520" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestExpenseCash" xlink:label="loc_irdm_InterestExpenseCash_522" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestExpenseCash_522" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityCashInterestPaymentsDuringPeriod" xlink:label="loc_irdm_LineOfCreditFacilityCashInterestPaymentsDuringPeriod_518" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_LineOfCreditFacilityCashInterestPaymentsDuringPeriod_518" use="optional" order="18" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestPayableCurrentCash" xlink:label="loc_irdm_InterestPayableCurrentCash_521" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestPayableCurrentCash_521" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestPayableCurrentDeemedLoan" xlink:label="loc_irdm_InterestPayableCurrentDeemedLoan_524" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestPayableCurrentDeemedLoan_524" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestExpenseDeemedLoan" xlink:label="loc_irdm_InterestExpenseDeemedLoan_526" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestExpenseDeemedLoan_526" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityDeemedLoanInterestPaymentsDuringPeriod" xlink:label="loc_irdm_LineOfCreditFacilityDeemedLoanInterestPaymentsDuringPeriod_527" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_LineOfCreditFacilityDeemedLoanInterestPaymentsDuringPeriod_527" use="optional" order="22" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestPayableCurrentDeemedLoan" xlink:label="loc_irdm_InterestPayableCurrentDeemedLoan_525" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_463" xlink:to="loc_irdm_InterestPayableCurrentDeemedLoan_525" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CommitmentsAndContingenciesDetailsTextual">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_174" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsAndContingenciesTable" xlink:label="loc_irdm_CommitmentsAndContingenciesTable_175" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_174" xlink:to="loc_irdm_CommitmentsAndContingenciesTable_175" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsAxis" xlink:label="loc_irdm_CommitmentsAxis_176" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_175" xlink:to="loc_irdm_CommitmentsAxis_176" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsDomain" xlink:label="loc_irdm_CommitmentsDomain_177" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAxis_176" xlink:to="loc_irdm_CommitmentsDomain_177" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_FsdMember" xlink:label="loc_irdm_FsdMember_178" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_FsdMember_178" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ThalesAleniaSpaceFranceMember" xlink:label="loc_irdm_ThalesAleniaSpaceFranceMember_179" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_ThalesAleniaSpaceFranceMember_179" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SpaceExplorationTechnologiesCorpMember" xlink:label="loc_irdm_SpaceExplorationTechnologiesCorpMember_180" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_SpaceExplorationTechnologiesCorpMember_180" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_KosmotrasMember" xlink:label="loc_irdm_KosmotrasMember_181" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_KosmotrasMember_181" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_HarrisMember" xlink:label="loc_irdm_HarrisMember_182" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_HarrisMember_182" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TechnicalSupportCenterMember" xlink:label="loc_irdm_TechnicalSupportCenterMember_183" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsDomain_177" xlink:to="loc_irdm_TechnicalSupportCenterMember_183" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_184" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_175" xlink:to="loc_us-gaap_StatementClassOfStockAxis_184" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_185" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_184" xlink:to="loc_us-gaap_ClassOfStockDomain_185" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SeriesCumulativeConvertiblePreferredStockMember" xlink:label="loc_irdm_SeriesCumulativeConvertiblePreferredStockMember_186" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_185" xlink:to="loc_irdm_SeriesCumulativeConvertiblePreferredStockMember_186" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_482" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_185" xlink:to="loc_us-gaap_ConvertiblePreferredStockMember_482" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_187" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_175" xlink:to="loc_us-gaap_CreditFacilityAxis_187" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_188" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_187" xlink:to="loc_us-gaap_CreditFacilityDomain_188" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_189" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_188" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_189" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_481" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_188" xlink:to="loc_us-gaap_LineOfCreditMember_481" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_190" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_175" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_190" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_479" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_190" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_479" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_480" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_479" xlink:to="loc_us-gaap_SubsequentEventMember_480" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsAndContingenciesLineItems" xlink:label="loc_irdm_CommitmentsAndContingenciesLineItems_478" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesTable_175" xlink:to="loc_irdm_CommitmentsAndContingenciesLineItems_478" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConstructionInProgressGross" xlink:label="loc_us-gaap_ConstructionInProgressGross_191" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_us-gaap_ConstructionInProgressGross_191" use="optional" order="22" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_MaximumCommitmentAmountDueToRelatedPartyAmended" xlink:label="loc_irdm_MaximumCommitmentAmountDueToRelatedPartyAmended_192" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_MaximumCommitmentAmountDueToRelatedPartyAmended_192" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommitmentsPriceForDesignAndBuildOfSatellites" xlink:label="loc_irdm_CommitmentsPriceForDesignAndBuildOfSatellites_193" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_CommitmentsPriceForDesignAndBuildOfSatellites_193" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_RefundableDeposit" xlink:label="loc_irdm_RefundableDeposit_194" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_RefundableDeposit_194" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermLineOfCredit" xlink:label="loc_us-gaap_LongTermLineOfCredit_195" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_us-gaap_LongTermLineOfCredit_195" use="optional" order="26" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_196" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_196" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_MinimumRequiredCashReserveBalanceForCreditFacility" xlink:label="loc_irdm_MinimumRequiredCashReserveBalanceForCreditFacility_197" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_MinimumRequiredCashReserveBalanceForCreditFacility_197" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_MinimumRequiredCashReserveBalanceForCreditFacilityAtBeginningOfRepaymentPeriod" xlink:label="loc_irdm_MinimumRequiredCashReserveBalanceForCreditFacilityAtBeginningOfRepaymentPeriod_198" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_MinimumRequiredCashReserveBalanceForCreditFacilityAtBeginningOfRepaymentPeriod_198" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_528" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_us-gaap_InterestExpense_528" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_203" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_203" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityCommitmentFeePayable" xlink:label="loc_irdm_LineOfCreditFacilityCommitmentFeePayable_204" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_LineOfCreditFacilityCommitmentFeePayable_204" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PurchaseObligationAmountForSingleLaunch" xlink:label="loc_irdm_PurchaseObligationAmountForSingleLaunch_205" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_PurchaseObligationAmountForSingleLaunch_205" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ConstructionInProgressFundedByCreditFacility" xlink:label="loc_irdm_ConstructionInProgressFundedByCreditFacility_206" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_ConstructionInProgressFundedByCreditFacility_206" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CashRestrictedForDebtServiceReserveDecreases" xlink:label="loc_irdm_CashRestrictedForDebtServiceReserveDecreases_474" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_CashRestrictedForDebtServiceReserveDecreases_474" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InvoiceReceivedPaymentTermDescription" xlink:label="loc_irdm_InvoiceReceivedPaymentTermDescription_483" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_InvoiceReceivedPaymentTermDescription_483" use="optional" order="36" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityMinimumCashReserveRequiredPriorToExecutionOfSupplementalAgreement" xlink:label="loc_irdm_LineOfCreditFacilityMinimumCashReserveRequiredPriorToExecutionOfSupplementalAgreement_515" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_LineOfCreditFacilityMinimumCashReserveRequiredPriorToExecutionOfSupplementalAgreement_515" use="optional" order="37" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityDelayOfContributionsToDebtServiceReserveAccountDescription" xlink:label="loc_irdm_LineOfCreditFacilityDelayOfContributionsToDebtServiceReserveAccountDescription_543" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_LineOfCreditFacilityDelayOfContributionsToDebtServiceReserveAccountDescription_543" use="optional" order="38" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_LineOfCreditFacilityCommitmentFeePaidAmount" xlink:label="loc_irdm_LineOfCreditFacilityCommitmentFeePaidAmount_544" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_CommitmentsAndContingenciesLineItems_478" xlink:to="loc_irdm_LineOfCreditFacilityCommitmentFeePaidAmount_544" use="optional" order="39" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/StockbasedCompensationDetailsTextual">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_208" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_208" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_210" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" xlink:to="loc_us-gaap_AwardTypeAxis_210" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_210" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TwoThousandNineStockIncentivePlanMember" xlink:label="loc_irdm_TwoThousandNineStockIncentivePlanMember_212" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_irdm_TwoThousandNineStockIncentivePlanMember_212" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TwoThousandTwelveStockIncentivePlanMember" xlink:label="loc_irdm_TwoThousandTwelveStockIncentivePlanMember_213" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_irdm_TwoThousandTwelveStockIncentivePlanMember_213" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_214" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_us-gaap_EmployeeStockOptionMember_214" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_215" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_215" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ServiceBasedRsuMember" xlink:label="loc_irdm_ServiceBasedRsuMember_216" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_irdm_ServiceBasedRsuMember_216" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PerformanceBasedRsuMember" xlink:label="loc_irdm_PerformanceBasedRsuMember_217" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_irdm_PerformanceBasedRsuMember_217" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockAppreciationRightsSARSMember" xlink:label="loc_us-gaap_StockAppreciationRightsSARSMember_218" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_211" xlink:to="loc_us-gaap_StockAppreciationRightsSARSMember_218" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_219" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" xlink:to="loc_us-gaap_PlanNameAxis_219" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_220" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_219" xlink:to="loc_us-gaap_PlanNameDomain_220" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NewlyAuthorizedSharesMember" xlink:label="loc_irdm_NewlyAuthorizedSharesMember_221" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_NewlyAuthorizedSharesMember_221" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TwoThousandNineStockIncentivePlanAvailableMember" xlink:label="loc_irdm_TwoThousandNineStockIncentivePlanAvailableMember_222" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_TwoThousandNineStockIncentivePlanAvailableMember_222" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TwoThousandNineStockIncentivePlanOutstandingMember" xlink:label="loc_irdm_TwoThousandNineStockIncentivePlanOutstandingMember_223" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_TwoThousandNineStockIncentivePlanOutstandingMember_223" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AnnualCompensationPlan2012Member" xlink:label="loc_irdm_AnnualCompensationPlan2012Member_224" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_AnnualCompensationPlan2012Member_224" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NonEmployeeMember" xlink:label="loc_irdm_NonEmployeeMember_225" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_NonEmployeeMember_225" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_EmployeeMember" xlink:label="loc_irdm_EmployeeMember_226" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_EmployeeMember_226" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ConsultantMember" xlink:label="loc_irdm_ConsultantMember_227" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_ConsultantMember_227" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ExecutivesMember" xlink:label="loc_irdm_ExecutivesMember_514" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_220" xlink:to="loc_irdm_ExecutivesMember_514" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_228" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" xlink:to="loc_us-gaap_StatementClassOfStockAxis_228" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_229" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_228" xlink:to="loc_us-gaap_ClassOfStockDomain_229" use="optional" order="22" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember" xlink:label="loc_irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember_230" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_229" xlink:to="loc_irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember_230" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_209" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NumberOfSharesStockIncentivePlanNewlyAuthorized" xlink:label="loc_irdm_NumberOfSharesStockIncentivePlanNewlyAuthorized_232" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_NumberOfSharesStockIncentivePlanNewlyAuthorized_232" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_GrantDateFairValueOfStockOptions" xlink:label="loc_irdm_GrantDateFairValueOfStockOptions_233" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_GrantDateFairValueOfStockOptions_233" use="optional" order="26" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_GrantDateFairValueOfRestrictedStockUnits" xlink:label="loc_irdm_GrantDateFairValueOfRestrictedStockUnits_234" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_GrantDateFairValueOfRestrictedStockUnits_234" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_235" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_235" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_236" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_236" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMinimum" xlink:label="loc_irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMinimum_237" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMinimum_237" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMaximum" xlink:label="loc_irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMaximum_238" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockVestingRangeMaximum_238" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterTwoYears" xlink:label="loc_irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterTwoYears_239" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterTwoYears_239" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterThirdYear" xlink:label="loc_irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterThirdYear_240" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_PercentageOfRestrictedStockUnitsAwardsVestedAfterThirdYear_240" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_QuarterlyVestingPercentage" xlink:label="loc_irdm_QuarterlyVestingPercentage_241" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_QuarterlyVestingPercentage_241" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_FirstAnniversaryVestingPercentage" xlink:label="loc_irdm_FirstAnniversaryVestingPercentage_242" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_231" xlink:to="loc_irdm_FirstAnniversaryVestingPercentage_242" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/EquityTransactionsAndInstrumentsDetailsTextual">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_244" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_245" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_244" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_245" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_EquityTransactionsAxis" xlink:label="loc_irdm_EquityTransactionsAxis_246" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_irdm_EquityTransactionsAxis_246" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_EquityTransactionsDomain" xlink:label="loc_irdm_EquityTransactionsDomain_247" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_EquityTransactionsAxis_246" xlink:to="loc_irdm_EquityTransactionsDomain_247" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_TenderOfferWarrantExchangeMember" xlink:label="loc_irdm_TenderOfferWarrantExchangeMember_248" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_EquityTransactionsDomain_247" xlink:to="loc_irdm_TenderOfferWarrantExchangeMember_248" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PrivateWarrantExchangesMember" xlink:label="loc_irdm_PrivateWarrantExchangesMember_249" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_EquityTransactionsDomain_247" xlink:to="loc_irdm_PrivateWarrantExchangesMember_249" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PrivateOfferingMember" xlink:label="loc_irdm_PrivateOfferingMember_250" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_EquityTransactionsDomain_247" xlink:to="loc_irdm_PrivateOfferingMember_250" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_251" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_251" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_252" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_251" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_252" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_Warrants700Member" xlink:label="loc_irdm_Warrants700Member_253" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_252" xlink:to="loc_irdm_Warrants700Member_253" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_254" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_252" xlink:to="loc_us-gaap_ConvertiblePreferredStockMember_254" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_Warrants1150Member" xlink:label="loc_irdm_Warrants1150Member_255" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_252" xlink:to="loc_irdm_Warrants1150Member_255" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_256" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_us-gaap_StatementClassOfStockAxis_256" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_257" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_256" xlink:to="loc_us-gaap_ClassOfStockDomain_257" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_258" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_257" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_258" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember" xlink:label="loc_irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember_259" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_257" xlink:to="loc_irdm_SeriesACumulativeConvertiblePerpetualPreferredStockMember_259" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_485" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_257" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_485" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrantAxis" xlink:label="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrantAxis_260" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrantAxis_260" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyCasualtyInsuranceUnderwritersAffiliationWithRegistrantDomain" xlink:label="loc_us-gaap_PropertyCasualtyInsuranceUnderwritersAffiliationWithRegistrantDomain_500" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrantAxis_260" xlink:to="loc_us-gaap_PropertyCasualtyInsuranceUnderwritersAffiliationWithRegistrantDomain_500" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PublicOfferingMember" xlink:label="loc_irdm_PublicOfferingMember_501" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyCasualtyInsuranceUnderwritersAffiliationWithRegistrantDomain_500" xlink:to="loc_irdm_PublicOfferingMember_501" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_UnderwriterMember" xlink:label="loc_irdm_UnderwriterMember_502" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyCasualtyInsuranceUnderwritersAffiliationWithRegistrantDomain_500" xlink:to="loc_irdm_UnderwriterMember_502" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_499" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_499" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_504" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_499" xlink:to="loc_us-gaap_EquityComponentDomain_504" use="optional" order="22" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_505" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_504" xlink:to="loc_us-gaap_CommonStockMember_505" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="loc_us-gaap_ClassOfStockLineItems_503" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_245" xlink:to="loc_us-gaap_ClassOfStockLineItems_503" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_UnitsIssuedDuringPeriodOfInitialPublicOffering" xlink:label="loc_irdm_UnitsIssuedDuringPeriodOfInitialPublicOffering_261" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_UnitsIssuedDuringPeriodOfInitialPublicOffering_261" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PricePerUnitOfInitialPublicOffering" xlink:label="loc_irdm_PricePerUnitOfInitialPublicOffering_262" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PricePerUnitOfInitialPublicOffering_262" use="optional" order="26" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PricePerShareOfCommonStock" xlink:label="loc_irdm_PricePerShareOfCommonStock_263" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PricePerShareOfCommonStock_263" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PricePerShareOfWarrants" xlink:label="loc_irdm_PricePerShareOfWarrants_264" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PricePerShareOfWarrants_264" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SharesOfWarrantsExpire" xlink:label="loc_irdm_SharesOfWarrantsExpire_265" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_SharesOfWarrantsExpire_265" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_UnexercisedWarrantsPricePerShare" xlink:label="loc_irdm_UnexercisedWarrantsPricePerShare_266" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_UnexercisedWarrantsPricePerShare_266" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_RedemptionPricePerWarrant" xlink:label="loc_irdm_RedemptionPricePerWarrant_267" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_RedemptionPricePerWarrant_267" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InvestmentWarrantExpirationYear" xlink:label="loc_irdm_InvestmentWarrantExpirationYear_268" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_InvestmentWarrantExpirationYear_268" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NumberOfWarrantsExchangeForNewWarrants" xlink:label="loc_irdm_NumberOfWarrantsExchangeForNewWarrants_269" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_NumberOfWarrantsExchangeForNewWarrants_269" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommonStockRedemptionPriceDescription" xlink:label="loc_irdm_CommonStockRedemptionPriceDescription_270" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_CommonStockRedemptionPriceDescription_270" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_271" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_271" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ClassOfWarrantExercisePriceOfWarrants" xlink:label="loc_irdm_ClassOfWarrantExercisePriceOfWarrants_272" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_ClassOfWarrantExercisePriceOfWarrants_272" use="optional" order="36" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_273" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockSharesIssued_273" use="optional" order="37" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ConvertiblePerpetualPreferredDiscountOnIssueOfSharesIncludingOfferingCosts" xlink:label="loc_irdm_ConvertiblePerpetualPreferredDiscountOnIssueOfSharesIncludingOfferingCosts_274" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_ConvertiblePerpetualPreferredDiscountOnIssueOfSharesIncludingOfferingCosts_274" use="optional" order="38" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_275" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_275" use="optional" order="39" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockLiquidationPreference" xlink:label="loc_us-gaap_PreferredStockLiquidationPreference_276" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockLiquidationPreference_276" use="optional" order="40" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PreferredStockConversionRate" xlink:label="loc_irdm_PreferredStockConversionRate_277" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PreferredStockConversionRate_277" use="optional" order="41" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PreferredStockConvertibleConversionPrice" xlink:label="loc_irdm_PreferredStockConvertibleConversionPrice_278" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PreferredStockConvertibleConversionPrice_278" use="optional" order="42" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DividendsPayableCurrent" xlink:label="loc_us-gaap_DividendsPayableCurrent_279" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_DividendsPayableCurrent_279" use="optional" order="43" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_280" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_280" use="optional" order="44" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PreferredStockSharesAuthorizedUndesignatedAndUnissued" xlink:label="loc_irdm_PreferredStockSharesAuthorizedUndesignatedAndUnissued_281" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PreferredStockSharesAuthorizedUndesignatedAndUnissued_281" use="optional" order="45" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_AnnualCashDividendAmount" xlink:label="loc_irdm_AnnualCashDividendAmount_283" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_AnnualCashDividendAmount_283" use="optional" order="46" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_284" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockDividendRatePercentage_284" use="optional" order="47" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockDiscountOnShares" xlink:label="loc_us-gaap_PreferredStockDiscountOnShares_484" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockDiscountOnShares_484" use="optional" order="48" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PreferredStockPurchasePricePerShare" xlink:label="loc_irdm_PreferredStockPurchasePricePerShare_486" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PreferredStockPurchasePricePerShare_486" use="optional" order="49" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertiblePreferredStockTermsOfConversion" xlink:label="loc_us-gaap_ConvertiblePreferredStockTermsOfConversion_489" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_ConvertiblePreferredStockTermsOfConversion_489" use="optional" order="50" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_498" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_498" use="optional" order="51" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CommonStockPurchasePricePerShare" xlink:label="loc_irdm_CommonStockPurchasePricePerShare_531" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_CommonStockPurchasePricePerShare_531" use="optional" order="52" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PrivatePlacement" xlink:label="loc_irdm_PrivatePlacement_492" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PrivatePlacement_492" use="optional" order="53" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_StockPurchaseAgreementCommencingStartDate" xlink:label="loc_irdm_StockPurchaseAgreementCommencingStartDate_494" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_StockPurchaseAgreementCommencingStartDate_494" use="optional" order="54" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_StockPurchaseAgreementCommencingEndDate" xlink:label="loc_irdm_StockPurchaseAgreementCommencingEndDate_495" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_StockPurchaseAgreementCommencingEndDate_495" use="optional" order="55" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_StockPurchaseAgreementDescription" xlink:label="loc_irdm_StockPurchaseAgreementDescription_496" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_StockPurchaseAgreementDescription_496" use="optional" order="56" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_506" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_506" use="optional" order="57" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherUnderwritingExpense" xlink:label="loc_us-gaap_OtherUnderwritingExpense_507" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_OtherUnderwritingExpense_507" use="optional" order="58" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_ConvertiblePerpetualPreferredDiscountPerShareOnIssueOfShares" xlink:label="loc_irdm_ConvertiblePerpetualPreferredDiscountPerShareOnIssueOfShares_509" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_ConvertiblePerpetualPreferredDiscountPerShareOnIssueOfShares_509" use="optional" order="59" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockDividendRatePerDollarAmount" xlink:label="loc_us-gaap_PreferredStockDividendRatePerDollarAmount_532" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockDividendRatePerDollarAmount_532" use="optional" order="60" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_536" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_536" use="optional" order="61" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_537" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_537" use="optional" order="62" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_538" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_538" use="optional" order="63" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_PricePerShareOfPreferredStock" xlink:label="loc_irdm_PricePerShareOfPreferredStock_545" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_503" xlink:to="loc_irdm_PricePerShareOfPreferredStock_545" use="optional" order="64" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/NetIncomePerShareDetails">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_286" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_287" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_286" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_287" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_288" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_287" xlink:to="loc_us-gaap_StatementClassOfStockAxis_288" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_289" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_288" xlink:to="loc_us-gaap_ClassOfStockDomain_289" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_452" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_289" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_452" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_453" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_289" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_453" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareBasicLineItems" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_290" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_287" xlink:to="loc_us-gaap_EarningsPerShareBasicLineItems_290" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NumeratorAbstract" xlink:label="loc_irdm_NumeratorAbstract_291" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_290" xlink:to="loc_irdm_NumeratorAbstract_291" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_292" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_NumeratorAbstract_291" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_292" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_293" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_NumeratorAbstract_291" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_293" use="optional" order="9" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_NumeratorForBasicNetIncomeLossPerShare" xlink:label="loc_irdm_NumeratorForBasicNetIncomeLossPerShare_294" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_NumeratorAbstract_291" xlink:to="loc_irdm_NumeratorForBasicNetIncomeLossPerShare_294" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Dividends" xlink:label="loc_us-gaap_Dividends_295" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_NumeratorAbstract_291" xlink:to="loc_us-gaap_Dividends_295" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_296" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_NumeratorAbstract_291" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_296" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_DenominatorAbstract" xlink:label="loc_irdm_DenominatorAbstract_297" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_290" xlink:to="loc_irdm_DenominatorAbstract_297" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_298" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DenominatorAbstract_297" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_298" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_DilutiveEffectOfStockOptions" xlink:label="loc_irdm_DilutiveEffectOfStockOptions_534" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DenominatorAbstract_297" xlink:to="loc_irdm_DilutiveEffectOfStockOptions_534" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_299" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DenominatorAbstract_297" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_299" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_300" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DenominatorAbstract_297" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_300" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_301" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_DenominatorAbstract_297" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_301" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_302" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_290" xlink:to="loc_us-gaap_EarningsPerShareBasic_302" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/definitionGuidance" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_303" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_290" xlink:to="loc_us-gaap_EarningsPerShareDiluted_303" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/definitionGuidance" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/NetIncomePerShareDetailsTextual">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_305" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_305" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_307" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_307" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_308" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_307" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_308" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WarrantMember" xlink:label="loc_us-gaap_WarrantMember_309" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_308" xlink:to="loc_us-gaap_WarrantMember_309" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_310" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_308" xlink:to="loc_us-gaap_EmployeeStockOptionMember_310" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_311" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" xlink:to="loc_us-gaap_AwardTypeAxis_311" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_312" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_311" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_312" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_313" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_312" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_313" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_314" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" xlink:to="loc_us-gaap_StatementClassOfStockAxis_314" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_547" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_314" xlink:to="loc_us-gaap_ClassOfStockDomain_547" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_548" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_547" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_548" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_546" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_306" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_546" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_irdm_SecuritiesExcludedFromComputationOfEarningsPerShareAmount_315" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_546" xlink:to="loc_irdm_SecuritiesExcludedFromComputationOfEarningsPerShareAmount_315" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_316" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_546" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_316" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CondensedConsolidatedBalanceSheetsParenthetical">
    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_BalanceSheetParentheticalAbstract" xlink:label="loc_irdm_BalanceSheetParentheticalAbstract_318" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_319" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_BalanceSheetParentheticalAbstract_318" xlink:to="loc_us-gaap_StatementTable_319" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_320" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_319" xlink:to="loc_us-gaap_StatementClassOfStockAxis_320" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_321" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_320" xlink:to="loc_us-gaap_ClassOfStockDomain_321" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_441" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_321" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_441" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_442" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_321" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_442" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_322" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_319" xlink:to="loc_us-gaap_StatementLineItems_322" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_323" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_323" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_324" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_324" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_325" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_PreferredStockSharesIssued_325" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_326" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_326" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_327" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_327" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_328" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_328" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_329" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_CommonStockSharesIssued_329" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_330" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_322" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_330" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncome">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_341" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_342" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_341" xlink:to="loc_us-gaap_StatementTable_342" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_343" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_342" xlink:to="loc_us-gaap_StatementClassOfStockAxis_343" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_344" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_343" xlink:to="loc_us-gaap_ClassOfStockDomain_344" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_443" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_344" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_443" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_444" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_344" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_444" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_345" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_342" xlink:to="loc_us-gaap_StatementLineItems_345" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_346" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_RevenuesAbstract_346" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_347" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_346" xlink:to="loc_us-gaap_SalesRevenueServicesNet_347" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_348" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_346" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_348" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ContractsRevenue" xlink:label="loc_us-gaap_ContractsRevenue_349" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_346" xlink:to="loc_us-gaap_ContractsRevenue_349" use="optional" order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_350" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_346" xlink:to="loc_us-gaap_SalesRevenueNet_350" use="optional" order="11" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_351" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_OperatingExpensesAbstract_351" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostOfServices" xlink:label="loc_us-gaap_CostOfServices_352" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_CostOfServices_352" use="optional" order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_353" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_CostOfGoodsSold_353" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_354" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_354" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_355" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_355" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_356" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_356" use="optional" order="17" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_357" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_351" xlink:to="loc_us-gaap_OperatingExpenses_357" use="optional" order="18" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_358" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_OperatingIncomeLoss_358" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_360" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_360" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_361" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_361" use="optional" order="22" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_362" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_362" use="optional" order="23" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_363" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_359" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_363" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_364" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_364" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_365" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_365" use="optional" order="26" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_366" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_NetIncomeLoss_366" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="loc_us-gaap_DividendsPreferredStock_367" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_DividendsPreferredStock_367" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_368" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_368" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_369" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_369" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_370" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_370" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_371" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_EarningsPerShareBasic_371" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_372" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_EarningsPerShareDiluted_372" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_345" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_374" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" xlink:to="loc_us-gaap_NetIncomeLoss_374" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_375" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_375" use="optional" order="36" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_376" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_376" use="optional" order="37" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_377" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_373" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_377" use="optional" order="38" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CondensedConsolidatedStatementsOfCashFlows">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_379" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_380" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_379" xlink:to="loc_us-gaap_StatementTable_380" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_381" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_380" xlink:to="loc_us-gaap_StatementClassOfStockAxis_381" use="optional" order="2" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_382" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_381" xlink:to="loc_us-gaap_ClassOfStockDomain_382" use="optional" order="3" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_533" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_382" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_533" use="optional" order="4" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_446" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_382" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_446" use="optional" order="5" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_383" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_380" xlink:to="loc_us-gaap_StatementLineItems_383" use="optional" order="6" preferredLabel="http://www.xbrl.org/2003/role/label" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_384" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_384" use="optional" order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_385" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_384" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_385" use="optional" order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" use="optional" order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_387" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_387" use="optional" order="10" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_388" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" xlink:to="loc_us-gaap_PaymentsToAcquireMarketableSecurities_388" use="optional" order="11" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_389" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_389" use="optional" order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_390" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_390" use="optional" order="13" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_391" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_386" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_391" use="optional" order="14" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" use="optional" order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_393" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_393" use="optional" order="16" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_394" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_394" use="optional" order="17" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CashRestrictedForDebtServiceReserveIncreases" xlink:label="loc_irdm_CashRestrictedForDebtServiceReserveIncreases_395" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_irdm_CashRestrictedForDebtServiceReserveIncreases_395" use="optional" order="18" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CashRestrictedForDebtServiceReserveDecreases" xlink:label="loc_irdm_CashRestrictedForDebtServiceReserveDecreases_542" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_irdm_CashRestrictedForDebtServiceReserveDecreases_542" use="optional" order="19" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises_448" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises_448" use="optional" order="20" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_396" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_396" use="optional" order="21" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_397" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_397" use="optional" order="22" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="loc_us-gaap_PaymentsOfDividends_398" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_PaymentsOfDividends_398" use="optional" order="23" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_447" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_447" use="optional" order="24" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_445" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_445" use="optional" order="25" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_399" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_392" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_399" use="optional" order="26" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_400" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_400" use="optional" order="27" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_401" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_401" use="optional" order="28" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_402" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_402" use="optional" order="29" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_403" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_403" use="optional" order="30" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_449" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_403" xlink:to="loc_us-gaap_InterestPaidNet_449" use="optional" order="31" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_404" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_403" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_404" use="optional" order="32" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract" xlink:label="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" use="optional" order="33" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_406" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_406" use="optional" order="34" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_InterestCapitalizedButNotPaid" xlink:label="loc_irdm_InterestCapitalizedButNotPaid_407" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" xlink:to="loc_irdm_InterestCapitalizedButNotPaid_407" use="optional" order="35" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CapitalizedAmortizationOfDeferredFinancingCosts" xlink:label="loc_irdm_CapitalizedAmortizationOfDeferredFinancingCosts_408" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" xlink:to="loc_irdm_CapitalizedAmortizationOfDeferredFinancingCosts_408" use="optional" order="36" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_CapitalizedPaidinkindInterest" xlink:label="loc_irdm_CapitalizedPaidinkindInterest_450" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" xlink:to="loc_irdm_CapitalizedPaidinkindInterest_450" use="optional" order="37" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="irdm-20140630.xsd#irdm_StockBasedCompensationCapitalized" xlink:label="loc_irdm_StockBasedCompensationCapitalized_409" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_irdm_SupplementalDisclosureOfNonCashInvestingActivitiesAbstract_405" xlink:to="loc_irdm_StockBasedCompensationCapitalized_409" use="optional" order="38" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_410" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_383" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_410" use="optional" order="39" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_530" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_410" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_530" use="optional" order="40" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/BasisOfPresentationAndPrinciplesOfConsolidation">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_413" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_414" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_413" xlink:to="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_414" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/SignificantAccountingPolicies">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_416" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_SignificantAccountingPoliciesTextBlock_417" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_416" xlink:to="loc_us-gaap_SignificantAccountingPoliciesTextBlock_417" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/label" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CashAndCashEquivalentsRestrictedCashAndMarketableSecurities">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_419" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:label="loc_us-gaap_CashCashEquivalentsAndMarketableSecuritiesTextBlock_420" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_419" xlink:to="loc_us-gaap_CashCashEquivalentsAndMarketableSecuritiesTextBlock_420" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>

  <presentationLink xlink:type="extended" xlink:role="http://www.iridium.com/role/CommitmentsAndContingencies">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_422" />

    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_423" />

    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_422" xlink:to="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_423" use="optional" order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
  </presentationLink>
</linkbase>



