<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:181c7629-5ef6-4f45-a4ac-40dc121e5950,g:955c0c25-c974-4433-b8aa-e92de77a05a6-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember_label_en-US" xlink:label="lab_crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value at Fiscal Year-End of Outstanding and Unvested Option Awards and Stock Awards Granted in Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:href="crto-20260428.xsd#crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:to="lab_crto_FairValueAtFiscalYearEndOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_MeganClarkenMember_label_en-US" xlink:label="lab_crto_MeganClarkenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Megan Clarken [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_MeganClarkenMember" xlink:href="crto-20260428.xsd#crto_MeganClarkenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_MeganClarkenMember" xlink:to="lab_crto_MeganClarkenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember_label_en-US" xlink:label="lab_crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Grant Date Fair Value of Option Awards and Stock Awards Granted in Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:href="crto-20260428.xsd#crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:to="lab_crto_GrantDateFairValueOfOptionAwardsAndStockAwardsGrantedInFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember_label_en-US" xlink:label="lab_crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value or Total Compensation [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember" xlink:href="crto-20260428.xsd#crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember" xlink:to="lab_crto_ValueOfDividendsOrOtherEarningsPaidOnStockOrOptionAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_MichaelKomasinskiMember_label_en-US" xlink:label="lab_crto_MichaelKomasinskiMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Michael Komasinski [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_MichaelKomasinskiMember" xlink:href="crto-20260428.xsd#crto_MichaelKomasinskiMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_MichaelKomasinskiMember" xlink:to="lab_crto_MichaelKomasinskiMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember_label_en-US" xlink:label="lab_crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Fair Value as of Vesting Date of Option Awards and Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" xlink:href="crto-20260428.xsd#crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" xlink:to="lab_crto_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember_label_en-US" xlink:label="lab_crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value at Vesting of Option Awards and Stock Awards Granted in Fiscal Year That Vested During Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember" xlink:href="crto-20260428.xsd#crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember" xlink:to="lab_crto_FairValueAtVestingOfOptionAwardsAndStockAwardsGrantedInFiscalYearThatVestedDuringFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember_label_en-US" xlink:label="lab_crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Fair Value of Outstanding and Unvested Option Awards and Stock Awards Granted in Prior Fiscal Years [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember" xlink:href="crto-20260428.xsd#crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember" xlink:to="lab_crto_ChangeInFairValueOfOutstandingAndUnvestedOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember_label_en-US" xlink:label="lab_crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value as of Prior Fiscal Year-End of Option Awards and Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember" xlink:href="crto-20260428.xsd#crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember" xlink:to="lab_crto_FairValueAsOfPriorFiscalYearEndOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsThatFailedToMeetApplicableVestingConditionsDuringFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember_label_en-US" xlink:label="lab_crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Pension Value and Above Market Non-Qualified Deferred Compensation [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember" xlink:href="crto-20260428.xsd#crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember" xlink:to="lab_crto_ChangeInPensionValueAndAboveMarketNonQualifiedDeferredCompensationMember" xlink:type="arc" order="1"/>
  </link:labelLink>
</link:linkbase>
