<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema targetNamespace="http://www.fidelity.com/20250714" elementFormDefault="qualified" xmlns:dei="http://xbrl.sec.gov/dei/2024" xmlns:oef="http://xbrl.sec.gov/oef/2024q3" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:fmr="http://www.fidelity.com/20250714" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink">
    <xs:annotation>
        <xs:appinfo>
            <link:linkbaseRef xlink:type="simple" xlink:href="fmr-20250714_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links"/>
            <link:linkbaseRef xlink:type="simple" xlink:href="fmr-20250714_def.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links"/>
            <link:linkbaseRef xlink:type="simple" xlink:href="fmr-20250714_lab.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links"/>
            <link:linkbaseRef xlink:type="simple" xlink:href="fmr-20250714_cal.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links"/>
            <link:roleType roleURI="http://www.fidelity.com/role/DocumentInformation" id="role_DocumentInformation">
                <link:definition>000000 - Document - Document and Entity Information</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/RiskSummaryS000093536_FidelityFlexInternationalFocusedIndexFund-PRO" id="role_RiskSummaryS000093536_FidelityFlexInternationalFocusedIndexFund-PRO">
                <link:definition>000001 - Document - Risk/Return Summary - FidelityFlexInternationalFocusedIndexFund-PRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/DisclosureDetailS000093536_FidelityFlexInternationalFocusedIndexFund-PRO" id="role_DisclosureDetailS000093536_FidelityFlexInternationalFocusedIndexFund-PRO">
                <link:definition>000002 - Disclosure - Risk/Return Detail Data - FidelityFlexInternationalFocusedIndexFund-PRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/RiskSummaryS000093537_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO" id="role_RiskSummaryS000093537_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO">
                <link:definition>000003 - Document - Risk/Return Summary - FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/DisclosureDetailS000093537_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO" id="role_DisclosureDetailS000093537_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO">
                <link:definition>000004 - Disclosure - Risk/Return Detail Data - FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/RiskSummaryS000093538_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO" id="role_RiskSummaryS000093538_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO">
                <link:definition>000005 - Document - Risk/Return Summary - FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.fidelity.com/role/DisclosureDetailS000093538_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO" id="role_DisclosureDetailS000093538_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO">
                <link:definition>000006 - Disclosure - Risk/Return Detail Data - FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPRO</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
            </link:roleType>
        </xs:appinfo>
    </xs:annotation>
    <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
    <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
    <xs:import namespace="http://xbrl.sec.gov/oef/2024q3" schemaLocation="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd"/>
    <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
    <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="FidelityFlexInternationalFocusedIndexFund-PROMember" id="fmr_FidelityFlexInternationalFocusedIndexFund-PROMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPROMember" id="fmr_FidelityFlexMidCapFocusedandFlexSmallCapFocusedIndexFunds-ComboPROMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="S000093535Member" id="fmr_S000093535Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="S000093536Member" id="fmr_S000093536Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="S000093537Member" id="fmr_S000093537Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="S000093538Member" id="fmr_S000093538Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="S000056358Member" id="fmr_S000056358Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="C000261866Member" id="fmr_C000261866Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="C000261867Member" id="fmr_C000261867Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="C000261868Member" id="fmr_C000261868Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="C000261869Member" id="fmr_C000261869Member" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="ForeignAndEmergingMarketsRiskMember" id="fmr_ForeignAndEmergingMarketsRiskMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="SecuritiesLendingRiskMember" id="fmr_SecuritiesLendingRiskMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="IssuerSpecificChangesMember" id="fmr_IssuerSpecificChangesMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="StockMarketVolatilityMember" id="fmr_StockMarketVolatilityMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="PassiveManagementRiskMember" id="fmr_PassiveManagementRiskMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="MidCapInvestingMember" id="fmr_MidCapInvestingMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="SmallCapInvestingMember" id="fmr_SmallCapInvestingMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="GeographicExposureToEuropeMember" id="fmr_GeographicExposureToEuropeMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="RulesBasedStrategyRiskMember" id="fmr_RulesBasedStrategyRiskMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="CorrelationToIndexMember" id="fmr_CorrelationToIndexMember" xbrli:periodType="duration" xmlns=""/>
    <xs:element type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" name="GeographicExposureToAsiaMember" id="fmr_GeographicExposureToAsiaMember" xbrli:periodType="duration" xmlns=""/>
</xs:schema>
