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  <xs:element id="mar_IncreaseDecreaseInCapitalizedContractCostsNet" abstract="false" name="IncreaseDecreaseInCapitalizedContractCostsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_NoncashRestructuringAndMergerRelatedCosts" abstract="false" name="NoncashRestructuringAndMergerRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_IncreaseDecreaseInWorkingCapital" abstract="false" name="IncreaseDecreaseInWorkingCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_PaymentsForAssetAcquisitions" abstract="false" name="PaymentsForAssetAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_PaymentsForLoanAdvances" abstract="false" name="PaymentsForLoanAdvances" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_ProceedsFromRepaymentsOfCommercialPaperAndLongTermLinesOfCredit" abstract="false" name="ProceedsFromRepaymentsOfCommercialPaperAndLongTermLinesOfCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_DepreciationAndAmortizationReclassified" abstract="false" name="DepreciationAndAmortizationReclassified" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_CitizenMBrandMember" abstract="true" name="CitizenMBrandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_AssetAcquisitionContingentConsiderationRangeOfOutcomesMaximum" abstract="false" name="AssetAcquisitionContingentConsiderationRangeOfOutcomesMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_AssetAcquisitionNumberOfHotelsTbBeAddedToPortfolios" abstract="false" name="AssetAcquisitionNumberOfHotelsTbBeAddedToPortfolios" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mar_AssetAcquisitionNumberOfHotelRoomsToBeAddedToPortfolios" abstract="false" name="AssetAcquisitionNumberOfHotelRoomsToBeAddedToPortfolios" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mar_PerformanceBasedRestrictedStockUnitsRSUsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_ShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized" abstract="false" name="ShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureTable" abstract="true" name="CommitmentsAndContingenciesDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_GuaranteeOperatingProfitMember" abstract="true" name="GuaranteeOperatingProfitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_LossContingenciesBySecondaryNatureOfContingencyAxis" abstract="true" name="LossContingenciesBySecondaryNatureOfContingencyAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_LossContingenciesBySecondaryNatureOfContingencyDomain" abstract="true" name="LossContingenciesBySecondaryNatureOfContingencyDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_NotYetInEffectConditionMember" abstract="true" name="NotYetInEffectConditionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureLineItems" abstract="true" name="CommitmentsAndContingenciesDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_ClassActionLawsuitsRelatedToDataSecurityIncidentMember" abstract="true" name="ClassActionLawsuitsRelatedToDataSecurityIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesPSeniorNotesMember" abstract="true" name="SeriesPSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesRNotesMember" abstract="true" name="SeriesRNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesVNotesMember" abstract="true" name="SeriesVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="mar_SeriesAANotesMember" abstract="true" name="SeriesAANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesEENotesMember" abstract="true" name="SeriesEENotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesFFNotesMember" abstract="true" name="SeriesFFNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesGGNotesMember" abstract="true" name="SeriesGGNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesHHNotesMember" abstract="true" name="SeriesHHNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesIINotesMember" abstract="true" name="SeriesIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesJJNotesMember" abstract="true" name="SeriesJJNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesKKNotesMember" abstract="true" name="SeriesKKNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesLLNotesMember" abstract="true" name="SeriesLLNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesMMNotesMember" abstract="true" name="SeriesMMNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesNNNotesMember" abstract="true" name="SeriesNNNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesOONotesMember" abstract="true" name="SeriesOONotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesPPNotesMember" abstract="true" name="SeriesPPNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesQQNotesMember" abstract="true" name="SeriesQQNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_SeriesRRNotesMember" abstract="true" name="SeriesRRNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="mar_SeriesVVNotesMember" abstract="true" name="SeriesVVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="mar_SeriesRRAndSSNotesMember" abstract="true" name="SeriesRRAndSSNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_FinancialInstrumentsAssetsNoncurrent" abstract="false" name="FinancialInstrumentsAssetsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_FinancialInstrumentsLiabilitiesNoncurrent" abstract="false" name="FinancialInstrumentsLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_AccumulatedGainLossOtherAdjustmentsAttributableToParentMember" abstract="true" name="AccumulatedGainLossOtherAdjustmentsAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAndTranslationGainLossBeforeReclassificationAndTaxIntraEntityForeignCurrencyTransactionsLongTermInvestmentNature" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_StockholdersEquityNoteTable" abstract="true" name="StockholdersEquityNoteTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_StockholdersEquityNoteLineItems" abstract="true" name="StockholdersEquityNoteLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_SharesIssuedShareBasedCompensationPlanAfterForfeiture" abstract="false" name="SharesIssuedShareBasedCompensationPlanAfterForfeiture" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mar_USAndCanadaSegmentMember" abstract="true" name="USAndCanadaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_EMEASegmentMember" abstract="true" name="EMEASegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_GreaterChinaMember" abstract="true" name="GreaterChinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_APECMember" abstract="true" name="APECMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mar_IncomeLossBeforeInterestExpenseAndTaxes" abstract="false" name="IncomeLossBeforeInterestExpenseAndTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
