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  <xs:element id="mar_ProceedsfromInsuranceRecoveries" abstract="false" name="ProceedsfromInsuranceRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="mar_OtherLongtermDebtMember" abstract="true" name="OtherLongtermDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <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_SeriesUNotesMember" abstract="true" name="SeriesUNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesDDNotesMember" abstract="true" name="SeriesDDNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_DebtInstrumentCovenantLeverageRatio" abstract="false" name="DebtInstrumentCovenantLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureTable" abstract="true" name="CommitmentsAndContingenciesDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="mar_ShareholderDerivativeComplaintsRelatedtoDataSecurityIncidentMember" abstract="true" name="ShareholderDerivativeComplaintsRelatedtoDataSecurityIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_RestructuringChargesAndBusinessCombinationAcquisitionAndIntegrationRelatedCosts" abstract="false" name="RestructuringChargesAndBusinessCombinationAcquisitionAndIntegrationRelatedCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="mar_SeriesHHNotesMember" abstract="true" name="SeriesHHNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesCCNotesMember" abstract="true" name="SeriesCCNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum: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_IncreaseDecreaseinContractwithCustomerLiabilityCash" abstract="false" name="IncreaseDecreaseinContractwithCustomerLiabilityCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <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_SheratonGrandChicagoHotelMember" abstract="true" name="SheratonGrandChicagoHotelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <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_LongtermCommercialPaperandLongtermLineofCredit" abstract="false" name="LongtermCommercialPaperandLongtermLineofCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_CommitmentsAndContingenciesDisclosureLineItems" abstract="true" name="CommitmentsAndContingenciesDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_DepreciationAmortizationAndOther" abstract="false" name="DepreciationAmortizationAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_BuildingandLandLeaseholdMember" abstract="true" name="BuildingandLandLeaseholdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_GuaranteeOperatingProfitMember" abstract="true" name="GuaranteeOperatingProfitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_RevenuesGrossofCapitalizedContractCostAmortization" abstract="false" name="RevenuesGrossofCapitalizedContractCostAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_SeriesRNotesMember" abstract="true" name="SeriesRNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesEENotesMember" abstract="true" name="SeriesEENotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_StockholdersEquityNoteLineItems" abstract="true" name="StockholdersEquityNoteLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mar_NoncashIncomeTaxExpense" abstract="false" name="NoncashIncomeTaxExpense" 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_SeriesAANotesMember" abstract="true" name="SeriesAANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_ReimbursementsMember" abstract="true" name="ReimbursementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum: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_DebtInstrumentNumberOfAmendments" abstract="false" name="DebtInstrumentNumberOfAmendments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mar_FinanceLeaseLiabilityToBePaidDueAfterYearFour" abstract="false" name="FinanceLeaseLiabilityToBePaidDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_GuarantorObligationsMaximumExposureUndiscountedNotYetinEffect" abstract="false" name="GuarantorObligationsMaximumExposureUndiscountedNotYetinEffect" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_OwnedLeasedandOtherMember" abstract="true" name="OwnedLeasedandOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesPSeniorNotesMember" abstract="true" name="SeriesPSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesBBNotesMember" abstract="true" name="SeriesBBNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesXNotesMember" abstract="true" name="SeriesXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_InternationalSegmentMember" abstract="true" name="InternationalSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesZNotesMember" abstract="true" name="SeriesZNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_ClassActionLawsuitsRelatedToDataSecurityIncidentMember" abstract="true" name="ClassActionLawsuitsRelatedToDataSecurityIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_RestructuringChargesAndBusinessCombinationAcquisitionAndIntegrationRelatedCostsMember" abstract="true" name="RestructuringChargesAndBusinessCombinationAcquisitionAndIntegrationRelatedCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum: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_LoyaltyProgramMember" abstract="true" name="LoyaltyProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_USAndCanadaSegmentMember" abstract="true" name="USAndCanadaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_AbovePropertyAndPropertyLevelMember" abstract="true" name="AbovePropertyAndPropertyLevelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_PropertyLevelAndOwnedAndLeasedPropertiesMember" abstract="true" name="PropertyLevelAndOwnedAndLeasedPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesLSeniorNotesMember" abstract="true" name="SeriesLSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesFFNotesMember" abstract="true" name="SeriesFFNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_FeeServiceMember" abstract="true" name="FeeServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_DepreciationAmortizationandOtherExcludingCapitalizedContractCostAmortization" abstract="false" name="DepreciationAmortizationandOtherExcludingCapitalizedContractCostAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mar_DataSecurityIncidentMember" abstract="true" name="DataSecurityIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_SeriesWNotesMember" abstract="true" name="SeriesWNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="mar_ContractAcquisitionCostsAndOtherMember" abstract="true" name="ContractAcquisitionCostsAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
</xs:schema>
