<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created with Toppan Merrill Bridge  9.6.7401.38943 -->
<!--Based on XBRL 2.1-->
<!--Created on: 8/7/2020 2:05:57 PM-->
<!--Modified on: 8/7/2020 2:05:57 PM-->
<schema xmlns:deprecated="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" xmlns:srt="http://fasb.org/srt/2019-01-31" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:currency="http://xbrl.sec.gov/currency/2019-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2019-01-31" xmlns:us-types="http://fasb.org/us-types/2019-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:exch="http://xbrl.sec.gov/exch/2019-01-31" xmlns:uso="http://www.unitedstatesoilfund.com/20200630" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.unitedstatesoilfund.com/20200630" elementFormDefault="qualified" xmlns:srt-types="http://fasb.org/srt-types/2019-01-31">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementsOfFinancialCondition" id="StatementCondensedStatementsOfFinancialCondition">
        <link:definition>00100 - Statement - Condensed Statements of Financial Condition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementsOfOperations" id="StatementCondensedStatementsOfOperations">
        <link:definition>00300 - Statement - Condensed Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementsOfCashFlows" id="StatementCondensedStatementsOfCashFlows">
        <link:definition>00500 - Statement - Condensed Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementsOfCashFlowsParenthetical" id="StatementCondensedStatementsOfCashFlowsParenthetical">
        <link:definition>00505 - Statement - Condensed Statements of Cash Flows (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>00090 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedScheduleOfInvestments" id="StatementCondensedScheduleOfInvestments">
        <link:definition>00200 - Statement - Condensed Schedule of Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedScheduleOfInvestmentsParenthetical" id="StatementCondensedScheduleOfInvestmentsParenthetical">
        <link:definition>00205 - Statement - Condensed Schedule of Investments (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementOfChangesInPartnersCapital" id="StatementCondensedStatementOfChangesInPartnersCapital">
        <link:definition>00400 - Statement - Condensed Statement of Changes in Partners' Capital</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementOfChangesInPartnersCapitalParenthetical" id="StatementCondensedStatementOfChangesInPartnersCapitalParenthetical">
        <link:definition>00405 - Statement - Condensed Statement of Changes in Partners' Capital) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureOrganizationAndBusinessDetails" id="DisclosureOrganizationAndBusinessDetails">
        <link:definition>40101 - Disclosure - ORGANIZATION AND BUSINESS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesDetails">
        <link:definition>40201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFeesPaidByFundAndRelatedPartyTransactionsDetails" id="DisclosureFeesPaidByFundAndRelatedPartyTransactionsDetails">
        <link:definition>40301 - Disclosure - FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureContractsAndAgreementsDetails" id="DisclosureContractsAndAgreementsDetails">
        <link:definition>40401 - Disclosure - CONTRACTS AND AGREEMENTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureContractsAndAgreementsBrokerageCommissionDetails" id="DisclosureContractsAndAgreementsBrokerageCommissionDetails">
        <link:definition>40402 - Disclosure - CONTRACTS AND AGREEMENTS -Brokerage Commission (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingenciesDetails" id="DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingenciesDetails">
        <link:definition>40501 - Disclosure - FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFinancialHighlightsDetails" id="DisclosureFinancialHighlightsDetails">
        <link:definition>40601 - Disclosure - FINANCIAL HIGHLIGHTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsValuationOfSecuritiesUsingFairValueHierarchyDetails" id="DisclosureFairValueOfFinancialInstrumentsValuationOfSecuritiesUsingFairValueHierarchyDetails">
        <link:definition>40701 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of Securities Using Fair Value Hierarchy (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsFairValueOfDerivativeInstrumentsDetails" id="DisclosureFairValueOfFinancialInstrumentsFairValueOfDerivativeInstrumentsDetails">
        <link:definition>40702 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value of Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsEffectOfDerivativeInstrumentsOnStatementsOfOperationsDetails" id="DisclosureFairValueOfFinancialInstrumentsEffectOfDerivativeInstrumentsOnStatementsOfOperationsDetails">
        <link:definition>40703 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Effect of Derivative Instruments on Statements of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/StatementCondensedStatementsOfFinancialConditionParenthetical" id="StatementCondensedStatementsOfFinancialConditionParenthetical">
        <link:definition>00105 - Statement - Condensed Statements of Financial Condition (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureOrganizationAndBusiness" id="DisclosureOrganizationAndBusiness">
        <link:definition>10101 - Disclosure - ORGANIZATION AND BUSINESS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureSummaryOfSignificantAccountingPolicies" id="DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>10201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFeesPaidByFundAndRelatedPartyTransactions" id="DisclosureFeesPaidByFundAndRelatedPartyTransactions">
        <link:definition>10301 - Disclosure - FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureContractsAndAgreements" id="DisclosureContractsAndAgreements">
        <link:definition>10401 - Disclosure - CONTRACTS AND AGREEMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingencies" id="DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingencies">
        <link:definition>10501 - Disclosure - FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFinancialHighlights" id="DisclosureFinancialHighlights">
        <link:definition>10601 - Disclosure - FINANCIAL HIGHLIGHTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFairValueOfFinancialInstruments" id="DisclosureFairValueOfFinancialInstruments">
        <link:definition>10701 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureRecentAccountingPronouncements" id="DisclosureRecentAccountingPronouncements">
        <link:definition>10801 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureSubsequentEvents" id="DisclosureSubsequentEvents">
        <link:definition>10901 - Disclosure - SUBSEQUENT EVENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>20202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureContractsAndAgreementsTables" id="DisclosureContractsAndAgreementsTables">
        <link:definition>30403 - Disclosure - CONTRACTS AND AGREEMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFinancialHighlightsTables" id="DisclosureFinancialHighlightsTables">
        <link:definition>30603 - Disclosure - FINANCIAL HIGHLIGHTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.unitedstatesoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsTables" id="DisclosureFairValueOfFinancialInstrumentsTables">
        <link:definition>30703 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="uso-20200630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="uso-20200630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="uso-20200630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="uso-20200630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <import namespace="http://fasb.org/us-roles/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd" />
  <import namespace="http://fasb.org/us-gaap/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd" />
  <import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <import namespace="http://fasb.org/srt-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd" />
  <element name="UnrealizedGainLossOnOpenCommodityFuturesContracts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_UnrealizedGainLossOnOpenCommodityFuturesContracts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="ReceivableForUnitsSold" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_ReceivableForUnitsSold" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="LiabilitiesAndPartnersCapitalAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_LiabilitiesAndPartnersCapitalAbstract" substitutionGroup="xbrli:item" />
  <element name="PayableForSharesRedeemed" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_PayableForSharesRedeemed" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <element name="LicenseFeesPayableCurrentAndNoncurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_LicenseFeesPayableCurrentAndNoncurrent" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <element id="uso_NetAssetValuePerUnit" name="NetAssetValuePerUnit" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element name="MarketValuePerUnit" type="num:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_MarketValuePerUnit" substitutionGroup="xbrli:item" />
  <element name="StatementScheduleOfInvestmentsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_StatementScheduleOfInvestmentsAbstract" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesFourteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesFourteenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesFifteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesFifteenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesSixteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesSixteenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesSeventeenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesSeventeenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesEighteenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesNineteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesNineteenMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesTwentyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesTwentyMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesTwentyOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesTwentyOneMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesTwentyTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesTwentyTwoMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesTwentyThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesTwentyThreeMember" substitutionGroup="xbrli:item" />
  <element name="UsTreasuryBillSecuritiesTwentyFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsTreasuryBillSecuritiesTwentyFourMember" substitutionGroup="xbrli:item" />
  <element name="OpenFuturesContractsLongMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_OpenFuturesContractsLongMember" substitutionGroup="xbrli:item" />
  <element name="PercentageOfPartnersCapital" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_PercentageOfPartnersCapital" substitutionGroup="xbrli:item" />
  <element name="CollateralAmountOnOpenFuturesContracts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_CollateralAmountOnOpenFuturesContracts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncomeAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_IncomeAbstract" substitutionGroup="xbrli:item" />
  <element name="GainLossOnCommodityFuturesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_GainLossOnCommodityFuturesAbstract" substitutionGroup="xbrli:item" />
  <element name="RegistrationFeesAndOtherOfferingExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_RegistrationFeesAndOtherOfferingExpenses" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="LicenseFeesAndOtherOfferingExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_LicenseFeesAndOtherOfferingExpenses" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncreaseDecreaseInOtherIncome" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseInOtherIncome" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncreaseDecreaseInPayablesDueToCustomers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseInPayablesDueToCustomers" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncreaseDecreaseManagementFeesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseManagementFeesPayable" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncreaseDecreaseInProfessionalFeesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseInProfessionalFeesPayable" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="IncreaseDecreaseInLicenseFeesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseInLicenseFeesPayable" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element name="PaymentsToPartnershipRedemption" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_PaymentsToPartnershipRedemption" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <element name="EquityInTradingAccountsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_EquityInTradingAccountsAbstract" substitutionGroup="xbrli:item" />
  <element name="CashAndCashEquivalentInEquityInTradingAccounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_CashAndCashEquivalentInEquityInTradingAccounts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element id="uso_FeesPaidByFundAndRelatedPartyTransactionsAbstract" name="FeesPaidByFundAndRelatedPartyTransactionsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element name="FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_FeesPaidAndRelatedPartyTransactionsDisclosureTextBlock" substitutionGroup="xbrli:item" />
  <element name="FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_FinancialInstrumentsOffBalanceSheetRisksAndContingenciesAbstract" substitutionGroup="xbrli:item" />
  <element name="FinancialHighlightsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_FinancialHighlightsAbstract" substitutionGroup="xbrli:item" />
  <element name="NetAssetValuePolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_NetAssetValuePolicyTextBlock" substitutionGroup="xbrli:item" />
  <element name="OtherOperatingIncomeExpensePolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_OtherOperatingIncomeExpensePolicyTextBlock" substitutionGroup="xbrli:item" />
  <element name="BrokerageCommissionsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_BrokerageCommissionsTableTextBlock" substitutionGroup="xbrli:item" />
  <element name="PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock" substitutionGroup="xbrli:item" />
  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" substitutionGroup="xbrldt:hypercubeItem" />
  <element name="RedemptionBasketsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_RedemptionBasketsMember" substitutionGroup="xbrli:item" />
  <element id="uso_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_FeePaidPerOrder" name="FeePaidPerOrder" nillable="true" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element name="UnitsIssuedDuringPeriodValueNewIssues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_UnitsIssuedDuringPeriodValueNewIssues" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <element name="NumberOfUnitPerBasket" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_NumberOfUnitPerBasket" substitutionGroup="xbrli:item" />
  <element name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_SignificantAccountingPoliciesTable" substitutionGroup="xbrldt:hypercubeItem" />
  <element id="uso_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element name="UsoAndRelatedPublicFundsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsoAndRelatedPublicFundsMember" substitutionGroup="xbrli:item" />
  <element name="UsoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_UsoMember" substitutionGroup="xbrli:item" />
  <element id="uso_FeesPaidAndRelatedPartyTransactionsLineItems" name="FeesPaidAndRelatedPartyTransactionsLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element name="BaseFeePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_BaseFeePercentage" substitutionGroup="xbrli:item" />
  <element name="CommissionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_CommissionMember" substitutionGroup="xbrli:item" />
  <element name="RebalancingInvestmentsTransactionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_RebalancingInvestmentsTransactionMember" substitutionGroup="xbrli:item" />
  <element name="TradesNecessitatedByCreationAndRedemptionActivityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_TradesNecessitatedByCreationAndRedemptionActivityMember" substitutionGroup="xbrli:item" />
  <element name="PercentageOfAverageDailyNetAssets" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_PercentageOfAverageDailyNetAssets" substitutionGroup="xbrli:item" />
  <element name="MarketingAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_MarketingAgreementMember" substitutionGroup="xbrli:item" />
  <element name="BrokerageAndFuturesCommissionMerchantAgreementsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_BrokerageAndFuturesCommissionMerchantAgreementsMember" substitutionGroup="xbrli:item" />
  <element name="GroupThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_GroupThreeMember" substitutionGroup="xbrli:item" />
  <element name="GroupFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_GroupFourMember" substitutionGroup="xbrli:item" />
  <element name="GroupFiveMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_GroupFiveMember" substitutionGroup="xbrli:item" />
  <element name="BasisAmountForFeePercentage" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="uso_BasisAmountForFeePercentage" substitutionGroup="xbrli:item" xbrli:balance="debit" />
  <element id="uso_CommissionsPaid" name="CommissionsPaid" nillable="true" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element name="RatioOfExpensesToAverageNetAssets" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_RatioOfExpensesToAverageNetAssets" substitutionGroup="xbrli:item" />
  <element name="TotalIncomeLossPerUnit" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_TotalIncomeLossPerUnit" substitutionGroup="xbrli:item" />
  <element name="TotalExpensesPerUnit" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_TotalExpensesPerUnit" substitutionGroup="xbrli:item" />
  <element name="IncreaseDecreaseInNetAssetValuePerUnit" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_IncreaseDecreaseInNetAssetValuePerUnit" substitutionGroup="xbrli:item" />
  <element id="uso_RateOfReturnOnAverageAsset" name="RateOfReturnOnAverageAsset" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element name="AverageNetAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_AverageNetAssetsAbstract" substitutionGroup="xbrli:item" />
  <element name="PercentageOfTotalRevenue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_PercentageOfTotalRevenue" substitutionGroup="xbrli:item" />
  <element name="ManagementIncentiveFeePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_ManagementIncentiveFeePercentage" substitutionGroup="xbrli:item" />
  <element name="ExpensesExcludingManagementFeePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_ExpensesExcludingManagementFeePercentage" substitutionGroup="xbrli:item" />
  <element name="PercentageOfConsolidatedNetIncomeLoss" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="uso_PercentageOfConsolidatedNetIncomeLoss" substitutionGroup="xbrli:item" />
  <element name="ClosedContractsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_ClosedContractsMember" substitutionGroup="xbrli:item" />
  <element name="OpenPositionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="uso_OpenPositionMember" substitutionGroup="xbrli:item" />
  <element id="uso_CashAndCashEquivalentsAtCarryingValueInEquityInTradingAccounts" name="CashAndCashEquivalentsAtCarryingValueInEquityInTradingAccounts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="uso_PercentageOfContractualObligationToPayFee" name="PercentageOfContractualObligationToPayFee" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="uso_UscfMember" name="UscfMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_IncreaseDecreaseInDirectorsFeesPayable" name="IncreaseDecreaseInDirectorsFeesPayable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="uso_GoldmanSachsFinancialSquareFundsGovernmentFundClassFsMember" name="GoldmanSachsFinancialSquareFundsGovernmentFundClassFsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_CreationBasketsMember" name="CreationBasketsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_FidelityInvestmentsMoneyMarketFundsGovernmentPortfolioMember" name="FidelityInvestmentsMoneyMarketFundsGovernmentPortfolioMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexwtiCrudeOilFuturesClMay2020ContractsExpiringApril2020Member" name="NymexwtiCrudeOilFuturesClMay2020ContractsExpiringApril2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_OpenCommodityFuturesContractsLongMember" name="OpenCommodityFuturesContractsLongMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesJuly2020ContractsExpiringAugust2020Member" name="NymexWtiCrudeOilFuturesJuly2020ContractsExpiringAugust2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesAugust2020ContractsExpiringSeptember2020Member" name="NymexWtiCrudeOilFuturesAugust2020ContractsExpiringSeptember2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesSeptember2020ContractsExpiringOctober2020Member" name="NymexWtiCrudeOilFuturesSeptember2020ContractsExpiringOctober2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesOctober2020ContractsExpiringNovember2020Member" name="NymexWtiCrudeOilFuturesOctober2020ContractsExpiringNovember2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesNovember2020ContractsExpiringDecember2020Member" name="NymexWtiCrudeOilFuturesNovember2020ContractsExpiringDecember2020Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesDecember2020ContractsExpiringJanuary2021Member" name="NymexWtiCrudeOilFuturesDecember2020ContractsExpiringJanuary2021Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NymexWtiCrudeOilFuturesMay2021ContractsExpiringJune2021Member" name="NymexWtiCrudeOilFuturesMay2021ContractsExpiringJune2021Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_RbcU.s.GovernmentMoneyMarketFundInstitutionalShareClass0.10Member" name="RbcU.s.GovernmentMoneyMarketFundInstitutionalShareClass0.10Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="uso_NumberOfSuccessiveValuationDays" name="NumberOfSuccessiveValuationDays" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="uso_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered" name="AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
</schema>
