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    <primaryIssuer>
        <cik>0001401283</cik>
        <entityName>AQR GLOBAL ASSET ALLOCATION INSTITUTIONAL FUND IV LP</entityName>
        <issuerAddress>
            <street1>C/O AQR CAPITAL MANAGEMENT, LLC</street1>
            <street2>TWO GREENWICH PLAZA, 3RD FL</street2>
            <city>GREENWICH</city>
            <stateOrCountry>CT</stateOrCountry>
            <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
            <zipCode>06830</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>203-742-3600</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
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        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
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            <relatedPersonName>
                <firstName>Bradley</firstName>
                <middleName>D</middleName>
                <lastName>Asness</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Bradley Asness is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
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            <relatedPersonName>
                <firstName>Clifford</firstName>
                <middleName>S</middleName>
                <lastName>Asness</lastName>
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                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Clifford Asness is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jacques</firstName>
                <middleName>A</middleName>
                <lastName>Friedman</lastName>
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                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Jacques Friedman is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Brian</firstName>
                <middleName>K</middleName>
                <lastName>Hurst</lastName>
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                <street2>Two Greenwich Plaza</street2>
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                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Brian Hurst is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ronen</firstName>
                <lastName>Israel</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Ronen Israel is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName>G</middleName>
                <lastName>Kabiller</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>David Kabiller is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Oktay</firstName>
                <lastName>Kurbanov</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Oktay Kurbanov is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <middleName>M</middleName>
                <lastName>Liew</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>John Liew is an executive officer of AQR Capital Management, LLC, the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Michael</firstName>
                <middleName>A</middleName>
                <lastName>Mendelson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Michael Mendelson is an executive officer of AQR Capital Management II, LLC, the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Lars</firstName>
                <middleName>N</middleName>
                <lastName>Nielsen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Lars Nielsen is an executive officer of AQR Capital Management II, LLC, the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Lasse</firstName>
                <lastName>Pedersen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Lasse Pedersen is an executive officer of AQR Capital Management II, LLC, the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Yao Hua</firstName>
                <lastName>Ooi</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o AQR Capital Management, LLC</street1>
                <street2>Two Greenwich Plaza</street2>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
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            <relationshipClarification>Yao Hua Ooi is an executive officer of AQR Capital Management II, LLC, the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Management, LLC</firstName>
                <lastName>AQR Capital</lastName>
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            <relatedPersonAddress>
                <street1>Two Greenwich Plaza</street1>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
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            <relationshipClarification>AQR Capital Management, LLC, is the Investment Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Management II, LLC</firstName>
                <lastName>AQR Capital</lastName>
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                <street1>Two Greenwich Plaza</street1>
                <city>Greenwich</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06830</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>AQR Capital Management II, LLC, is the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Decline to Disclose</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001182218-14-000002</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2006-06-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>5000000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>265525983</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>9</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
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        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>The General Partner (or its affiliate) is entitled to receive an annual management fee in an amount equal to a specified percentage of assets under management.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>AQR GLOBAL ASSET ALLOCATION INSTITUTIONAL FUND IV LP</issuerName>
                <signatureName>Bradley D. Asness</signatureName>
                <nameOfSigner>Bradley D. Asness</nameOfSigner>
                <signatureTitle>Principal &amp; Chief Legal Officer</signatureTitle>
                <signatureDate>2015-12-07</signatureDate>
            </signature>
        </signatureBlock>
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