<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0000900973</cik>
        <entityName>Winslow Capital Management, LLC</entityName>
        <issuerAddress>
            <street1>4400 IDS CENTER</street1>
            <street2>80 SOUTH 8TH ST</street2>
            <city>MINNEAPOLIS</city>
            <stateOrCountry>MN</stateOrCountry>
            <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
            <zipCode>55402</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>6123769122</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>WINSLOW CAPITAL MANAGEMENT INC /MN</previousName>
        </edgarPreviousNameList>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>n/a</firstName>
                <lastName>Nuveen WCM Holdings, LLC</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>333 West Wacker Drive</street1>
                <city>Chicago</city>
                <stateOrCountry>IL</stateOrCountry>
                <stateOrCountryDescription>ILLINOIS</stateOrCountryDescription>
                <zipCode>60606</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Justin</firstName>
                <middleName>H.</middleName>
                <lastName>Kelly</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Winslow Capital Management, LLC</street1>
                <street2>4400 IDS Center, 80 South Eighth Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Executive Officer, Chief Investment Officer, Portfolio Manager</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Michael</firstName>
                <middleName>S.</middleName>
                <lastName>Palmer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Winslow Capital Management, LLC</street1>
                <street2>4400 IDS Center, 80 South Eighth Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>President</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <middleName>D.</middleName>
                <lastName>Wieneke</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Winslow Capital Management, LLC</street1>
                <street2>4400 IDS Center, 80 South Eighth Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Director, Chief Financial Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Laura</firstName>
                <middleName>J</middleName>
                <lastName>Hawkins</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Winslow Capital Management, LLC</street1>
                <street2>4400 IDS Center, 80 South Eighth Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>MANAGING DIRECTOR, CHIEF ADMINISTRATIVE OFFICER AND CHIEF RISK OFFICER</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Derek</firstName>
                <middleName>M</middleName>
                <lastName>Ciernia</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Winslow Capital Management, LLC</street1>
                <street2>4400 IDS Center, 80 South Eighth Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <stateOrCountryDescription>MINNESOTA</stateOrCountryDescription>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>MANAGING DIRECTOR, CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Banking and Financial Services</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001393725-19-000094</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2019-05-15</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Limited Liability Company interests in the form of &quot;Units&quot;</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>0</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse>Offering consists of the issuance and grant of certain Units, which represent a profits interest in the Issuer, which were granted without cash consideration.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>17</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Winslow Capital Management, LLC</issuerName>
                <signatureName>Derek Ciernia</signatureName>
                <nameOfSigner>Derek Ciernia</nameOfSigner>
                <signatureTitle>Managing Director, CCO and General Counsel</signatureTitle>
                <signatureDate>2020-05-14</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
