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

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0002115100</cik>
        <entityName>ADF3 (Feeder) L.P.</entityName>
        <issuerAddress>
            <street1>Royal Bank Place, 3rd Floor</street1>
            <street2>1 Glategny Esplanade</street2>
            <city>St Peter Port</city>
            <stateOrCountry>Y7</stateOrCountry>
            <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
            <zipCode>GY1 2HJ</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>44 1481 810 000</issuerPhoneNumber>
        <jurisdictionOfInc>GUERNSEY</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2025</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>Apax Digital III GP L.P. Inc.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Royal Bank Place, 3rd Floor</street1>
                <street2>1 Glategny Esplanade</street2>
                <city>St Peter Port</city>
                <stateOrCountry>Y7</stateOrCountry>
                <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
                <zipCode>GY1 2HJ</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>The General Partner of the Issuer (the &quot;GP&quot;)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>Apax Digital III GP Co. Limited</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Royal Bank Place, 3rd Floor</street1>
                <street2>1 Glategny Esplanade</street2>
                <city>St Peter Port</city>
                <stateOrCountry>Y7</stateOrCountry>
                <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
                <zipCode>GY1 2HJ</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>The General Partner of the GP</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Mark</firstName>
                <middleName>John</middleName>
                <lastName>Despres</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Royal Bank Place, 3rd Floor</street1>
                <street2>1 Glategny Esplanade</street2>
                <city>St Peter Port</city>
                <stateOrCountry>Y7</stateOrCountry>
                <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
                <zipCode>GY1 2HJ</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Director of the GP</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Simon</firstName>
                <middleName>Keith</middleName>
                <lastName>March</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Royal Bank Place, 3rd Floor</street1>
                <street2>1 Glategny Esplanade</street2>
                <city>St Peter Port</city>
                <stateOrCountry>Y7</stateOrCountry>
                <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
                <zipCode>GY1 2HJ</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Corporate Secretary of the GP</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeremy</firstName>
                <middleName>Roster</middleName>
                <lastName>Latham</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Royal Bank Place, 3rd Floor</street1>
                <street2>1 Glategny Esplanade</street2>
                <city>St Peter Port</city>
                <stateOrCountry>Y7</stateOrCountry>
                <stateOrCountryDescription>GUERNSEY</stateOrCountryDescription>
                <zipCode>GY1 2HJ</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Director of the GP</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Private Equity Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.1</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <yetToOccur>true</yetToOccur>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>0</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>0</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>ADF3 (Feeder) L.P.</issuerName>
                <signatureName>/s/ Jeremy Roster Latham</signatureName>
                <nameOfSigner>Jeremy Roster Latham</nameOfSigner>
                <signatureTitle>Director of the GP</signatureTitle>
                <signatureDate>2026-04-08</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
