-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001466232-09-000001.txt : 20090616
<SEC-HEADER>0001466232-09-000001.hdr.sgml : 20090616
<ACCEPTANCE-DATETIME>20090616141104
ACCESSION NUMBER:		0001466232-09-000001
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(7)
FILED AS OF DATE:		20090616
DATE AS OF CHANGE:		20090616
EFFECTIVENESS DATE:		20090616

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Oak Investment Partners XIII, Limited Partnership
		CENTRAL INDEX KEY:			0001466232
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-132009
		FILM NUMBER:		09893818

	BUSINESS ADDRESS:	
		STREET 1:		ONE GORHAM ISLAND
		CITY:			WESTPORT
		STATE:			CT
		ZIP:			06880
		BUSINESS PHONE:		203-226-8346

	MAIL ADDRESS:	
		STREET 1:		ONE GORHAM ISLAND
		CITY:			WESTPORT
		STATE:			CT
		ZIP:			06880
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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<edgarSubmission>

    <schemaVersion>X0401</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001466232</cik>
        <entityName>Oak Investment Partners XIII, Limited Partnership</entityName>
        <issuerAddress>
            <street1>ONE GORHAM ISLAND</street1>
            <street2></street2>
            <city>WESTPORT</city>
            <stateOrCountry>CT</stateOrCountry>
            <zipCode>06880</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>203-226-8346</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <yetToBeFormed>true</yetToBeFormed>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Edward</firstName>
                <middleName>F</middleName>
                <lastName>Glassmeyer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>One Gorham Island</street1>
                <street2></street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Executive Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bandel</firstName>
                <middleName>L.</middleName>
                <lastName>Carano</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>525 University Avenue</street1>
                <street2>Suite 1300</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94301</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Executive Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Fredric</firstName>
                <middleName>W.</middleName>
                <lastName>Harman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>525 University Avenue</street1>
                <street2>Suite 1300</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94301</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Executive Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ann</firstName>
                <middleName>Huntress</middleName>
                <lastName>Lamont</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>One Gorham Island</street1>
                <street2></street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Executive Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Andrew</firstName>
                <middleName>W.</middleName>
                <lastName>Adams</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>One Gorham Island</street1>
                <street2></street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Iftikar</firstName>
                <middleName>A.</middleName>
                <lastName>Ahmed</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>One Gorham Island</street1>
                <street2></street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Grace</firstName>
                <middleName>A.</middleName>
                <lastName>Ames</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>One Gorham Island</street1>
                <street2></street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gerald</firstName>
                <middleName>R.</middleName>
                <lastName>Gallagher</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>4550 Wells Fargo Center</street1>
                <street2>90 South Seventh Street</street2>
                <city>Minneapolis</city>
                <stateOrCountry>MN</stateOrCountry>
                <zipCode>55402</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Warren</firstName>
                <middleName>B.</middleName>
                <lastName>Riley</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>525 University Avenue</street1>
                <street2>Suite 1300</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94301</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of Oak Associates XIII, LLC, General Partner</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Other Investment Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Decline to Disclose</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <yetToOccur>true</yetToOccur>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1500000000</totalOfferingAmount>
            <totalAmountSold>0</totalAmountSold>
            <totalRemaining>1500000000</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>Oak Investment Partners XIII, Limited Partnership</issuerName>
                <signatureName>/s/ Grace A. Ames</signatureName>
                <nameOfSigner>Grace A. Ames</nameOfSigner>
                <signatureTitle>Managing Member of Oak Associates XIII, LLC, the GP</signatureTitle>
                <signatureDate>2009-06-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----