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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000919574-10-003736.txt : 20100526
<SEC-HEADER>0000919574-10-003736.hdr.sgml : 20100526
<ACCEPTANCE-DATETIME>20100526101022
ACCESSION NUMBER:		0000919574-10-003736
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(1)
FILED AS OF DATE:		20100526
DATE AS OF CHANGE:		20100526
EFFECTIVENESS DATE:		20100526

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GRT CONCENTRIC PARTNERS, L.P.
		CENTRAL INDEX KEY:			0001349500
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-84870
		FILM NUMBER:		10858542

	BUSINESS ADDRESS:	
		STREET 1:		50 MILK STREET
		STREET 2:		21ST FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		617-348-2848

	MAIL ADDRESS:	
		STREET 1:		50 MILK STREET
		STREET 2:		21ST FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GRT Concentric Partners, L.P.
		DATE OF NAME CHANGE:	20090505

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Concentric Partners LP
		DATE OF NAME CHANGE:	20060112
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001349500</cik>
        <entityName>GRT CONCENTRIC PARTNERS, L.P.</entityName>
        <issuerAddress>
            <street1>50 MILK STREET</street1>
            <street2>21ST FLOOR</street2>
            <city>BOSTON</city>
            <stateOrCountry>MA</stateOrCountry>
            <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
            <zipCode>02109</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>617-226-1700</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>Concentric Partners, L.P.</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>GRT Concentric Partners, L.P.</previousName>
            <previousName>Concentric Partners LP</previousName>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Timothy</firstName>
                <middleName>A.</middleName>
                <lastName>Krochuk</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>50 Milk Street</street1>
                <street2>21st Floor</street2>
                <city>Boston</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>02109</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Timothy A. Krochuk is an executive officer of GRT Concentric GP, L.L.C., the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gregory</firstName>
                <lastName>Fraser</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>50 Milk Street</street1>
                <street2>21st Floor</street2>
                <city>Boston</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>02109</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Gregory Fraser is an executive officer of GRT Concentric GP, L.L.C., the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Rudolph</firstName>
                <middleName>K.</middleName>
                <lastName>Kluiber</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>50 Milk Street</street1>
                <street2>21st Floor</street2>
                <city>Boston</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>02109</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Rudolph K. Kluiber is an executive officer of GRT Concentric GP, L.L.C., 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>06</item>
            <item>3C</item>
            <item>3C.1</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0000919574-09-010903</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2004-10-04</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>1000000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>3809860</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>8</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <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>GRT CONCENTRIC PARTNERS, L.P.</issuerName>
                <signatureName>/s/ Timothy A. Krochuk</signatureName>
                <nameOfSigner>Timothy A. Krochuk</nameOfSigner>
                <signatureTitle>Executive Officer of General Partner</signatureTitle>
                <signatureDate>2010-05-25</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
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</TEXT>
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</SEC-DOCUMENT>
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