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    <schemaVersion>X0502</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

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        <cik>0001338613</cik>
        <entityName>Regency Energy Partners LP</entityName>
        <issuerAddress>
            <street1>2001 BRYAN STREET</street1>
            <street2>SUITE 3700</street2>
            <city>DALLAS</city>
            <stateOrCountry>TX</stateOrCountry>
            <zipCode>75201</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>214-750-1771</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2005</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>BYRON</firstName>
                <middleName>R.</middleName>
                <lastName>KELLEY</lastName>
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                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>PRESIDENT, CEO AND CHAIRMAN OF THE BOARD OF DIRECTORS OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>STEPHEN</firstName>
                <middleName>L.</middleName>
                <lastName>ARATA</lastName>
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                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
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            <relationshipClarification>EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>PAUL</firstName>
                <middleName>M.</middleName>
                <lastName>JOLAS</lastName>
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            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>EXECUTIVE VICE PRESIDENT, CHIEF LEGAL OFFICER AND SECRETARY OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>LAWRENCE</firstName>
                <middleName>B.</middleName>
                <lastName>CONNORS</lastName>
            </relatedPersonName>
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                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>SENIOR VICE PRESIDENT OF FINANCE AND CHIEF ACCOUNTING OFFICER OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>A.</firstName>
                <middleName>TROY</middleName>
                <lastName>STURROCK</lastName>
            </relatedPersonName>
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                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>EXECUTIVE VICE PRESIDENT, CONTROLLER OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>RAMON</firstName>
                <middleName></middleName>
                <lastName>SUAREZ, JR.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>VICE PRESIDENT, TREASURER OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>CHRISTOFER</firstName>
                <middleName>D.</middleName>
                <lastName>ROZZELL</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>SENIOR VICE PRESIDENT OF DEVELOPMENT &amp; STRATEGIC PLANNING OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MICHAEL</firstName>
                <middleName>J.</middleName>
                <lastName>BRADLEY</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>JAMES</firstName>
                <middleName>F.</middleName>
                <lastName>BURGOYNE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>DANIEL</firstName>
                <middleName>R.</middleName>
                <lastName>CASTAGNOLA</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>RODNEY</firstName>
                <middleName>L.</middleName>
                <lastName>GRAY</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>PAUL</firstName>
                <middleName>J.</middleName>
                <lastName>HALAS</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MARK</firstName>
                <middleName>T.</middleName>
                <lastName>MELLANA</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>JOHN</firstName>
                <middleName>T.</middleName>
                <lastName>MILLS</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>BRIAN</firstName>
                <middleName>P.</middleName>
                <lastName>WARD</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2001 BRYAN STREET</street1>
                <street2>SUITE 3700</street2>
                <city>DALLAS</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>75201</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>DIRECTOR OF REGENCY GP LLC</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Energy</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Over $100,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-09-02</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>4999999</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>MTP ENERGY INFRASTRUCTURE FINANCE MASTER FUND, LTD</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>1603 ORRINGTON AVENUE</street1>
                    <street2>13TH FLOOR</street2>
                    <city>EVANSTON</city>
                    <stateOrCountry>IL</stateOrCountry>
                    <zipCode>60201</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>IL</state>
                </statesOfSolicitationList>
            </recipient>
            <recipient>
                <recipientName>MTP ENERGY INFRASTRUCTURE FINANCE AP, LLC</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>1603 ORRINGTON AVENUE</street1>
                    <street2>13TH FLOOR</street2>
                    <city>EVANSTON</city>
                    <stateOrCountry>IL</stateOrCountry>
                    <zipCode>60201</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>IL</state>
                </statesOfSolicitationList>
            </recipient>
            <recipient>
                <recipientName>MTP ENERGY INFRASTRUCTURE FINANCE SPECIAL FUND, LLC</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>1603 ORRINGTON AVENUE</street1>
                    <street2>13TH FLOOR</street2>
                    <city>EVANSTON</city>
                    <stateOrCountry>IL</stateOrCountry>
                    <zipCode>60201</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>IL</state>
                </statesOfSolicitationList>
            </recipient>
            <recipient>
                <recipientName>TRIANGLE PEAK PARTNERS PRIVATE EQUITY, LP</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>P.O. BOX 3788</street1>
                    <street2></street2>
                    <city>CARMEL</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <zipCode>93921</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                </statesOfSolicitationList>
            </recipient>
            <recipient>
                <recipientName>HARVEST ENERGY INVESTORS, LLC</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>280 PARK AVENUE</street1>
                    <street2>25TH FLOOR</street2>
                    <city>NEW YORK</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <zipCode>10017</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>NY</state>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>80000023</totalOfferingAmount>
            <totalAmountSold>80000023</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>5</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>3200000</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse>THE ISSUER PAID A CLOSING FEE EQUAL TO 4% OF THE TOTAL OFFERING AMOUNT, CONSISTING OF AN ORIGINATION FEE AND REIMBURSEMENT OF TRANSACTION EXPENSES.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Regency Energy Partners LP</issuerName>
                <signatureName>/s/ Lawrence B. Connors</signatureName>
                <nameOfSigner>Lawrence B. Connors</nameOfSigner>
                <signatureTitle>Sr. VP of Finance and Chief Acctg Officer of Regency GP LLC</signatureTitle>
                <signatureDate>2009-09-10</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
