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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-09-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001286131</issuerCik>
        <issuerName>STONEMOR PARTNERS LP</issuerName>
        <issuerTradingSymbol>STON</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001137151</rptOwnerCik>
            <rptOwnerName>MDC MANAGEMENT CO IV LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>525 MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001302434</rptOwnerCik>
            <rptOwnerName>De Leeuw David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>525 MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001301531</rptOwnerCik>
            <rptOwnerName>Delta Fund, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>525 MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001289124</rptOwnerCik>
            <rptOwnerName>McCown De Leeuw &amp; Co. IV Associates, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>525 MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001289123</rptOwnerCik>
            <rptOwnerName>McCown De Leeuw &amp; Co. IV, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>525 MIDDLEFIELD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001288347</rptOwnerCik>
            <rptOwnerName>CORNERSTONE FAMILY SERVICES LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>155 RITTENHOUSE CIRCLE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BRISTOL</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001302507</rptOwnerCik>
            <rptOwnerName>Cornerstone Family Services, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>155 RITTENHOUSE CIRCLE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BRISTOL</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units representing limited partnership interests</value>
            </securityTitle>
            <transactionDate>
                <value>2004-09-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>551250</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.53</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13532</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">In connection with the initial public offering of common units of the Issuer, the underwriters have exercised their over-allotment option to purchase an additional 551,250 common units from the Issuer (the &quot;Over-Allotment Purchase&quot;) which closed on September 23, 2004.  Pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, 50% of the proceeds from the Over-Allotment Purchase were used to redeem 551,250 common units owned by CFSI LLC, a Delaware limited liability company (&quot;CFSI&quot;).</footnote>
        <footnote id="F2">The securities reported on this Form 4 are held directly by CFSI.  McCown De Leeuw &amp; Co. IV, L.P., a California limited partnership (&quot;MDCIV&quot;), McCown De Leeuw &amp; Co. IV Associates, L.P., a California limited partnership (&quot;MDCIVA&quot;) and Delta Fund LLC, a California limited liability company (&quot;Delta&quot; and, collectively with MDCIV and  MDCIVA, the &quot;MDC Funds&quot;) collectively control CFSI.  The MDC Funds also collectively control Cornerstone Family Services LLC, a Delaware limited liability company (&quot;CFS&quot;) that has an equity interest in CFSI.  MDC Management Company IV, LLC, a California limited liability company (&quot;MDC Management&quot;),  is the general partner of MDCIV and MDCIVA and, as such, controls MDCIV and MDCIVA.  George E. McCown, Robert B. Hellman, Jr. and David E. De Leeuw are managing directors of MDC Management and, as such, collectively control MDC Management.</footnote>
        <footnote id="F3">Messrs. Hellman and McCown file Section 16 reports separately from the Reporting Persons.  Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>MDC Management Co. IV, LLC, by Robert B. Hellman, Jr., Managing Member</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>David E. De Leeuw, by Pamela Swain, Attorney-In-Fact</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Delta Fund LLC, by Robert B. Hellman, Jr., Member</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>McCown De Leeuw &amp; Co. IV Associates, L.P., by MDC Management Co. IV, LLC, by Robert B. Hellman, Jr., Managing Member</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>McCown De Leeuw &amp; Co. IV, L.P., by MDC Management Co. IV, LLC, by Robert B. Hellman, Jr., Managing Member</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>William R. Shane, Executive Vice President</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>William R. Shane, Exec. Vice President</signatureName>
        <signatureDate>2004-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>

