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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-01-25</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001179060</issuerCik>
        <issuerName>EnLink Midstream Partners, LP</issuerName>
        <issuerTradingSymbol>ENLK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001116073</rptOwnerCik>
            <rptOwnerName>ECHOLS LELDON E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1722 ROUTH STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1300</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2019-01-25</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>35438</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The Reporting Person ceased to beneficially own the common units representing limited partner interests (&quot;Common Units&quot;) in EnLink Midstream Partners, LP (the &quot;Issuer&quot;) reported herein at the Effective Time (as defined below) of the merger (the &quot;Merger&quot;) of NOLA Merger Sub, LLC (&quot;Merger Sub&quot;) with and into the Issuer, with the Issuer surviving the merger as a subsidiary of EnLink Midstream, LLC (&quot;ENLC&quot;). The Merger was effected pursuant to the Agreement and Plan of Merger, dated as of October 21, 2018 (the &quot;Merger Agreement&quot;), by and among ENLC, EnLink Midstream Manager, LLC, Merger Sub, the Issuer, and EnLink Midstream GP, LLC. The Merger closed on January 25, 2019 and was effective as of 9:30 a.m. Central Time on that date (the &quot;Effective Time&quot;).</footnote>
        <footnote id="F2">(Continued from Footnote 1)  At the Effective Time, (i) each Common Unit held by the Reporting Person immediately prior to the Merger converted into the right to receive 1.15 (the &quot;Exchange Ratio&quot;) common units representing limited liability company interests in ENLC (&quot;ENLC Common Units&quot;), and (ii) as further described in the Merger Agreement, each Restricted Incentive Unit under the Issuer's long-term incentive plan (an &quot;ENLK RIU&quot;) held by the Reporting Person immediately prior to the Merger converted into an award with respect to ENLC Common Units with substantially the same terms as such ENLK RIU, but subject to adjustment to take into account the Exchange Ratio.</footnote>
        <footnote id="F3">Following the Effective Time of the Merger, the Reporting Person no longer owns, directly or indirectly, any Common Units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Barry E. Davis, by power of attorney</signatureName>
        <signatureDate>2019-01-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
