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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-11-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001620928</issuerCik>
        <issuerName>Rice Midstream Partners LP</issuerName>
        <issuerTradingSymbol>RMP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000033213</rptOwnerCik>
            <rptOwnerName>EQT Corp</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>625 LIBERTY AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1700</rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15222</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001552977</rptOwnerCik>
            <rptOwnerName>EQT Investments Holdings, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>101 CONVENTION CENTER DRIVE, SUITE 850</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001607430</rptOwnerCik>
            <rptOwnerName>EQT Production Co</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>625 LIBERTY AVENUE, SUITE 1700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15222</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001588238</rptOwnerCik>
            <rptOwnerName>EQT RE, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>625 LIBERTY AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 170</rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15222</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001624644</rptOwnerCik>
            <rptOwnerName>Rice Energy Operating LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2200 RICE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CANONSBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15317</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001627878</rptOwnerCik>
            <rptOwnerName>Rice Midstream Holdings LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>400 WOODCLIFF DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CANONSBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15317</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001666989</rptOwnerCik>
            <rptOwnerName>Rice Midstream GP Management LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>400 WOODCLIFF DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CANONSBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15317</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001666988</rptOwnerCik>
            <rptOwnerName>Rice Midstream GP Holdings LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>400 WOODCLIFF DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CANONSBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15317</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 partner interests</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3623</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3623</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Subordinated units representing limited partner interests</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2017-11-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>28753623</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Units representing limited partner interests</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>28753623</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>28753623</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On November 13, 2017, pursuant to the Agreement and Plan of Merger dated as of June 19, 2017 (the &quot;Merger Agreement&quot;), by and among Rice Energy Inc. (&quot;Rice&quot;), EQT Corporation (&quot;EQT&quot;) and Eagle Merger Sub I, Inc. (&quot;Merger Sub&quot;), Merger Sub merged with and into Rice (the &quot;Merger&quot;), with Rice (now EQT RE, LLC (&quot;EQT RE&quot;)) continuing as the surviving entity and as a wholly owned indirect subsidiary of EQT. This Form 4 is being filed jointly by EQT, EQT Investments Holdings, LLC (&quot;Investments Holdings&quot;), EQT Production Company (&quot;EQT Production&quot;), EQT RE, Rice Energy Operating LLC (&quot;REO&quot;), Rice Midstream Holdings LLC (&quot;RMH&quot;), Rice Midstream GP Management LLC (&quot;Rice GP Management&quot;) and Rice Midstream GP Holdings LP (&quot;Rice GP Holdings&quot;) in connection with the closing of the Merger. EQT directly owns 100% of the outstanding membership interests of Investments Holdings. Investments Holdings directly owns 100% of the common stock of EQT Production. EQT Production directly owns 100% of the</footnote>
        <footnote id="F2">(cont. from footnote 1) outstanding membership interests of EQT RE. EQT RE and Rice Energy Sub Holdings LLC (&quot;Rice Sub Holdings&quot;) directly own 100% of the outstanding membership interests in REO, and EQT RE directly owns 100% of the outstanding membership interests of Rice Sub Holdings. REO and Rice Midstream GP LLC (&quot;Rice GP LLC&quot;) directly own 100% of the outstanding membership interests of RMH, and REO directly owns 100% of the outstanding membership interests of Rice GP LLC. RMH and Rice GPH LLC directly own 100% of the outstanding limited partner interests in Rice GP Holdings, which directly holds interests in Rice Midstream Partners LP (the &quot;Issuer&quot;), and RMH directly owns 100% of the outstanding membership interests of Rice GPH LLC and Rice GP Management, the general partner of Rice GP Holdings. EQT, Investments Holdings, EQT Production, EQT RE, REO, RMH and Rice GP Management may therefore be deemed to beneficially own securities of the Issuer owned directly by Rice GP Holdings.</footnote>
        <footnote id="F3">The Subordinated Units have no expiration date and will convert into Common Units on a one-for-one basis at the end of the &quot;subordination period&quot; described in the Issuer's Prospectus (File No. 333-199932) filed with the Securities and Exchange Commission on December 18, 2014.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Chief Accounting Officer of EQT Corporation</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Joshua C. Miller, Vice President of EQT Investments Holdings, LLC</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of EQT Production Company</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of EQT RE, LLC</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of Rice Energy Operating LLC</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of Rice Midstream Holdings LLC</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of Rice Midstream GP Management LLC</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jimmi Sue Smith, Assistant Treasurer of Rice Midstream GP Management LLC, the general partner of Rice Midstream GP Holdings LP</signatureName>
        <signatureDate>2017-11-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
