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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-06-22</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001415684</issuerCik>
        <issuerName>MusclePharm Corp</issuerName>
        <issuerTradingSymbol>MSLP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001738154</rptOwnerCik>
            <rptOwnerName>White Winston Select Asset Fund Series Fund MP-18, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001647840</rptOwnerCik>
            <rptOwnerName>White Winston Select Asset Funds, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001647837</rptOwnerCik>
            <rptOwnerName>Feagan Donald</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WHITE WINSTON SELECT ASSET FUNDS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001008190</rptOwnerCik>
            <rptOwnerName>BLUNDELL MARK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WHITE WINSTON SELECT ASSET FUNDS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001559652</rptOwnerCik>
            <rptOwnerName>Mahoney Robert P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WHITE WINSTON SELECT ASSET FUNDS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001647702</rptOwnerCik>
            <rptOwnerName>Enright Todd M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WHITE WINSTON SELECT ASSET FUNDS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>265 FRANKLIN ST., SUITE 1702</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2927677</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks>White Winston Select Asset Funds, LLC is an indirect beneficial owner of 2,927,677 shares of Issuer's Common Stock, par value $0.001 per share, by virtue of being a member and the sole manager of White Winston Select Asset Fund Series Fund MP-18, LLC.

Messrs. Feagan, Blundell, Mahoney and Enright are indirect beneficial owners of 2,927,677 shares of Issuer's Common Stock, par value $0.001 per share, by virtue of being members and managers of White Winston Select Asset Funds, LLC, which is a member and the sole manager of White Winston Select Asset Fund Series Fund MP-18, LLC.</remarks>

    <ownerSignature>
        <signatureName>White Winston Select Asset Fund Series Fund MP-18, LLC, By: White Winston Select Asset Funds, LLC, its Manager, By: /s/ Todd M. Enright, Manager</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>White Winston Select Asset Funds, LLC, By: /s/ Todd M. Enright, Manager</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Todd M. Enright</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Mark Blundell</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Donald Feagan</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Robert Mahoney</signatureName>
        <signatureDate>2018-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
