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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-02-10</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001585064</issuerCik>
        <issuerName>Fidelity &amp; Guaranty Life</issuerName>
        <issuerTradingSymbol>FGL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000924255</rptOwnerCik>
            <rptOwnerName>STEINBERG JOSEPH S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FIDELITY &amp; GUARANTY LIFE</rptOwnerStreet1>
            <rptOwnerStreet2>TWO RUAN CENTER, 601 LOCUST ST., 14TH FL</rptOwnerStreet2>
            <rptOwnerCity>DES MOINES</rptOwnerCity>
            <rptOwnerState>IA</rptOwnerState>
            <rptOwnerZipCode>50309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <remarks>Mr. Steinberg is the chairman of the board of Harbinger Group, Inc., which is the parent corporation of the Issuer.  Harbinger Group, Inc. owns 47,000,000 shares of common stock.  Mr. Steinberg disclaims beneficial ownership of all common stock of the Issuer owned by Harbinger Group, Inc. and this filing shall not be deemed an admission that Mr. Steinberg is, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities.</remarks>

    <ownerSignature>
        <signatureName>/s/ Isabelle Aragon, Attorney-in-fact</signatureName>
        <signatureDate>2015-02-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
