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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-08-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001286681</issuerCik>
        <issuerName>DOMINOS PIZZA INC</issuerName>
        <issuerTradingSymbol>DPZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001821840</rptOwnerCik>
            <rptOwnerName>HEADEN CYNTHIA A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>30 FRANK LLOYD WRIGHT DR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ANN ARBOR</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Supply Chain Services</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.01 par value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2522.342</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, $0.01 par value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22.368</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Owned by spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>212.52</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2021-07-19</value>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <value>2027-07-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>515</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>283.68</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2022-07-18</value>
                <footnoteId id="F9"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-07-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>900</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>275.35</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2023-07-10</value>
                <footnoteId id="F10"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-07-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>520</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>413.68</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2024-07-15</value>
                <footnoteId id="F11"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-07-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>580</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>413.68</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2024-07-15</value>
                <footnoteId id="F11"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-07-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>180</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>418.33</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2024-08-20</value>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-08-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $0.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes 145 shares of common stock representing the final tranche of an original grant of performance-based restricted stock that shall vest on July 19, 2021 if applicable performance conditions are achieved.</footnote>
        <footnote id="F2">Includes 230 shares of common stock representing the final two tranches of an original grant of performance-based restricted stock that shall vest one-half on each of July 18, 2021 and July 18, 2022 if applicable performance conditions are achieved.</footnote>
        <footnote id="F3">Includes 630 shares of common stock representing the final three tranches of an original grant of performance-based restricted stock that shall vest one-third on each of February 20, 2021, February 20, 2022 and February 20, 2023 if applicable performance conditions are achieved.</footnote>
        <footnote id="F4">Includes 278 shares of common stock representing the final three tranches of an original grant of performance-based restricted stock that shall vest one-third on each of July 10, 2021, July 10, 2022 and July 10, 2023 if applicable performance conditions are achieved.</footnote>
        <footnote id="F5">Includes 140 shares of common stock representing an original grant of performance-based restricted stock that shall vest one-fourth on each of July 15, 2021, July 15, 2022, July 15, 2023 and July 15, 2024 if applicable performance conditions are achieved.</footnote>
        <footnote id="F6">Includes 450 shares of common stock representing an original grant of performance-based restricted stock that shall vest one-fourth on each of July 15, 2021, July 15, 2022, July 15, 2023 and July 15, 2024 if applicable performance conditions are achieved.</footnote>
        <footnote id="F7">Includes 130 shares of common stock representing an original grant of performance-based restricted stock that shall vest one-fourth on each of August 20, 2021, August 20, 2022, August 20, 2023 and August 20, 2024 if applicable performance conditions are achieved.</footnote>
        <footnote id="F8">The number of underlying shares represents the unexercised portion of the original grant as of the date of this report. One-half of the unexercised options vested on July 19, 2020 and one-half shall vest on July 19, 2021.</footnote>
        <footnote id="F9">The options to purchase common stock vest one-fourth each year on the anniversary date of the grant date. Thus, one-fourth vested on each of July 18, 2019 and July 18, 2020 and one-fourth shall vest on each of July 18, 2021 and July 18, 2022.</footnote>
        <footnote id="F10">The options to purchase common stock vest one-fourth each year on the anniversary date of the grant date. Thus, one-fourth vested on July 10, 2020 and one-fourth shall vest on each of July 10, 2021, July 10, 2022 and July 10, 2023.</footnote>
        <footnote id="F11">The options to purchase common stock vest one-fourth each year on the anniversary date of the grant date. Thus, one-fourth shall vest on each of July 15, 2021, July 15, 2022, July 15, 2023 and July 15, 2024.</footnote>
        <footnote id="F12">The options to purchase common stock vest one-fourth each year on the anniversary date of the grant date. Thus, one-fourth shall vest on each of August 20, 2021, August 20, 2022, August 20, 2023 and August 20, 2024.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kevin S. Morris, attorney-in-fact</signatureName>
        <signatureDate>2020-08-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
