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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2019-10-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001785592</issuerCik>
        <issuerName>Merida Merger Corp. I</issuerName>
        <issuerTradingSymbol>MCMJU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001792542</rptOwnerCik>
            <rptOwnerName>Nannetti Andres</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MERIDA MERGER CORP. I</rptOwnerStreet1>
            <rptOwnerStreet2>641 LEXINGTON AVENUE, 18TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3450000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Merida Holdings, LLC</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Warrant</value>
                <footnoteId id="F3"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.50</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3150000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Merida Holdings, LLC</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes up to 450,000 shares that may be forfeited if the underwriters of the Issuer's initial public offering do not exercise the overallotment option in full.</footnote>
        <footnote id="F2">The shares and warrants are owned directly by Merida Holdings, LLC. The reporting person is a manager of Merida Holdings, LLC and will be one of four people to approve actions of such entity. Each manager has one vote, and the approval of at least three of the four managing members is required for approval of an action of the entity. The reporting person disclaims ownership of the securities held by Merida Holdings, LLC, except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Includes warrants which, prior to the effective date of the registration statement relating to the Issuer's initial public offering, Merida Holdings, LLC irrevocably committed to purchase. Does not include up to 302,400 additional warrants which Merida Holdings, LLC irrevocably committed to purchase in the event the underwriters in the Issuer's initial public offering exercise the over-allotment option in full.</footnote>
        <footnote id="F4">Each warrant will become exercisable on the later of the completion of an initial business combination or November 4, 2020.</footnote>
        <footnote id="F5">Each warrant will expire five years after the completion of an initial business combination.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Andres Nannetti</signatureName>
        <signatureDate>2019-11-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
