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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-10-02</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001810739</issuerCik>
        <issuerName>Radius Global Infrastructure, Inc.</issuerName>
        <issuerTradingSymbol>RADI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001420969</rptOwnerCik>
            <rptOwnerName>Goldstein Richard I</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RADIUS GLOBAL INFRASTRUCTURE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>3 BALA PLAZA EAST, SUITE 502</rptOwnerStreet2>
            <rptOwnerCity>BALA CYNWYD</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19004</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class B Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>940909</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series B Founder Preferred Stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class B Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>75000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A LTIP units</value>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>415455</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A LTIP units</value>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>415454</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A LTIP units</value>
                <footnoteId id="F3"/>
                <footnoteId id="F6"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>110000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series B LTIP units</value>
                <footnoteId id="F3"/>
                <footnoteId id="F7"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>75000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects shares of Class B Common Stock, par value $0.0001 per share, of Radius Global Infrastructure, Inc. (the &quot;Company&quot;) (such shares, &quot;Class B Shares&quot;) that were granted in tandem with a corresponding number of Series A long-term incentive units (&quot;Series A LTIP Units&quot;) in APW OpCo LLC (&quot;OpCo&quot;), in which the Company owns a 91.8% interest.  Class B Shares are subject to the same vesting and forfeiture conditions as the related Series A LTIP Units and shall be surrendered to the Company in the event that related Series A LTIP Units are redeemed for shares of Class A Common Stock, par value $0.0001 per share, of the Company (&quot;Class A Shares&quot;).</footnote>
        <footnote id="F2">Reflects shares of Series B Founder Preferred Stock, par value $0.0001 per share, of the Company (&quot;Series B Founder Preferred Stock&quot;) that were granted in tandem with a corresponding number of Series B long-term incentive units in OpCo (&quot;Series B LTIP Units&quot;).  Shares of Series B Founder Preferred Stock are subject to the same vesting and forfeiture conditions as the related Series B LTIP Units, shall be surrendered to the Company in the event that related Series B LTIP Units are redeemed for Class A Shares.  Shares of Series B Founder Preferred Stock are immediately convertible, on a one-to-one basis, into Class B Shares. Additionally, shares of Series B Founder Preferred Stock shall automatically convert to Class B Shares on a one-for-one basis on December 31, 2027.</footnote>
        <footnote id="F3">Once equitized, Series A LTIP Units and Series B LTIP Units may be redeemed for Class A Shares on a one-for-one basis; provided that such Class A Shares will be subject to the same vesting and forfeiture conditions as the exchanged Series A LTIP Units or Series B LTIP Units, as the case may be.</footnote>
        <footnote id="F4">Reflects Series A LTIP Units that are subject to time-based vesting conditions and vest in equal installments on the first, second, third, fourth and fifth anniversaries of February 10, 2020.</footnote>
        <footnote id="F5">Reflects Series A LTIP Units that are subject to time- and performance-based vesting conditions. The time-based vesting condition is satisfied with respect to 50% of such Series A LTIP Units on each of the third and seventh anniversaries of February 10, 2020. The performance-based vesting condition will be satisfied with respect to 25% of such Series A LTIP Units on the last trading day of any year ending on or prior to December 31, 2027 that the 10-Day VWAP (as defined in the applicable award agreement) first equals or exceeds $11.50 per Class A Share, $13.50 per Class A Share, $15.50 per Class A Share and $17.50 per Class A Share.</footnote>
        <footnote id="F6">Reflects Series A LTIP Units that are subject to time-based vesting conditions and vest in equal installments on the first, second and third anniversaries of February 10, 2020.</footnote>
        <footnote id="F7">Reflects Series B LTIP Units that vest pro rata on the last trading day of any year ending on or prior to December 31, 2029 that the 10-Day VWAP exceeds $10.00 per Class A Share, with 0% vesting of such Series B LTIP Units at $10.00 per Class A Share and linear vesting through and until 100% vesting of such Series B LTIP Units at $20.00 per Class A Share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Richard I. Goldstein</signatureName>
        <signatureDate>2020-10-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
