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

    <schemaVersion>X0607</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2026-03-18</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001995574</issuerCik>
        <issuerName>Icon Energy Corp</issuerName>
        <issuerTradingSymbol>ICON</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002124384</rptOwnerCik>
            <rptOwnerName>Panagiotidi Ismini Evangelia</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>true</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>17TH KM NATIONAL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>ATHENS-LAMIA &amp; FOINIKOS STR.</rptOwnerStreet2>
            <rptOwnerCity>NEA KIFISSIA</rptOwnerCity>
            <rptOwnerNonUSStateTerritory>ATHENS</rptOwnerNonUSStateTerritory>
            <rptOwnerCountry>J3</rptOwnerCountry>
            <rptOwnerZipCode>94041</rptOwnerZipCode>
            <rptOwnerStateDescription>GREECE</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>true</isTenPercentOwner>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Atlantis Holding Corp.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Series B Perpetual Preferred Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1500000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Atlantis Holding Corp.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Cumulative Convertible Perpetual Preferred Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2025-07-16</value>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Atlantis Holding Corp.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The reported securities are held by Atlantis Holding Corp., a company incorporated in the Marshall Islands and controlled by the Reporting Person. The Reporting Person may be deemed to beneficially own the securities owned directly by Atlantis Holding Corp. The Reporting Person
disclaims beneficial ownership of the reported securities except to the extent of her pecuniary interest.</footnote>
        <footnote id="F2">Atlantis Holding Corp. holds 18,954 Series A Cumulative Convertible Perpetual Preferred Shares which may be converted at its option until July 15, 2032, to the Company's common shares, at a conversion price equal to the lesser of $1,200 and the volume weighted average price of the Company's common shares over the five consecutive trading day period expiring on the trading day immediately prior to the date of delivery of written notice of the conversion. The Series A Cumulative Convertible Perpetual Preferred Shares have no expiration date.</footnote>
    </footnotes>

    <remarks>Exhibit 24 - Power of Attorney.</remarks>

    <ownerSignature>
        <signatureName>/s/ Dennis Psachos, Attorney-in-Fact for Ismini Panagiotidi</signatureName>
        <signatureDate>2026-03-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
