<SEC-DOCUMENT>0001477932-23-007982.txt : 20231030
<SEC-HEADER>0001477932-23-007982.hdr.sgml : 20231030
<ACCEPTANCE-DATETIME>20231030215012
ACCESSION NUMBER:		0001477932-23-007982
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231026
FILED AS OF DATE:		20231030
DATE AS OF CHANGE:		20231030

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Donfeld Joshua Jay
		CENTRAL INDEX KEY:			0001870347

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41555
		FILM NUMBER:		231362108

	MAIL ADDRESS:	
		STREET 1:		C/O ASP ISOTOPES INC.
		STREET 2:		433 PLAZA REAL, SUITE 275
		CITY:			BOCA RATON
		STATE:			FL
		ZIP:			90210

	FORMER NAME:	
		FORMER CONFORMED NAME:	Donfeld Joshua
		DATE OF NAME CHANGE:	20210630

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASP Isotopes Inc.
		CENTRAL INDEX KEY:			0001921865
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		IRS NUMBER:				872618235
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1101 PENNSYLVANIA AVENUE NW
		STREET 2:		SUITE 300
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20004
		BUSINESS PHONE:		202-756-2245

	MAIL ADDRESS:	
		STREET 1:		1101 PENNSYLVANIA AVENUE NW
		STREET 2:		SUITE 300
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20004
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-10-26-05:00</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0001921865</issuerCik>
        <issuerName>ASP Isotopes Inc.</issuerName>
        <issuerTradingSymbol>ASPI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001870347</rptOwnerCik>
            <rptOwnerName>Donfeld Joshua Jay</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ASP ISOTOPES INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1101 PENNSYLVANIA AVENUE NW, SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20004</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-10-26-05:00</value>
            </transactionDate>
            <deemedExecutionDate>
                <footnoteId id="F1"/>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>104167</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.96</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1104167</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares of the Issuer's Common Stock were purchased in the Issuer's private placement of Common pursuant to a Securities Purchase Agreement, dated October 9, 2023, by and among the Issuer and the other purchasers named therein. The shares of Common Stock acquired were purchased at a price per share of $0.96 per share of Common Stock (the consolidated closing bid price per share immediately preceding the signing of the binding agreement to issue the securities).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joshua J. Donfeld</signatureName>
        <signatureDate>2023-10-30-05:00</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
