<SEC-DOCUMENT>0001225208-24-006886.txt : 20240617
<SEC-HEADER>0001225208-24-006886.hdr.sgml : 20240617
<ACCEPTANCE-DATETIME>20240617214149
ACCESSION NUMBER:		0001225208-24-006886
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240614
FILED AS OF DATE:		20240617
DATE AS OF CHANGE:		20240617

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BOURLA ALBERT
		CENTRAL INDEX KEY:			0001595703
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03619
		FILM NUMBER:		241050030

	MAIL ADDRESS:	
		STREET 1:		PFIZER INC. ATTN CORP. SECRETARY
		STREET 2:		235 EAST 42ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PFIZER INC
		CENTRAL INDEX KEY:			0000078003
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				135315170
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		66 HUDSON BOULEVARD EAST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001-2192
		BUSINESS PHONE:		2127332323

	MAIL ADDRESS:	
		STREET 1:		66 HUDSON BOULEVARD EAST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001-2192

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PFIZER CHARLES & CO INC
		DATE OF NAME CHANGE:	19710908
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-06-14</periodOfReport>

    <issuer>
        <issuerCik>0000078003</issuerCik>
        <issuerName>PFIZER INC</issuerName>
        <issuerTradingSymbol>PFE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001595703</rptOwnerCik>
            <rptOwnerName>BOURLA ALBERT</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>66 HUDSON BOULEVARD EAST</rptOwnerStreet1>
            <rptOwnerStreet2>ATTN: CORPORATE SECRETARY</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10001-2192</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>Chairman &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock Units SSP</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-06-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>19.0000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.5300</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>19.0000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>669366.0000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each unit represents one phantom share of common stock.</footnote>
        <footnote id="F2">These units, which were acquired pursuant to the Pfizer Supplemental Savings Plan, are settled in cash following the reporting person's separation from service and may be transferred by the reporting person into an alternative investment account at any time.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Susan E. Grant, by power of atty., for Albert Bourla</signatureName>
        <signatureDate>2024-06-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
