<SEC-DOCUMENT>0001225208-24-003900.txt : 20240308
<SEC-HEADER>0001225208-24-003900.hdr.sgml : 20240308
<ACCEPTANCE-DATETIME>20240308095635
ACCESSION NUMBER:		0001225208-24-003900
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20240228
FILED AS OF DATE:		20240308
DATE AS OF CHANGE:		20240308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Nelson James N III
		CENTRAL INDEX KEY:			0002014870
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06623
		FILM NUMBER:		24732643

	MAIL ADDRESS:	
		STREET 1:		333 WEST WACKER DRIVE
		STREET 2:		C/O NUVEEN STE 3400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		CENTRAL INDEX KEY:			0000885732
		ORGANIZATION NAME:           	
		IRS NUMBER:				363828111
		STATE OF INCORPORATION:			MA

	BUSINESS ADDRESS:	
		STREET 1:		333 W WACKER DR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129178200

	MAIL ADDRESS:	
		STREET 1:		333 W WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN INSURED CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19920929

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2024-02-28</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000885732</issuerCik>
        <issuerName>NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO</issuerName>
        <issuerTradingSymbol>NXC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002014870</rptOwnerCik>
            <rptOwnerName>Nelson James N III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>333 W. WACKER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2900</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>nelsoniiipoa.txt</remarks>

    <ownerSignature>
        <signatureName>Mark L. Winget/ Signed Under Power of Attorney</signatureName>
        <signatureDate>2024-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>nelsoniiipoa.txt
<TEXT>
POWER OF ATTORNEY

For Executing Forms 3, 4 and 5

Know all by these present, that the undersigned hereby constitutes and appoints
each Kevin J. McCarthy, John McCann and Mark L. Winget, his/her true and lawful
attorney in fact to:

(1)execute for and on behalf of the undersigned Forms 3, 4 and 5 (and any
amendments thereto) in connection with Nuveen Investments Closed-End Exchange
Traded Funds and in accordance with the requirements of Section 16(a) of the
Securities Exchange Act of 1934 and Section 30(f) of the Investment Company
Act of 1940 and the rules thereunder;

(2)do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable in connection with the execution and timely
filing of any such Form 3, 4 and 5 (and any amendment thereto) with the United
States Securities and Exchange Commission, the New York Stock Exchange and any
other authority; and

(3)take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney in fact on behalf
of the undersigned pursuant to this Power of Attorney shall be in such form
and shall contain such terms and conditions as such attorney in fact may
approve in his/her discretion.

The undersigned hereby grants to each such attorney in fact full power and
authority to do and perform each and every act and thing whatsoever requisite,
necessary and proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as such attorney in
fact might or could do if personally present, with the full power of
substitute, by virtue of this power of attorney and the rights and powers
herein granted. The undersigned acknowledges that the foregoing attorneys
in fact, in serving in such capacity at the request of the undersigned, are not
assuming any of the undersigneds responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934 and Section 30(f) of the
Investment Company Act of 1940.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 5th day of March, 2024.


				/S/
				Signature

				James Nelson III
				Print Name



</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
