    <SEC-DOCUMENT>0001193125-25-045741-index.html : 20250304
    <SEC-HEADER>0001193125-25-045741.hdr.sgml : 20250304
    <ACCEPTANCE-DATETIME>20250304172310
    ACCESSION NUMBER:		0001193125-25-045741
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		4
    CONFORMED PERIOD OF REPORT:	20250417
    FILED AS OF DATE:		20250304
    DATE AS OF CHANGE:		20250304

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Nuveen S&P 500 BuyWrite Income Fund
    		CENTRAL INDEX KEY:			0001298699
    		ORGANIZATION NAME:
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	811-21619
    		FILM NUMBER:		25706554

    	BUSINESS ADDRESS:
    		STREET 1:		333 WEST WACKER DRIVE
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    		BUSINESS PHONE:		312-917-8146

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

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Nuveen Equity Premium Income Fund
    		DATE OF NAME CHANGE:	20040903

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Nuveen Premium Income Strategy Fund
    		DATE OF NAME CHANGE:	20040727
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>d930587ddef14a.htm
    <DESCRIPTION>NUVEEN S&P 500 BUYWRITE INCOME FUND
    <TEXT>
    Document 1 - file: d930587ddef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g930587dsp052.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g930587dsp052.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g930587dsp053.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g930587dsp053.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g930587g58b43.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g930587g58b43.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>