<SEC-DOCUMENT>0001752724-23-040586-index.html : 20230224
<SEC-HEADER>0001752724-23-040586.hdr.sgml : 20230224
<ACCEPTANCE-DATETIME>20230224165413
ACCESSION NUMBER:		0001752724-23-040586
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20221231
FILED AS OF DATE:		20230224
DATE AS OF CHANGE:		20230224
PERIOD START:           	20230331

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN SELECT MATURITIES MUNICIPAL FUND
		CENTRAL INDEX KEY:			0000890119
		IRS NUMBER:				363837799
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0531

	FILING VALUES:
		FORM TYPE:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-07056
		FILM NUMBER:		23668246

	BUSINESS ADDRESS:	
		STREET 1:		333 WEST WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129177200

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN INTERMEDIATE OPPORTUNITY MUNICIPAL FUND
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
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<TYPE>NPORT-P
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>NPORT-EX
<SEQUENCE>2
<FILENAME>tiaa_NIMF.htm
<TEXT>
Document 2 - file: tiaa_NIMF.htm

</DOCUMENT>
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