<SEC-DOCUMENT>0001752724-21-181806-index.html : 20210824
<SEC-HEADER>0001752724-21-181806.hdr.sgml : 20210824
<ACCEPTANCE-DATETIME>20210824112315
ACCESSION NUMBER:		0001752724-21-181806
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210824
PERIOD START:           	20210930

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			THORNBURG INVESTMENT TRUST
		CENTRAL INDEX KEY:			0000816153
		IRS NUMBER:				061158764
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05201
		FILM NUMBER:		211200176

	BUSINESS ADDRESS:	
		STREET 1:		2300 NORTH RIDGETOP ROAD
		CITY:			SANTA FE
		STATE:			NM
		ZIP:			87506-8361
		BUSINESS PHONE:		5059840200

	MAIL ADDRESS:	
		STREET 1:		2300 NORTH RIDGETOP ROAD
		CITY:			SANTA FE
		STATE:			NM
		ZIP:			87506-8361

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THORNBURG INCOME TRUST
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIMITED TERM TRUST
		DATE OF NAME CHANGE:	19870816
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000816153
<SERIES-ID>S000011850
<SERIES-NAME>Thornburg Small/Mid Cap Growth Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032375
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class A
<CLASS-CONTRACT-TICKER-SYMBOL>THCGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032376
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class C
<CLASS-CONTRACT-TICKER-SYMBOL>TCGCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032377
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class I
<CLASS-CONTRACT-TICKER-SYMBOL>THIGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032379
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class R5
<CLASS-CONTRACT-TICKER-SYMBOL>THGRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000042673
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class R4
<CLASS-CONTRACT-TICKER-SYMBOL>TCGRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000042674
<CLASS-CONTRACT-NAME>Thornburg Small/Mid Cap Growth Fund - Class R3
<CLASS-CONTRACT-TICKER-SYMBOL>THCRX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<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>NPORT_9P12_8807160942.htm
<TEXT>
Document 2 - file: NPORT_9P12_8807160942.htm

</DOCUMENT>
</SEC-DOCUMENT>