<SEC-DOCUMENT>0001679182-25-000002-index.html : 20250131
<SEC-HEADER>0001679182-25-000002.hdr.sgml : 20250131
<ACCEPTANCE-DATETIME>20250131122745
ACCESSION NUMBER:		0001679182-25-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250129
FILED AS OF DATE:		20250131
DATE AS OF CHANGE:		20250131

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Herman Thomas E
		CENTRAL INDEX KEY:			0001679182
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21484
		FILM NUMBER:		25577117

	MAIL ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CALAMOS STRATEGIC TOTAL RETURN FUND
		CENTRAL INDEX KEY:			0001275214
		ORGANIZATION NAME:           	
		IRS NUMBER:				043785941
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563
		BUSINESS PHONE:		6302451046

	MAIL ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>