    <SEC-DOCUMENT>0001104659-22-068617-index.html : 20220607
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    ACCESSION NUMBER:		0001104659-22-068617
    CONFORMED SUBMISSION TYPE:	N-CSR/A
    PUBLIC DOCUMENT COUNT:		16
    CONFORMED PERIOD OF REPORT:	20211031
    FILED AS OF DATE:		20220607
    DATE AS OF CHANGE:		20220606
    EFFECTIVENESS DATE:		20220607

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CALAMOS GLOBAL TOTAL RETURN FUND
    		CENTRAL INDEX KEY:			0001285650
    		IRS NUMBER:				203377281
    		FISCAL YEAR END:			1031

    	FILING VALUES:
    		FORM TYPE:		N-CSR/A
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21547
    		FILM NUMBER:		22999060

    	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
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    <DOCUMENT>
    <TYPE>N-CSR/A
    <SEQUENCE>1
    <FILENAME>tm2217714d1_ncsra.htm
    <DESCRIPTION>N-CSR/A
    <TEXT>
    Document 1 - file: tm2217714d1_ncsra.htm

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    <TYPE>EX-99.CODE ETH
    <SEQUENCE>2
    <FILENAME>ex99-codeeth.htm
    <DESCRIPTION>CODE OF ETHICS
    <TEXT>
    Document 2 - file: ex99-codeeth.htm

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    <TYPE>EX-99.CERT
    <SEQUENCE>3
    <FILENAME>tm2217714d1_ex99-cert.htm
    <DESCRIPTION>EXHIBIT 99.CERT
    <TEXT>
    Document 3 - file: tm2217714d1_ex99-cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>4
    <FILENAME>tm2217714d1_ex99-906cert.htm
    <DESCRIPTION>EXHIBIT 99.906CERT
    <TEXT>
    Document 4 - file: tm2217714d1_ex99-906cert.htm

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    <TYPE>EX-99.(A)(2)(III)
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    <FILENAME>ex99-a2iii.htm
    <DESCRIPTION>PROXY VOTING POLICIES AND PROCEDURES
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    Document 5 - file: ex99-a2iii.htm

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    Document 12 - file: cgo-ncsr_103121img007.gif

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    Document 15 - file: cgo-ncsr_103121img010.gif

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    <SEQUENCE>16
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