<SEC-DOCUMENT>0001193125-21-234987-index.html : 20210803
<SEC-HEADER>0001193125-21-234987.hdr.sgml : 20210803
<ACCEPTANCE-DATETIME>20210803162911
ACCESSION NUMBER:		0001193125-21-234987
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210803
DATE AS OF CHANGE:		20210803

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GLADSTONE CAPITAL CORP
		CENTRAL INDEX KEY:			0001143513
		IRS NUMBER:				542040781
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	814-00237
		FILM NUMBER:		211140281

	BUSINESS ADDRESS:	
		STREET 1:		1521 WESTBRANCH DRIVE
		STREET 2:		SUITE 100
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		703-287-5800

	MAIL ADDRESS:	
		STREET 1:		1521 WESTBRANCH DRIVE
		STREET 2:		SUITE 100
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>d203664d10q.htm
<DESCRIPTION>FORM 10-Q
<TEXT>
Document 1 - file: d203664d10q.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>d203664dex311.htm
<DESCRIPTION>EX-31.1
<TEXT>
Document 2 - file: d203664dex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>d203664dex312.htm
<DESCRIPTION>EX-31.2
<TEXT>
Document 3 - file: d203664dex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>d203664dex321.htm
<DESCRIPTION>EX-32.1
<TEXT>
Document 4 - file: d203664dex321.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>5
<FILENAME>d203664dex322.htm
<DESCRIPTION>EX-32.2
<TEXT>
Document 5 - file: d203664dex322.htm

</DOCUMENT>
</SEC-DOCUMENT>