<SEC-DOCUMENT>0001193125-18-233168-index.html : 20180731
<SEC-HEADER>0001193125-18-233168.hdr.sgml : 20180731
<ACCEPTANCE-DATETIME>20180731161013
ACCESSION NUMBER:		0001193125-18-233168
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20180630
FILED AS OF DATE:		20180731
DATE AS OF CHANGE:		20180731

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:		18981212

	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>d581636d10q.htm
<DESCRIPTION>10-Q
<TEXT>
Document 1 - file: d581636d10q.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>d581636dex311.htm
<DESCRIPTION>EX-31.1
<TEXT>
Document 2 - file: d581636dex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>d581636dex312.htm
<DESCRIPTION>EX-31.2
<TEXT>
Document 3 - file: d581636dex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>d581636dex321.htm
<DESCRIPTION>EX-32.1
<TEXT>
Document 4 - file: d581636dex321.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>5
<FILENAME>d581636dex322.htm
<DESCRIPTION>EX-32.2
<TEXT>
Document 5 - file: d581636dex322.htm

</DOCUMENT>
</SEC-DOCUMENT>