<SEC-DOCUMENT>0001567619-21-001420-index.html : 20210125
<SEC-HEADER>0001567619-21-001420.hdr.sgml : 20210125
<ACCEPTANCE-DATETIME>20210125094512
ACCESSION NUMBER:		0001567619-21-001420
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210125
DATE AS OF CHANGE:		20210125
EFFECTIVENESS DATE:		20210125

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HENNESSY ADVISORS INC
		CENTRAL INDEX KEY:			0001145255
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		IRS NUMBER:				680176227
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-06715
		FILM NUMBER:		21548235

	BUSINESS ADDRESS:	
		STREET 1:		7250 REDWOOD BLVD.
		STREET 2:		SUITE 200
		CITY:			NOVATO
		STATE:			CA
		ZIP:			94945
		BUSINESS PHONE:		415-899-1555

	MAIL ADDRESS:	
		STREET 1:		7250 REDWOOD BLVD.
		STREET 2:		SUITE 200
		CITY:			NOVATO
		STATE:			CA
		ZIP:			94945
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INFORMATION TABLE
<SEQUENCE>2
<FILENAME>form13fInfoTable.xml
<TEXT>
Document 2 - file: form13fInfoTable.html

Document 2 - RAW XML: form13fInfoTable.xml

</DOCUMENT>
</SEC-DOCUMENT>