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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 13F

                               Form 13F COVER PAGE


Report for the Calendar Year or Quarter Ended:  September 30, 2008
                                                ------------------

Check here if Amendment [ ]; Amendment Number:
                                                  ------------
  This Amendment (Check only one.): [ ]  is a restatement.
                                    [ ]  adds new holdings entries.


Institutional Investment Manager Filing this Report:

Name:     Hennessy Advisors, Inc.
Address:  7250 Redwood Boulevard, Suite 200
          Novato, CA  94945

Form 13F File Number:  028-06715

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:     Teresa M. Nilsen
Title:    Executive Vice President and Chief Financial Officer
Phone:    (415) 899-1555

Signature, Place, and Date of Signing:


/s/ Teresa M. Nilsen                  Novato, CA                October 14, 2008
--------------------------------------------------------------------------------
Teresa M. Nilsen                      City, State                      Date

Report Type  (Check only one):

[X]  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
     are reported in this report.)

[ ]  13F NOTICE. (Check here if no holdings reported are in this report, and all
     holdings are reported by other reporting manager(s).)

[ ]  13F COMBINATION REPORT. (Check here if a portion of the holdings for this
     reporting manager are reported in this report and a portion are reported by
     other reporting manager(s).)






                              FORM 13F SUMMARY PAGE



Report Summary:


Number of Other Included Managers:                              0
                                                 ----------------------

Form 13F Information Table Entry Total:                       173
                                                 ----------------------

Form 13F Information Table Value Total:                  $872,887
                                                 ----------------------
                                                       (thousands)



List of Other Included Managers:  NONE







Page 1 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

A T & T INC                 COMMON    00206R102     7,407    265,310  SH      SOLE                        265,310
------------------------------------------------------------------------------------------------------------------------------------
AECOM TECHNOLOGY CORP       COMMON    00766T100     1,007     41,200  SH      SOLE                         41,200
------------------------------------------------------------------------------------------------------------------------------------
AEGON NV                     ADR      007924103     1,705    194,200  SH      SOLE                        194,200
------------------------------------------------------------------------------------------------------------------------------------
AEROPOSTALE INC             COMMON    007865108     7,944    247,400  SH      SOLE                        247,400
------------------------------------------------------------------------------------------------------------------------------------
AETNA INC                   COMMON    00817Y108     6,547    181,300  SH      SOLE                        181,300
------------------------------------------------------------------------------------------------------------------------------------
AGCO CORP                   COMMON    001084102     7,065    165,800  SH      SOLE                        165,800
------------------------------------------------------------------------------------------------------------------------------------
AIRGAS INC                  COMMON    009363102     1,137     22,900  SH      SOLE                         22,900
------------------------------------------------------------------------------------------------------------------------------------
AK STEEL HOLDING CORP       COMMON    001547108       518     20,000  SH      SOLE                         20,000
------------------------------------------------------------------------------------------------------------------------------------
ALLIANCE IMAGING INC        COMMON    018606202    11,357  1,105,890  SH      SOLE                      1,105,890
------------------------------------------------------------------------------------------------------------------------------------
ALLIED IRISH BANKS  -ADR     ADR      019228402     1,230     74,800  SH      SOLE                         74,800
------------------------------------------------------------------------------------------------------------------------------------
ALPHA NATURAL RESOURCES INC COMMON    02076X102    19,003    369,500  SH      SOLE                        369,500
------------------------------------------------------------------------------------------------------------------------------------
ALTRIA GROUP INC            COMMON    02209S103     1,822     91,820  SH      SOLE                         91,820
------------------------------------------------------------------------------------------------------------------------------------
AMERICAN INTERNATIONAL
GROUP                       COMMON    026874107       100     30,110  SH      SOLE                         30,110
------------------------------------------------------------------------------------------------------------------------------------
AMERICA'S CAR-MART INC      COMMON    03062T105     1,389     74,700  SH      SOLE                         74,700
------------------------------------------------------------------------------------------------------------------------------------
AON CORP                    COMMON    037389103    10,602    235,800  SH      SOLE                        235,800
------------------------------------------------------------------------------------------------------------------------------------
ARCELOR MITTAL -ADR          ADR      03938L104       686     13,900  SH      SOLE                         13,900
------------------------------------------------------------------------------------------------------------------------------------
ARCHER-DANIELS-MIDLAND CO   COMMON    039483102     5,274    240,700  SH      SOLE                        240,700
------------------------------------------------------------------------------------------------------------------------------------
ARVINMERITOR INC            COMMON    043353101     6,819    522,900  SH      SOLE                        522,900
------------------------------------------------------------------------------------------------------------------------------------
ASSURANT INC                COMMON    04621X108     8,861    161,100  SH      SOLE                        161,100
------------------------------------------------------------------------------------------------------------------------------------
AUTOZONE INC                COMMON    053332102     7,733     62,700  SH      SOLE                         62,700
------------------------------------------------------------------------------------------------------------------------------------
AZZ INC                     COMMON    002474104    12,796    309,300  SH      SOLE                        309,300
------------------------------------------------------------------------------------------------------------------------------------





Page 2 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

BANK of AMERICA CORP        COMMON    060505104     8,705    248,700  SH      SOLE                        248,700
------------------------------------------------------------------------------------------------------------------------------------
BARCLAYS PLC/ENGLAND  -ADR   ADR      06738E204     1,951     79,000  SH      SOLE                         79,000
------------------------------------------------------------------------------------------------------------------------------------
BASF AG  -ADR                ADR      055262505     6,917    144,700  SH      SOLE                        144,700
------------------------------------------------------------------------------------------------------------------------------------
BB&T CORP                   COMMON    054937107     3,890    102,900  SH      SOLE                        102,900
------------------------------------------------------------------------------------------------------------------------------------
BP PLC  -ADS                 ADR      055622104     2,273     45,300  SH      SOLE                         45,300
------------------------------------------------------------------------------------------------------------------------------------
BRADY CORP                  COMMON    104674106     7,680    217,700  SH      SOLE                        217,700
------------------------------------------------------------------------------------------------------------------------------------
BRISTOL MYERS SQUIBB        COMMON    110122108     2,496    119,700  SH      SOLE                        119,700
------------------------------------------------------------------------------------------------------------------------------------
BRISTOW GROUP INC           COMMON    110394103     6,430    190,000  SH      SOLE                        190,000
------------------------------------------------------------------------------------------------------------------------------------
BT GROUP PLC  -ADR           ADR      05577E101     1,709     58,900  SH      SOLE                         58,900
------------------------------------------------------------------------------------------------------------------------------------
BUNGE LTD                   COMMON    Sedol
                                      2788713       5,332     84,400  SH      SOLE                         84,400
------------------------------------------------------------------------------------------------------------------------------------
CAL-MAINE FOODS INC         COMMON    128030202     1,147     41,800  SH      SOLE                         41,800
------------------------------------------------------------------------------------------------------------------------------------
CARNIVAL CORP/PLC (USA)     COMMON    143658300     2,641     74,700  SH      SOLE                         74,700
------------------------------------------------------------------------------------------------------------------------------------
CBIZ INC                    COMMON    124805102     9,877  1,168,900  SH      SOLE                      1,168,900
------------------------------------------------------------------------------------------------------------------------------------
CBS CORP                    COMMON    124857202     1,875    128,600  SH      SOLE                        128,600
------------------------------------------------------------------------------------------------------------------------------------
CELANESE CORP               COMMON    150870103       837     30,000  SH      SOLE                         30,000
------------------------------------------------------------------------------------------------------------------------------------
CELESTICA INC                ADR      15101Q108     1,023    158,800  SH      SOLE                        158,800
------------------------------------------------------------------------------------------------------------------------------------
CHICAGO BRIDGE & IRON CO     ADR      167250109     3,858    200,500  SH      SOLE                        200,500
------------------------------------------------------------------------------------------------------------------------------------
CHUNGHWA TELECOM CO  -ADR    ADR      17133Q304     3,875    163,700  SH      SOLE                        163,700
------------------------------------------------------------------------------------------------------------------------------------
CIGNA CORP                  COMMON    125509109     6,477    190,600  SH      SOLE                        190,600
------------------------------------------------------------------------------------------------------------------------------------
CIT GROUP INC               COMMON    125581108       945    135,800  SH      SOLE                        135,800
------------------------------------------------------------------------------------------------------------------------------------
CITIGROUP INC               COMMON    172967101     7,486    364,985  SH      SOLE                        364,985
------------------------------------------------------------------------------------------------------------------------------------




Page 3 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

CLEAN HARBORS INC           COMMON    184496107     1,270     18,800  SH      SOLE                         18,800
------------------------------------------------------------------------------------------------------------------------------------
COCA-COLA FEMSA DE C V
-ADR                         ADR      191241108    11,389    225,700  SH      SOLE                        225,700
------------------------------------------------------------------------------------------------------------------------------------
CONSTELLATION ENERGY GRP
INC                         COMMON    210371100     2,464    101,400  SH      SOLE                        101,400
------------------------------------------------------------------------------------------------------------------------------------
CORINTHIAN COLLEGES INC     COMMON    218868107     7,340    489,300  SH      SOLE                        489,300
------------------------------------------------------------------------------------------------------------------------------------
COSTCO WHOLESALE CORP       COMMON    22160K105     9,973    153,600  SH      SOLE                        153,600
------------------------------------------------------------------------------------------------------------------------------------
DEUTSCHE TELEKOM AG  -ADR    ADR      251566105     2,373    155,800  SH      SOLE                        155,800
------------------------------------------------------------------------------------------------------------------------------------
DIAGEO PLC  -ADR             ADR      25243Q205     2,706     39,300  SH      SOLE                         39,300
------------------------------------------------------------------------------------------------------------------------------------
DOW CHEMICAL                COMMON    260543103     2,479     78,000  SH      SOLE                         78,000
------------------------------------------------------------------------------------------------------------------------------------
DU PONT (E I) DE NEMOURS    COMMON    263534109     8,897    220,765  SH      SOLE                        220,765
------------------------------------------------------------------------------------------------------------------------------------
DYNCORP INTL INC            COMMON    26817C101     7,157    427,000  SH      SOLE                        427,000
------------------------------------------------------------------------------------------------------------------------------------
EMBARQ CORP                 COMMON    29078E105     2,761     68,100  SH      SOLE                         68,100
------------------------------------------------------------------------------------------------------------------------------------
EMS TECHNOLOGIES INC        COMMON    26873N108     8,661    388,200  SH      SOLE                        388,200
------------------------------------------------------------------------------------------------------------------------------------
ENBRIDGE INC                 ADR      29250N105    11,461    300,900  SH      SOLE                        300,900
------------------------------------------------------------------------------------------------------------------------------------
ENERSYS INC                 COMMON    29275Y102     8,400    426,200  SH      SOLE                        426,200
------------------------------------------------------------------------------------------------------------------------------------
ENGLOBAL CORP               COMMON    293306106     1,247     94,000  SH      SOLE                         94,000
------------------------------------------------------------------------------------------------------------------------------------
ENI SPA  -ADR                ADR      26874R108     2,520     47,600  SH      SOLE                         47,600
------------------------------------------------------------------------------------------------------------------------------------
ENTERPRISE PRODS PRTNER
-LP                         COMMON    293792107     2,812    109,100  SH      SOLE                        109,100
------------------------------------------------------------------------------------------------------------------------------------
EXIDE TECHNOLOGIES          COMMON    302051206       590     79,900  SH      SOLE                         79,900
------------------------------------------------------------------------------------------------------------------------------------
EXPRESS SCRIPTS INC         COMMON    302182100    10,792    146,200  SH      SOLE                        146,200
------------------------------------------------------------------------------------------------------------------------------------
FAIRFAX FINANCIAL HOLDINGS   ADR      303901102    12,582     38,300  SH      SOLE                         38,300
------------------------------------------------------------------------------------------------------------------------------------
FLOWERS FOODS INC           COMMON    343498101     1,386     47,200  SH      SOLE                         47,200
------------------------------------------------------------------------------------------------------------------------------------




Page 4 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

FLOWSERVE CORP              COMMON    34354P105    10,510    118,400  SH      SOLE                        118,400
------------------------------------------------------------------------------------------------------------------------------------
FLUOR CORP                  COMMON    343412102       802     14,400  SH      SOLE                         14,400
------------------------------------------------------------------------------------------------------------------------------------
FRANCE TELECOM  -ADR         ADR      35177Q105     2,672     95,400  SH      SOLE                         95,400
------------------------------------------------------------------------------------------------------------------------------------
FRESH DEL MONTE PRODUCE INC  ADR      Sedol
                                      2118707       6,860    309,000  SH      SOLE                        309,000
------------------------------------------------------------------------------------------------------------------------------------
GANNETT CO                  COMMON    364730101     1,610     95,200  SH      SOLE                         95,200
------------------------------------------------------------------------------------------------------------------------------------
GENERAL ELECTRIC CO.        COMMON    369604103     4,385    171,970  SH      SOLE                        171,970
------------------------------------------------------------------------------------------------------------------------------------
GENERAL MOTORS CORP         COMMON    370442105     3,319    351,225  SH      SOLE                        351,225
------------------------------------------------------------------------------------------------------------------------------------
GENERAL STEEL HOLDINGS INC   ADR      370853103       609     85,300  SH      SOLE                         85,300
------------------------------------------------------------------------------------------------------------------------------------
GERDAU AMERISTEEL CORP      COMMON    37373P105       683     69,400  SH      SOLE                         69,400
------------------------------------------------------------------------------------------------------------------------------------
GLAXOSMITHKLINE PLC  -ADR    ADR      37733W105     2,755     63,400  SH      SOLE                         63,400
------------------------------------------------------------------------------------------------------------------------------------
GREIF INC  -CL A            CLASS A   397624107     7,579    115,500  SH      SOLE                        115,500
------------------------------------------------------------------------------------------------------------------------------------
GULF ISLAND FABRICATION INC COMMON    402307102       944     27,400  SH      SOLE                         27,400
------------------------------------------------------------------------------------------------------------------------------------
HACKETT GROUP INC           COMMON    404609109     1,334    245,180  SH      SOLE                        245,180
------------------------------------------------------------------------------------------------------------------------------------
HANGER ORTHOPEDIC GRP       COMMON    41043F208     1,417     81,200  SH      SOLE                         81,200
------------------------------------------------------------------------------------------------------------------------------------
HANOVER INSURANCE GROUP INC COMMON    410867105     7,324    160,900  SH      SOLE                        160,900
------------------------------------------------------------------------------------------------------------------------------------
HASBRO INC                  COMMON    418056107     9,097    262,000  SH      SOLE                        262,000
------------------------------------------------------------------------------------------------------------------------------------
HAWAIIAN ELECTRIC INDS      COMMON    419870100     8,410    288,900  SH      SOLE                        288,900
------------------------------------------------------------------------------------------------------------------------------------
HESS CORP                   COMMON    42809H107       870     10,600  SH      SOLE                         10,600
------------------------------------------------------------------------------------------------------------------------------------
HOME DEPOT INC              COMMON    437076102     3,501    135,210  SH      SOLE                        135,210
------------------------------------------------------------------------------------------------------------------------------------
HSBC HOLDINGS PLC  -ADR      ADR      404280406     3,225     39,900  SH      SOLE                         39,900
------------------------------------------------------------------------------------------------------------------------------------
HUB GROUP INC  -CL A        CLASS A   443320106     7,398    196,500  SH      SOLE                        196,500
------------------------------------------------------------------------------------------------------------------------------------




Page 5 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

HUMANA INC                  COMMON    444859102     5,195    126,100  SH      SOLE                        126,100
------------------------------------------------------------------------------------------------------------------------------------
ING GROEP NV  -ADR           ADR      456837103     1,866     87,200  SH      SOLE                         87,200
------------------------------------------------------------------------------------------------------------------------------------
INNOPHOS HOLDINGS INC       COMMON    45774N108     1,022     41,900  SH      SOLE                         41,900
------------------------------------------------------------------------------------------------------------------------------------
INTEROIL CORP                ADR      460951106     1,251     45,500  SH      SOLE                         45,500
------------------------------------------------------------------------------------------------------------------------------------
J.P. MORGAN CHASE & COMPANY COMMON    46625H100     7,288    156,065  SH      SOLE                        156,065
------------------------------------------------------------------------------------------------------------------------------------
JACOBS ENGINEERING GROUP
INC                         COMMON    469814107     6,436    118,500  SH      SOLE                        118,500
------------------------------------------------------------------------------------------------------------------------------------
KB FINANCIAL GROUP, INC.     ADR      48241A105     2,138     46,800  SH      SOLE                         46,800
------------------------------------------------------------------------------------------------------------------------------------
KEYCORP                     COMMON    493267108     1,771    148,300  SH      SOLE                        148,300
------------------------------------------------------------------------------------------------------------------------------------
L-3 COMMUNICATIONS HLDGS
INC                         COMMON    502424104     9,881    100,500  SH      SOLE                        100,500
------------------------------------------------------------------------------------------------------------------------------------
LACLEDE GROUP INC           COMMON    505597104     1,610     33,200  SH      SOLE                         33,200
------------------------------------------------------------------------------------------------------------------------------------
LAUDER (ESTEE) COS INC
-CL A                       CLASS A   518439104     8,036    161,000  SH      SOLE                        161,000
------------------------------------------------------------------------------------------------------------------------------------
LENNOX INTERNATIONAL INC    COMMON    526107107     7,163    215,300  SH      SOLE                        215,300
------------------------------------------------------------------------------------------------------------------------------------
LG PHILIPS LCD CO LTD -ADR   ADR      50186V102     5,499    433,000  SH      SOLE                        433,000
------------------------------------------------------------------------------------------------------------------------------------
LIFEPOINT HOSPITALS INC     COMMON    53219L109     7,923    246,500  SH      SOLE                        246,500
------------------------------------------------------------------------------------------------------------------------------------
LLOYDS TSB GROUP PLC  -ADR   ADR      539439109     1,474     88,100  SH      SOLE                         88,100
------------------------------------------------------------------------------------------------------------------------------------
LSB INDUSTRIES INC          COMMON    502160104     6,016    434,400  SH      SOLE                        434,400
------------------------------------------------------------------------------------------------------------------------------------
MANTECH INTL CORP           COMMON    564563104     9,913    167,200  SH      SOLE                        167,200
------------------------------------------------------------------------------------------------------------------------------------
MARSHALL & ILSLEY CORP      COMMON    571837103     2,396    118,900  SH      SOLE                        118,900
------------------------------------------------------------------------------------------------------------------------------------
MASCO CORP                  COMMON    574599106     2,745    153,000  SH      SOLE                        153,000
------------------------------------------------------------------------------------------------------------------------------------
MASSEY ENERGY CO            COMMON    576206106    11,571    324,400  SH      SOLE                        324,400
------------------------------------------------------------------------------------------------------------------------------------
MATTEL INC                  COMMON    577081102     3,069    170,100  SH      SOLE                        170,100
------------------------------------------------------------------------------------------------------------------------------------




Page 6 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

MCKESSON CORP               COMMON    58155Q103     8,572    159,300  SH      SOLE                        159,300
------------------------------------------------------------------------------------------------------------------------------------
MDU RESOURCES GROUP INC     COMMON    552690109     1,114     38,400  SH      SOLE                         38,400
------------------------------------------------------------------------------------------------------------------------------------
MEDCO HEALTH SOLUTIONS INC  COMMON    58405U102     9,185    204,100  SH      SOLE                        204,100
------------------------------------------------------------------------------------------------------------------------------------
MERCK & CO., INC.           COMMON    589331107     4,122    130,600  SH      SOLE                        130,600
------------------------------------------------------------------------------------------------------------------------------------
METALICO INC                COMMON    591176102       482     81,720  SH      SOLE                         81,720
------------------------------------------------------------------------------------------------------------------------------------
MOLINA HEALTHCARE INC       COMMON    60855R100     8,519    274,800  SH      SOLE                        274,800
------------------------------------------------------------------------------------------------------------------------------------
MULTI-FINELINE ELECTRON INC COMMON    62541B101       716     48,400  SH      SOLE                         48,400
------------------------------------------------------------------------------------------------------------------------------------
MURPHY OIL CORP             COMMON    626717102       879     13,700  SH      SOLE                         13,700
------------------------------------------------------------------------------------------------------------------------------------
MWI VETERINARY SUPPLY       COMMON    55402X105    10,282    261,700  SH      SOLE                        261,700
------------------------------------------------------------------------------------------------------------------------------------
NATIONAL CITY CORP          COMMON    635405103       354    202,300  SH      SOLE                        202,300
------------------------------------------------------------------------------------------------------------------------------------
NCI INC                     COMMON    62886K104     1,666     58,500  SH      SOLE                         58,500
------------------------------------------------------------------------------------------------------------------------------------
NORTHWEST NATURAL GAS CO    COMMON    667655104    11,149    214,400  SH      SOLE                        214,400
------------------------------------------------------------------------------------------------------------------------------------
ODYSSEY RE HOLDINGS CORP    COMMON    67612W108     8,935    204,000  SH      SOLE                        204,000
------------------------------------------------------------------------------------------------------------------------------------
OIL STATES INTL INC         COMMON    678026105       746     21,100  SH      SOLE                         21,100
------------------------------------------------------------------------------------------------------------------------------------
OLYMPIC STEEL INC           COMMON    68162K106       519     17,600  SH      SOLE                         17,600
------------------------------------------------------------------------------------------------------------------------------------
OTTER TAIL CORP             COMMON    689648103     1,060     34,500  SH      SOLE                         34,500
------------------------------------------------------------------------------------------------------------------------------------
OVERSTOCK.COM INC           COMMON    690370101     1,022     51,600  SH      SOLE                         51,600
------------------------------------------------------------------------------------------------------------------------------------
OWENS & MINOR INC           COMMON    690732102     8,269    170,500  SH      SOLE                        170,500
------------------------------------------------------------------------------------------------------------------------------------
OWENS-ILLINOIS INC          COMMON    690768403     6,888    234,300  SH      SOLE                        234,300
------------------------------------------------------------------------------------------------------------------------------------
PANERA BREAD CO             COMMON    69840W108     7,381    145,000  SH      SOLE                        145,000
------------------------------------------------------------------------------------------------------------------------------------
PENTAIR INC                 COMMON    709631105     7,187    207,900  SH      SOLE                        207,900
------------------------------------------------------------------------------------------------------------------------------------




Page 7 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

PEPSI BOTTLING GROUP INC    COMMON    713409100     7,520    257,800  SH      SOLE                        257,800
------------------------------------------------------------------------------------------------------------------------------------
PEPSIAMERICAS INC           COMMON    71343P200     6,684    322,600  SH      SOLE                        322,600
------------------------------------------------------------------------------------------------------------------------------------
PFIZER INC                  COMMON    717081103     8,497    460,790  SH      SOLE                        460,790
------------------------------------------------------------------------------------------------------------------------------------
PHI INC                     COMMON    69336T205     1,230     33,300  SH      SOLE                         33,300
------------------------------------------------------------------------------------------------------------------------------------
PHILIP MORRIS INTERNATIONAL COMMON    718172109     4,417     91,820  SH      SOLE                         91,820
------------------------------------------------------------------------------------------------------------------------------------
PIEDMONT NATURAL GAS CO     COMMON    720186105     7,888    246,800  SH      SOLE                        246,800
------------------------------------------------------------------------------------------------------------------------------------
PITNEY BOWES INC            COMMON    724479100     3,010     90,500  SH      SOLE                         90,500
------------------------------------------------------------------------------------------------------------------------------------
PNC FINANCIAL SVCS GROUP
INC                         COMMON    693475105     3,877     51,900  SH      SOLE                         51,900
------------------------------------------------------------------------------------------------------------------------------------
PRICESMART INC              COMMON    741511109     5,854    349,700  SH      SOLE                        349,700
------------------------------------------------------------------------------------------------------------------------------------
QWEST COMMUNICATION INTL
INC                         COMMON    749121109     1,549    479,600  SH      SOLE                        479,600
------------------------------------------------------------------------------------------------------------------------------------
RALCORP HOLDINGS INC        COMMON    751028101     8,238    122,200  SH      SOLE                        122,200
------------------------------------------------------------------------------------------------------------------------------------
RAYMOND JAMES FINANCIAL
CORP                        COMMON    754730109     7,074    214,500  SH      SOLE                        214,500
------------------------------------------------------------------------------------------------------------------------------------
REGIONS FINL CORP           COMMON    7591EP100     1,345    140,100  SH      SOLE                        140,100
------------------------------------------------------------------------------------------------------------------------------------
REHABCARE GROUP INC         COMMON    759148109     8,042    444,300  SH      SOLE                        444,300
------------------------------------------------------------------------------------------------------------------------------------
RELIANCE STEEL & ALUMINUM
CO                          COMMON    759509102       661     17,400  SH      SOLE                         17,400
------------------------------------------------------------------------------------------------------------------------------------
RENT-A-CENTER INC           COMMON    76009N100     7,595    340,900  SH      SOLE                        340,900
------------------------------------------------------------------------------------------------------------------------------------
REYNOLDS AMERICAN INC       COMMON    761713106     2,441     50,200  SH      SOLE                         50,200
------------------------------------------------------------------------------------------------------------------------------------
ROSS STORES INC             COMMON    778296103     8,065    219,100  SH      SOLE                        219,100
------------------------------------------------------------------------------------------------------------------------------------
RWE AG VORMA  -ADR           ADR      74975E303     7,067     73,500  SH      SOLE                         73,500
------------------------------------------------------------------------------------------------------------------------------------
RYDER SYSTEM INC            COMMON    783549108     1,203     19,400  SH      SOLE                         19,400
------------------------------------------------------------------------------------------------------------------------------------
SALLY BEAUTY HOLDINGS INC   COMMON    79546E104     7,070    822,100  SH      SOLE                        822,100
------------------------------------------------------------------------------------------------------------------------------------




Page 8 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
------------------------------------------------------------------------------------------------------------------------------------
                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
------------------------------------------------------------------------------------------------------------------------------------
                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                      

SASOL LTD  -ADR              ADR      803866300     3,038     71,500  SH      SOLE                         71,500
------------------------------------------------------------------------------------------------------------------------------------
SCHNITZER STEEL INDS  -CL A CLASS A   806882106       459     11,700  SH      SOLE                         11,700
------------------------------------------------------------------------------------------------------------------------------------
SIEMENS AG  -ADR             ADR      826197501     6,995     74,500  SH      SOLE                         74,500
------------------------------------------------------------------------------------------------------------------------------------
SMITH (A O) CORP            COMMON    831865209     7,211    184,000  SH      SOLE                        184,000
------------------------------------------------------------------------------------------------------------------------------------
SNAP-ON INC                 COMMON    833034101     7,393    140,400  SH      SOLE                        140,400
------------------------------------------------------------------------------------------------------------------------------------
SONY CORP  -ADR              ADR      835699307     5,868    190,100  SH      SOLE                        190,100
------------------------------------------------------------------------------------------------------------------------------------
SOUTHERN COPPER CORP        COMMON    84265V105     1,830     95,900  SH      SOLE                         95,900
------------------------------------------------------------------------------------------------------------------------------------
SPX CORP                    COMMON    784635104       785     10,200  SH      SOLE                         10,200
------------------------------------------------------------------------------------------------------------------------------------
STANLEY INC                 COMMON    854532108    13,402    363,100  SH      SOLE                        363,100
------------------------------------------------------------------------------------------------------------------------------------
STATOILHYDRO ASA  -ADR       ADR      85771P102       852     35,800  SH      SOLE                         35,800
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STEEL DYNAMICS INC          COMMON    858119100     7,342    429,600  SH      SOLE                        429,600
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STEPAN CO                   COMMON    858586100     1,599     29,300  SH      SOLE                         29,300
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STIFEL FINANCIAL CORP       COMMON    860630102     8,029    160,900  SH      SOLE                        160,900
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STONERIDGE INC              COMMON    86183P102       883     78,500  SH      SOLE                         78,500
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SUN HEALTHCARE GROUP INC    COMMON    866933401     8,485    578,800  SH      SOLE                        578,800
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TAIWAN SEMICONDUCTOR  -ADR   ADR      874039100     3,280    350,100  SH      SOLE                        350,100
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TECO ENERGY INC             COMMON    872375100       980     62,300  SH      SOLE                         62,300
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TELE NORTE LESTE  -ADR       ADR      879246106     7,440    426,100  SH      SOLE                        426,100
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TELEDYNE TECHNOLOGIES INC   COMMON    879360105    19,612    343,100  SH      SOLE                        343,100
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TENET HEALTHCARE CORP       COMMON    88033G100     7,274  1,310,700  SH      SOLE                      1,310,700
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TETRA TECH INC              COMMON    88162G103     6,968    289,600  SH      SOLE                        289,600
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Page 9 of 9                                                           09/30/2008


                                                     FORM 13F INFORMATION TABLE

                                         Name of Reporting Manager: Hennessy Advisors, Inc.

                                                                                                    Column
      Column 1:            Column 2:    Column 3:  Column 4:    Column 5:              Column 6:         7:         Column 8:
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                            Title                   Market
                             of         CUSIP       Value       Shares or                              Other
    Name of Issuer          Class       Number    (x$1,000)  Principal Amount  Investment Discretion   Mgrs.    Voting Authority
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                                                                     SH/ Put/       Shared  Shared
                                                                     PRN Call Sole Defined  Other          Sole    Shared     None
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TOTAL SA  -ADR               ADR      89151E109     7,603    125,300  SH      SOLE                        125,300
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U S BANCORP                 COMMON    902973304     3,706    102,900  SH      SOLE                        102,900
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UTSTARCOM INC               COMMON    918076100       825    244,800  SH      SOLE                        244,800
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VECTREN CORP                COMMON    92240G101     1,195     42,900  SH      SOLE                         42,900
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VERIZON COMMUNICATIONS      COMMON    92343V104     8,071    251,510  SH      SOLE                        251,510
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WACHOVIA CORP               COMMON    929903102       301     86,100  SH      SOLE                         86,100
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WELLS FARGO & CO            COMMON    949746101     4,196    111,800  SH      SOLE                        111,800
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WESTERN DIGITAL CORP        COMMON    958102105       827     38,800  SH      SOLE                         38,800
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WILLBROS GROUP INC           ADR      969199108       811     30,600  SH      SOLE                         30,600
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                    TOTAL                         872,887
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