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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:   March 31, 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                 April 21, 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:                $1,057,102
                                                 ----------------------
                                                       (thousands)



List of Other Included Managers:  NONE







Page 1 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
1-800-FLOWERS.COM           COMMON    68243Q106      1,860   218,600  SH      SOLE                           218,600
------------------------------------------------------------------------------------------------------------------------------------
A T & T INC                 COMMON    00206R102     10,585   276,380  SH      SOLE                           276,380
------------------------------------------------------------------------------------------------------------------------------------
AEGON NV                     ADR      007924103      2,932   200,300  SH      SOLE                           200,300
------------------------------------------------------------------------------------------------------------------------------------
AETNA INC                   COMMON    00817Y108      9,331   221,700  SH      SOLE                           221,700
------------------------------------------------------------------------------------------------------------------------------------
AGCO CORP                   COMMON    001084102     12,144   202,800  SH      SOLE                           202,800
------------------------------------------------------------------------------------------------------------------------------------
AIRGAS INC                  COMMON    009363102      5,497   120,900  SH      SOLE                           120,900
------------------------------------------------------------------------------------------------------------------------------------
AK STEEL HOLDING CORP       COMMON    001547108     10,291   189,100  SH      SOLE                           189,100
------------------------------------------------------------------------------------------------------------------------------------
ALLIANCE IMAGING INC        COMMON    018606202     11,574 1,345,800  SH      SOLE                         1,345,800
------------------------------------------------------------------------------------------------------------------------------------
ALLIANT TECHSYSTEMS INC     COMMON    018804104      6,119    59,100  SH      SOLE                            59,100
------------------------------------------------------------------------------------------------------------------------------------
ALLIED IRISH BANKS  -ADR     ADR      019228402      3,329    77,100  SH      SOLE                            77,100
------------------------------------------------------------------------------------------------------------------------------------
ALPHA NATURAL RESOURCES INC COMMON    02076X102     30,569   703,700  SH      SOLE                           703,700
------------------------------------------------------------------------------------------------------------------------------------
ALTRIA GROUP INC            COMMON    02209S103      3,076   138,545  SH      SOLE                           138,545
------------------------------------------------------------------------------------------------------------------------------------
AMKOR TECHNOLOGY INC        COMMON    031652100      1,571   146,800  SH      SOLE                           146,800
------------------------------------------------------------------------------------------------------------------------------------
ANIXTER INTL INC            COMMON    035290105      4,963    77,500  SH      SOLE                            77,500
------------------------------------------------------------------------------------------------------------------------------------
AON CORP                    COMMON    037389103     11,590   288,300  SH      SOLE                           288,300
------------------------------------------------------------------------------------------------------------------------------------
ARCELOR MITTAL -ADR          ADR      03938L104      2,691    32,900  SH      SOLE                            32,900
------------------------------------------------------------------------------------------------------------------------------------
ARCHER-DANIELS-MIDLAND CO   COMMON    039483102     12,113   294,300  SH      SOLE                           294,300
------------------------------------------------------------------------------------------------------------------------------------
ARROW ELECTRONICS INC       COMMON    042735100      5,209   154,800  SH      SOLE                           154,800
------------------------------------------------------------------------------------------------------------------------------------
ASSURANT INC                COMMON    04621X108     11,989   197,000  SH      SOLE                           197,000
------------------------------------------------------------------------------------------------------------------------------------
ASTEC INDUSTRIES INC        COMMON    046224101      1,756    45,300  SH      SOLE                            45,300
------------------------------------------------------------------------------------------------------------------------------------
AVNET INC                   COMMON    053807103      1,617    49,400  SH      SOLE                            49,400
------------------------------------------------------------------------------------------------------------------------------------




Page 2 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
AZZ INC                     COMMON    002474104     13,456   378,200  SH      SOLE                           378,200
------------------------------------------------------------------------------------------------------------------------------------
BANK of AMERICA CORP        COMMON    060505104      4,013   105,850  SH      SOLE                           105,850
------------------------------------------------------------------------------------------------------------------------------------
BARCLAYS PLC/ENGLAND  -ADR   ADR      06738E204      2,947    81,400  SH      SOLE                            81,400
------------------------------------------------------------------------------------------------------------------------------------
BARNES GROUP INC            COMMON    067806109      5,809   253,100  SH      SOLE                           253,100
------------------------------------------------------------------------------------------------------------------------------------
BASF AG  -ADR                ADR      055262505     11,939    88,500  SH      SOLE                            88,500
------------------------------------------------------------------------------------------------------------------------------------
BB&T CORP                   COMMON    054937107      3,402   106,100  SH      SOLE                           106,100
------------------------------------------------------------------------------------------------------------------------------------
BP PLC  -ADS                 ADR      055622104      2,832    46,700  SH      SOLE                            46,700
------------------------------------------------------------------------------------------------------------------------------------
BRISTOL MYERS SQUIBB        COMMON    110122108      2,631   123,500  SH      SOLE                           123,500
------------------------------------------------------------------------------------------------------------------------------------
BRISTOW GROUP INC           COMMON    110394103     12,473   232,400  SH      SOLE                           232,400
------------------------------------------------------------------------------------------------------------------------------------
BRUSH ENGINEERED MATERIALS  COMMON    117421107      3,019   117,600  SH      SOLE                           117,600
------------------------------------------------------------------------------------------------------------------------------------
BT GROUP PLC  -ADR           ADR      05577E101      2,616    60,700  SH      SOLE                            60,700
------------------------------------------------------------------------------------------------------------------------------------
BUCKEYE TECHNOLOGIES INC    COMMON    118255108      1,567   140,400  SH      SOLE                           140,400
------------------------------------------------------------------------------------------------------------------------------------
BUNGE LTD                   COMMON    Sedol
                                      2788713        8,966   103,200  SH      SOLE                           103,200
------------------------------------------------------------------------------------------------------------------------------------
CAL-MAINE FOODS INC         COMMON    128030202      3,572   107,000  SH      SOLE                           107,000
------------------------------------------------------------------------------------------------------------------------------------
CARNIVAL CORP/PLC (USA)     COMMON    143658300      3,117    77,000  SH      SOLE                            77,000
------------------------------------------------------------------------------------------------------------------------------------
CBIZ INC                    COMMON    124805102     11,606 1,429,300  SH      SOLE                         1,429,300
------------------------------------------------------------------------------------------------------------------------------------
CBS CORP                    COMMON    124857202      2,928   132,600  SH      SOLE                           132,600
------------------------------------------------------------------------------------------------------------------------------------
CELANESE CORP               COMMON    150870103      2,261    57,900  SH      SOLE                            57,900
------------------------------------------------------------------------------------------------------------------------------------
CHART INDUSTRIES INC        COMMON    16115Q308      2,521    74,500  SH      SOLE                            74,500
------------------------------------------------------------------------------------------------------------------------------------
CHICAGO BRIDGE & IRON CO     ADR      167250109      9,622   245,200  SH      SOLE                           245,200
------------------------------------------------------------------------------------------------------------------------------------
CHUNGHWA TELECOM CO  -ADR    ADR      17133Q304      4,392   168,809  SH      SOLE                           168,809
------------------------------------------------------------------------------------------------------------------------------------




Page 3 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
CIGNA CORP                  COMMON    125509109      9,457   233,100  SH      SOLE                           233,100
------------------------------------------------------------------------------------------------------------------------------------
CIT GROUP INC               COMMON    125581108      1,660   140,100  SH      SOLE                           140,100
------------------------------------------------------------------------------------------------------------------------------------
CITIGROUP INC               COMMON    172967101      6,483   302,655  SH      SOLE                           302,655
------------------------------------------------------------------------------------------------------------------------------------
CNH GLOBAL NV                ADR      sedol
                                      2534778        1,972    37,900  SH      SOLE                            37,900
------------------------------------------------------------------------------------------------------------------------------------
COCA-COLA FEMSA DE C V
-ADR                         ADR      191241108     15,541   275,900  SH      SOLE                           275,900
------------------------------------------------------------------------------------------------------------------------------------
CONSTELLATION ENERGY GRP
INC                         COMMON    210371100     10,945   124,000  SH      SOLE                           124,000
------------------------------------------------------------------------------------------------------------------------------------
CORN PRODUCTS INTL INC      COMMON    219023108      5,088   137,000  SH      SOLE                           137,000
------------------------------------------------------------------------------------------------------------------------------------
COSTCO WHOLESALE CORP       COMMON    22160K105     12,201   187,800  SH      SOLE                           187,800
------------------------------------------------------------------------------------------------------------------------------------
COUNTRYWIDE FINANCIAL CORP  COMMON    222372104      1,945   353,700  SH      SOLE                           353,700
------------------------------------------------------------------------------------------------------------------------------------
CPI CORP                    COMMON    125902106        587    34,000  SH      SOLE                            34,000
------------------------------------------------------------------------------------------------------------------------------------
CUMMINS INC                 COMMON    231021106      1,746    37,300  SH      SOLE                            37,300
------------------------------------------------------------------------------------------------------------------------------------
DEUTSCHE TELEKOM AG  -ADR    ADR      251566105      2,663   160,600  SH      SOLE                           160,600
------------------------------------------------------------------------------------------------------------------------------------
DIAGEO PLC  -ADR             ADR      25243Q205      3,293    40,500  SH      SOLE                            40,500
------------------------------------------------------------------------------------------------------------------------------------
DICKS SPORTING GOODS INC    COMMON    253393102      5,187   193,700  SH      SOLE                           193,700
------------------------------------------------------------------------------------------------------------------------------------
DOW CHEMICAL                COMMON    260543103      2,963    80,400  SH      SOLE                            80,400
------------------------------------------------------------------------------------------------------------------------------------
DU PONT (E I) DE NEMOURS    COMMON    263534109     10,792   230,805  SH      SOLE                           230,805
------------------------------------------------------------------------------------------------------------------------------------
DYNCORP INTL INC            COMMON    26817C101     10,378   622,200  SH      SOLE                           622,200
------------------------------------------------------------------------------------------------------------------------------------
EMBARQ CORP                 COMMON    29078E105      2,815    70,200  SH      SOLE                            70,200
------------------------------------------------------------------------------------------------------------------------------------
EMERGENCY MEDICAL SVCS CORP COMMON    29100P102      1,247    50,500  SH      SOLE                            50,500
------------------------------------------------------------------------------------------------------------------------------------
EMS TECHNOLOGIES INC        COMMON    26873N108     12,883   474,700  SH      SOLE                           474,700
------------------------------------------------------------------------------------------------------------------------------------
ENBRIDGE INC                 ADR      29250N105     13,583   330,000  SH      SOLE                           330,000
------------------------------------------------------------------------------------------------------------------------------------




Page 4 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
ENERSYS INC                 COMMON    29275Y102     11,321   473,300  SH      SOLE                           473,300
------------------------------------------------------------------------------------------------------------------------------------
ENI SPA  -ADR                ADR      26874R108      3,344    49,100  SH      SOLE                            49,100
------------------------------------------------------------------------------------------------------------------------------------
ENTERPRISE PRODS PRTNER
-LP                         COMMON    293792107      3,341   112,500  SH      SOLE                           112,500
------------------------------------------------------------------------------------------------------------------------------------
ESTERLINE TECHNOLOGIES CORP COMMON    297425100      6,105   121,200  SH      SOLE                           121,200
------------------------------------------------------------------------------------------------------------------------------------
EXPRESS SCRIPTS INC         COMMON    302182100     11,494   178,700  SH      SOLE                           178,700
------------------------------------------------------------------------------------------------------------------------------------
FAIRFAX FINANCIAL HOLDINGS   ADR      303901102     13,465    46,900  SH      SOLE                            46,900
------------------------------------------------------------------------------------------------------------------------------------
FIAT SPA  -ADR               ADR      315621888      1,585    67,900  SH      SOLE                            67,900
------------------------------------------------------------------------------------------------------------------------------------
FLOWSERVE CORP              COMMON    34354P105     23,788   227,900  SH      SOLE                           227,900
------------------------------------------------------------------------------------------------------------------------------------
FRANCE TELECOM  -ADR         ADR      35177Q105      3,304    98,400  SH      SOLE                            98,400
------------------------------------------------------------------------------------------------------------------------------------
FRESH DEL MONTE PRODUCE INC  ADR      Sedol
                                      2118707       13,756   377,900  SH      SOLE                           377,900
------------------------------------------------------------------------------------------------------------------------------------
GAMESTOP CORP               COMMON    36467W109      2,668    51,600  SH      SOLE                            51,600
------------------------------------------------------------------------------------------------------------------------------------
GANNETT CO                  COMMON    364730101      2,853    98,200  SH      SOLE                            98,200
------------------------------------------------------------------------------------------------------------------------------------
GENERAL CABLE CORP/DE       COMMON    369300108      1,536    26,000  SH      SOLE                            26,000
------------------------------------------------------------------------------------------------------------------------------------
GENERAL ELECTRIC CO.        COMMON    369604103      6,226   168,220  SH      SOLE                           168,220
------------------------------------------------------------------------------------------------------------------------------------
GENERAL MOTORS CORP         COMMON    370442105      6,614   347,185  SH      SOLE                           347,185
------------------------------------------------------------------------------------------------------------------------------------
GENESIS ENERGY  -LP         COMMON    371927104      1,145    60,800  SH      SOLE                            60,800
------------------------------------------------------------------------------------------------------------------------------------
GLAXOSMITHKLINE PLC  -ADR    ADR      37733W105      2,775    65,400  SH      SOLE                            65,400
------------------------------------------------------------------------------------------------------------------------------------
GOODRICH CORP               COMMON    382388106      5,412    94,100  SH      SOLE                            94,100
------------------------------------------------------------------------------------------------------------------------------------
GRACE (W R) & CO            COMMON    38388F108      4,899   214,700  SH      SOLE                           214,700
------------------------------------------------------------------------------------------------------------------------------------
HARDINGE INC                COMMON    412324303        780    56,700  SH      SOLE                            56,700
------------------------------------------------------------------------------------------------------------------------------------
HARSCO CORP                 COMMON    415864107      6,009   108,500  SH      SOLE                           108,500
------------------------------------------------------------------------------------------------------------------------------------




Page 5 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
HEWITT ASSOCIATES INC       COMMON    42822Q100      7,349   184,800  SH      SOLE                           184,800
------------------------------------------------------------------------------------------------------------------------------------
HOME DEPOT INC              COMMON    437076102      3,348   119,710  SH      SOLE                           119,710
------------------------------------------------------------------------------------------------------------------------------------
HORIZON LINES INC           COMMON    44044K101      1,131    60,800  SH      SOLE                            60,800
------------------------------------------------------------------------------------------------------------------------------------
HSBC HOLDINGS PLC  -ADR      ADR      404280406      3,383    41,100  SH      SOLE                            41,100
------------------------------------------------------------------------------------------------------------------------------------
HUDSON HIGHLAND GROUP INC   COMMON    443792106      1,001   118,200  SH      SOLE                           118,200
------------------------------------------------------------------------------------------------------------------------------------
HUMANA INC                  COMMON    444859102      6,917   154,200  SH      SOLE                           154,200
------------------------------------------------------------------------------------------------------------------------------------
ICO INC                     COMMON    449293109      1,339   192,900  SH      SOLE                           192,900
------------------------------------------------------------------------------------------------------------------------------------
ING GROEP NV  -ADR           ADR      456837103      3,360    89,900  SH      SOLE                            89,900
------------------------------------------------------------------------------------------------------------------------------------
INNOSPEC INC                 ADR      45768S105      1,509    71,200  SH      SOLE                            71,200
------------------------------------------------------------------------------------------------------------------------------------
INTEGRATED ELECTRICAL SVCS  COMMON    45811E301      1,040    66,200  SH      SOLE                            66,200
------------------------------------------------------------------------------------------------------------------------------------
IOMEGA CORP                 COMMON    462030305      1,432   401,100  SH      SOLE                           401,100
------------------------------------------------------------------------------------------------------------------------------------
J.P. MORGAN CHASE & COMPANY COMMON    46625H100      6,777   157,780  SH      SOLE                           157,780
------------------------------------------------------------------------------------------------------------------------------------
JACOBS ENGINEERING GROUP
INC                         COMMON    469814107     10,663   144,900  SH      SOLE                           144,900
------------------------------------------------------------------------------------------------------------------------------------
KAMAN CORP                  COMMON    483548103      1,796    63,500  SH      SOLE                            63,500
------------------------------------------------------------------------------------------------------------------------------------
KEYCORP                     COMMON    493267108      3,356   152,900  SH      SOLE                           152,900
------------------------------------------------------------------------------------------------------------------------------------
KOOKMIN BANK  -ADR           ADR      50049M109      2,707    48,300  SH      SOLE                            48,300
------------------------------------------------------------------------------------------------------------------------------------
L-3 COMMUNICATIONS HLDGS
INC                         COMMON    502424104     13,427   122,800  SH      SOLE                           122,800
------------------------------------------------------------------------------------------------------------------------------------
LG PHILIPS LCD CO LTD -ADR   ADR      50186V102     11,824   529,500  SH      SOLE                           529,500
------------------------------------------------------------------------------------------------------------------------------------
LLOYDS TSB GROUP PLC  -ADR   ADR      539439109      3,260    90,800  SH      SOLE                            90,800
------------------------------------------------------------------------------------------------------------------------------------
LSB INDUSTRIES INC          COMMON    502160104      9,316   632,000  SH      SOLE                           632,000
------------------------------------------------------------------------------------------------------------------------------------
LUBRIZOL CORP               COMMON    549271104      5,251    94,600  SH      SOLE                            94,600
------------------------------------------------------------------------------------------------------------------------------------




Page 6 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
MARSHALL & ILSLEY CORP      COMMON    571837103      2,844   122,600  SH      SOLE                           122,600
------------------------------------------------------------------------------------------------------------------------------------
MASCO CORP                  COMMON    574599106      3,129   157,800  SH      SOLE                           157,800
------------------------------------------------------------------------------------------------------------------------------------
MASSEY ENERGY CO            COMMON    576206106     14,476   396,600  SH      SOLE                           396,600
------------------------------------------------------------------------------------------------------------------------------------
MATRIX SERVICE COMPANY      COMMON    576853105      1,496    87,100  SH      SOLE                            87,100
------------------------------------------------------------------------------------------------------------------------------------
MATTEL INC                  COMMON    577081102      3,490   175,400  SH      SOLE                           175,400
------------------------------------------------------------------------------------------------------------------------------------
MCKESSON CORP               COMMON    58155Q103     10,202   194,800  SH      SOLE                           194,800
------------------------------------------------------------------------------------------------------------------------------------
MEDCO HEALTH SOLUTIONS INC  COMMON    58405U102     10,930   249,600  SH      SOLE                           249,600
------------------------------------------------------------------------------------------------------------------------------------
MERCK & CO., INC.           COMMON    589331107      4,831   127,300  SH      SOLE                           127,300
------------------------------------------------------------------------------------------------------------------------------------
METHODE ELECTRONICS  -CL A  CLASS A   591520200      1,416   121,100  SH      SOLE                           121,100
------------------------------------------------------------------------------------------------------------------------------------
MFRI INC                    COMMON    552721102      1,219    75,800  SH      SOLE                            75,800
------------------------------------------------------------------------------------------------------------------------------------
MIVA INC                    COMMON    55311R108        515   308,000  SH      SOLE                           308,000
------------------------------------------------------------------------------------------------------------------------------------
MOLINA HEALTHCARE INC       COMMON    60855R100      8,205   336,000  SH      SOLE                           336,000
------------------------------------------------------------------------------------------------------------------------------------
MWI VETERINARY SUPPLY       COMMON    55402X105     11,283   320,000  SH      SOLE                           320,000
------------------------------------------------------------------------------------------------------------------------------------
NALCO HOLDING CO            COMMON    62985Q101      4,545   214,900  SH      SOLE                           214,900
------------------------------------------------------------------------------------------------------------------------------------
NATIONAL CITY CORP          COMMON    635405103      2,076   208,600  SH      SOLE                           208,600
------------------------------------------------------------------------------------------------------------------------------------
NEXSTAR BROADCASTING GROUP  COMMON    65336K103      1,010   171,200  SH      SOLE                           171,200
------------------------------------------------------------------------------------------------------------------------------------
NORTHWEST NATURAL GAS CO    COMMON    667655104     11,390   262,200  SH      SOLE                           262,200
------------------------------------------------------------------------------------------------------------------------------------
OIL STATES INTL INC         COMMON    678026105      6,273   140,000  SH      SOLE                           140,000
------------------------------------------------------------------------------------------------------------------------------------
OSHKOSH TRUCK CORP          COMMON    688239201      3,849   106,100  SH      SOLE                           106,100
------------------------------------------------------------------------------------------------------------------------------------
OWENS-ILLINOIS INC          COMMON    690768403     27,984   495,900  SH      SOLE                           495,900
------------------------------------------------------------------------------------------------------------------------------------
PAREXEL INTERNATIONAL CORP  COMMON    699462107      7,579   290,400  SH      SOLE                           290,400
------------------------------------------------------------------------------------------------------------------------------------




Page 7 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
PENFORD CORP                COMMON    707051108      1,295    59,600  SH      SOLE                            59,600
------------------------------------------------------------------------------------------------------------------------------------
PEPSI BOTTLING GROUP INC    COMMON    713409100     10,692   315,300  SH      SOLE                           315,300
------------------------------------------------------------------------------------------------------------------------------------
PEPSIAMERICAS INC           COMMON    71343P200     10,072   394,500  SH      SOLE                           394,500
------------------------------------------------------------------------------------------------------------------------------------
PERINI CORP                 COMMON    713839108      1,091    30,100  SH      SOLE                            30,100
------------------------------------------------------------------------------------------------------------------------------------
PFIZER INC                  COMMON    717081103      9,566   457,030  SH      SOLE                           457,030
------------------------------------------------------------------------------------------------------------------------------------
PHILIP MORRIS INTERNATIONAL COMMON    718172109      7,008   138,545  SH      SOLE                           138,545
------------------------------------------------------------------------------------------------------------------------------------
PINNACLE AIRLINES CORP      COMMON    723443107        993   113,800  SH      SOLE                           113,800
------------------------------------------------------------------------------------------------------------------------------------
PITNEY BOWES INC            COMMON    724479100      3,267    93,300  SH      SOLE                            93,300
------------------------------------------------------------------------------------------------------------------------------------
PNC FINANCIAL SVCS GROUP
INC                         COMMON    693475105      3,508    53,500  SH      SOLE                            53,500
------------------------------------------------------------------------------------------------------------------------------------
PRICESMART INC              COMMON    741511109     14,243   514,000  SH      SOLE                           514,000
------------------------------------------------------------------------------------------------------------------------------------
QWEST COMMUNICATION INTL
INC                         COMMON    749121109      2,240   494,500  SH      SOLE                           494,500
------------------------------------------------------------------------------------------------------------------------------------
REGIONS FINL CORP           COMMON    7591EP100      2,852   144,400  SH      SOLE                           144,400
------------------------------------------------------------------------------------------------------------------------------------
REHABCARE GROUP INC         COMMON    759148109      8,106   540,400  SH      SOLE                           540,400
------------------------------------------------------------------------------------------------------------------------------------
RELIANT ENERGY INC          COMMON    75952B105      1,717    72,600  SH      SOLE                            72,600
------------------------------------------------------------------------------------------------------------------------------------
REYNOLDS AMERICAN INC       COMMON    761713106      3,058    51,800  SH      SOLE                            51,800
------------------------------------------------------------------------------------------------------------------------------------
ROBBINS & MYERS INC         COMMON    770196103      2,423    74,200  SH      SOLE                            74,200
------------------------------------------------------------------------------------------------------------------------------------
RWE AG VORMA  -ADR           ADR      74975E303     11,017    89,900  SH      SOLE                            89,900
------------------------------------------------------------------------------------------------------------------------------------
SASOL LTD  -ADR              ADR      803866300      3,566    73,700  SH      SOLE                            73,700
------------------------------------------------------------------------------------------------------------------------------------
SCHNITZER STEEL INDS
-CL A                       CLASS A   806882106      6,569    92,500  SH      SOLE                            92,500
------------------------------------------------------------------------------------------------------------------------------------
SIEMENS AG  -ADR             ADR      826197501      9,924    91,100  SH      SOLE                            91,100
------------------------------------------------------------------------------------------------------------------------------------
SONY CORP  -ADR              ADR      835699307      9,316   232,500  SH      SOLE                           232,500
------------------------------------------------------------------------------------------------------------------------------------




Page 8 of 9                                                           03/31/2008


                                                     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
------------------------------------------------------------------------------------------------------------------------------------
                                                                                      
SOUTHERN COPPER CORP        COMMON    84265V105      3,426    33,000  SH      SOLE                            33,000
------------------------------------------------------------------------------------------------------------------------------------
SPX CORP                    COMMON    784635104      7,291    69,500  SH      SOLE                            69,500
------------------------------------------------------------------------------------------------------------------------------------
STANLEY INC                 COMMON    854532108     11,643   395,200  SH      SOLE                           395,200
------------------------------------------------------------------------------------------------------------------------------------
STEEL DYNAMICS INC          COMMON    858119100     15,972   483,400  SH      SOLE                           483,400
------------------------------------------------------------------------------------------------------------------------------------
SUN HEALTHCARE GROUP INC    COMMON    866933401      9,299   707,700  SH      SOLE                           707,700
------------------------------------------------------------------------------------------------------------------------------------
TAIWAN SEMICONDUCTOR  -ADR   ADR      874039100      3,689   359,200  SH      SOLE                           359,200
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TELE NORTE LESTE  -ADR       ADR      879246106     13,830   521,100  SH      SOLE                           521,100
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TELEDYNE TECHNOLOGIES INC   COMMON    879360105     11,778   250,600  SH      SOLE                           250,600
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TEREX CORP                  COMMON    880779103      1,488    23,800  SH      SOLE                            23,800
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TERRA INDUSTRIES INC        COMMON    880915103      9,590   269,900  SH      SOLE                           269,900
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TOTAL SA  -ADR               ADR      89151E109     11,338   153,200  SH      SOLE                           153,200
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TRIUMPH GROUP INC           COMMON    896818101      4,594    80,700  SH      SOLE                            80,700
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TUPPERWARE BRANDS CORP      COMMON    899896104      7,152   184,900  SH      SOLE                           184,900
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TWIN DISC INC               COMMON    901476101        906    57,300  SH      SOLE                            57,300
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U S BANCORP                 COMMON    902973304      3,433   106,100  SH      SOLE                           106,100
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ULTRAPAR PARTICIPACOES
-ADR                         ADR      90400P101      2,158    62,600  SH      SOLE                            62,600
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URS CORP                    COMMON    903236107      3,491   106,800  SH      SOLE                           106,800
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VERIZON COMMUNICATIONS      COMMON    92343V104      9,467   259,715  SH      SOLE                           259,715
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VOLVO AB SWE  -ADR           ADR      928856400      1,504    99,600  SH      SOLE                            99,600
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VSE CORP                    COMMON    918284100      1,225    43,400  SH      SOLE                            43,400
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WACHOVIA CORP               COMMON    929903102      2,398    88,800  SH      SOLE                            88,800
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Page 9 of 9                                                           03/31/2008


                                                     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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WARNACO GROUP INC           COMMON    934390402      8,326   211,100  SH      SOLE                           211,100
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WASHINGTON MUTUAL INC       COMMON    939322103      2,357   228,800  SH      SOLE                           228,800
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WELLCARE HEALTH PLANS INC   COMMON    94946T106      3,093    79,400  SH      SOLE                            79,400
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WELLS FARGO & CO            COMMON    949746101      3,355   115,300  SH      SOLE                           115,300
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WESTERN REFINING INC        COMMON    959319104        501    37,200  SH      SOLE                            37,200
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                    TOTAL                        1,057,102
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