THE HENNESSY FUNDS, INC., THE HENNESSY MUTUAL FUNDS, INC.,
              THE HENNESSY FUNDS TRUST and HENNESSY ADVISORS, INC.

                                 CODE OF ETHICS

                      Amended effective as of JULY 1, 2005
I.   INTRODUCTION
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     The Hennessy Funds, Inc., The Hennessy Mutual Funds, Inc., The Hennessy
     Funds Trust ("The Funds"), and Hennessy Advisors, Inc. ("Adviser") expect
     all of their directors, officers and employees to maintain high ethical
     standards of conduct and to comply with applicable laws and governmental
     regulations.

II.  DEFINITIONS
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     A.   "Access person" means any director, officer or advisory person of  the
          Fund or of the Adviser.

     B.   "Act" means the Investment Company Act of 1940, as amended.

     C.   "Adviser" means Hennessy Advisors, Inc.

     D.   "Advisory person" means: (i) any employee  of the Fund or the  Adviser
          or of any company  in a control relationship  to the Fund or  Adviser,
          who, in connection with his or her regular functions or duties, makes,
          participates in, or obtains information regarding the purchase or sale
          of Covered Securities by  the Fund, or whose  functions relate to  the
          making of any recommendations with respect to such purchases or sales;
          and (ii) any natural person in  a control relationship to the Fund  or
          Adviser who obtains information concerning recommendations made to the
          Fund with regard to the purchase or sale of Covered Securities by  the
          Fund.

     E.   A Covered Security is "being considered  for purchase or sale" when  a
          recommendation to purchase or sell the Covered Security has been  made
          and  communicated  and,  with  respect   to  the  person  making   the
          recommendation, when  such person  seriously considers  making such  a
          recommendation.

     F.   "Beneficial ownership" shall be interpreted in  the same manner as  it
          would be under Rule 16a-1(a)(2) under  the Securities Exchange Act  of
          1934 in determining  whether a  person is  the beneficial  owner of  a
          security for  purposes  as such  Act  and the  rules  and  regulations
          promulgated thereunder.

     G.   "CCO" means Chief Compliance Officer per rule 38a-1 of the Investment
          Company Act and rule 206(4)-7 of the Investment Advisers Act both of
          1940.

     H.   "Conflict of Interest": for the purposes of this Code of Ethics, a
          "conflict of interest" will be deemed to be present when an
          individual's private interest interferes in anyway, or even appears to
          interfere, with the interests of The Funds as a whole.

     I.   "Control" has the same meaning as that set forth in Section 2(a)(9) of
          the Act.

     J.   "Covered Security" means a security as defined in Section 2(a)(36)  of
          the Act, except that it does not include:

          (a)  Direct obligations of the Government of the United States;

          (b)  Bankers' acceptances,  bank certificates  of deposit,  commercial
               paper and  high quality  short-term debt  instruments,  including
               repurchase agreements; and

          (c)  Shares issued by open-end registered investment companies.

     K.   "Disinterested director" means a  director of the Fund  who is not  an
          "interested person" of the Fund within the meaning of Section 2(a)(19)
          of the Act and the rules and regulations promulgated thereunder.

     L.   "The Funds" or "Fund" means The Hennessy Funds, Inc. or any series  of
          The Hennessy Funds,  Inc. and/or Hennessy  Mutual Funds,  Inc. or  any
          series of Hennessy Mutual Funds, Inc. and/or The Hennessy Funds  Trust
          or any series of the Hennessy Funds Trust.

     M.   "Initial Public Offering" means  an offering of securities  registered
          under the Securities  Act of 1933,  the issuer  of which,  immediately
          before the registration, was not subject to the reporting requirements
          of Section 13 or Section 15(d) of the Securities Exchange Act of 1934.

     N.   "Investment personnel" means:   (i) any  employee of the  Fund or  the
          Adviser or of  any company in  a control relationship  to the Fund  or
          Adviser who,  in  connection with  his  or her  regular  functions  or
          duties, makes or participates in making recommendations regarding  the
          purchase or  sale of  securities by  the Fund;  and (ii)  any  natural
          person who controls the  Fund or Adviser  and who obtains  information
          concerning recommendations made to the Fund regarding the purchase  or
          sale of securities by the Fund.

     O.   A  "Limited  Offering"   means  an  offering   that  is  exempt   from
          registration under the Securities Act of 1933 pursuant to Section 4(2)
          or Section 4(6) thereof or pursuant to Rule 504, Rule 505 or Rule  506
          thereunder.

     P.   "Purchase or sale of a Covered Security" includes, among other things,
          the writing of an option to purchase or sell a Covered Security.

     Q.   "Reportable Security" means shares of the Funds and Covered
          Securities.

III. GENERAL STANDARDS
     -----------------

     The Funds and the Adviser hold their directors, officers, and employees
accountable for adhering to and advocating the following standards to the best
of their knowledge and ability:

     A.   Always act in an honest and ethical manner, including in connection
          with, and the handling and avoidance of, actual or apparent conflicts
          of interest between personal and professional relationships;

     B.   Fully comply with all applicable laws, rules and regulations of
          federal, state and local governments (both United States and foreign)
          and other applicable regulatory agencies (collectively, the "Laws");

     C.   Proactively promote full, fair, accurate, timely and understandable
          disclosure in reports and documents that The Funds and Adviser file
          with, or submit to, the Securities and Exchange Commission (the "SEC")
          and in other public communications The Funds or Adviser make; and

     D.   Proactively promote ethical and honest behavior with The Funds and the
          Adviser, including, without limitation, the prompt reporting of
          violations of, and being accountable for adherence to, this Code of
          Ethics.

IV.  SPECIFIC DUTIES AND RESPONSIBILITIES
     ------------------------------------

     In adhering to and advocating the standards set forth above; each director,
officer and employee shall fulfill the following duties and responsibilities to
the best of their knowledge and ability:

     A.   They shall handle all conflicts of interest between personal and
          professional relationships in an ethical and honest manner, and shall
          disclose in advance to the Chief Compliance Officer ("CCO") the
          relevant details of any transaction or relationship that reasonably
          could be expected to give rise to an actual or apparent conflict of
          interest between themselves and The Funds.  The CCO shall, as
          appropriate, discuss such disclosures with The Funds' and/or the
          Adviser's board of directors which board shall thereafter take such
          action with respect to the conflict of interest as it shall deem
          appropriate.  It is the general policy of The Funds and the Adviser
          that conflicts of interest should be avoided whenever practicable.

     B.   They shall use their best efforts to ensure the timely and
          understandable disclosure of information that, in all material
          respects, is accurate, complete, objective and relevant in all reports
          and documents The Funds and/or the Adviser file with, or submits to,
          the SEC or in any other public communications that The Funds or the
          Adviser make.

     C.   They shall use their best efforts to ensure their, The Funds', and the
          Adviser's compliance in all material respects with all applicable
          laws.

     D.   They shall respect the confidentiality of information acquired in the
          course of their work and shall not disclose such information, except
          when they believe they are authorized or legally obliged to disclose
          the information. They may not use confidential information acquired in
          the course of their work for their personal advantage.

     E.   They shall not take or direct or allow any other person to take or
          direct any action to fraudulently influence, coerce, manipulate or
          mislead The Funds' or the Adviser's independent auditing firm.

     F.   They may not engage The Funds' or the Adviser's auditing firms to
          perform audit or non-audit services without the prior approval of The
          Funds' and/or the Adviser's board of directors, or The Funds' or
          Adviser's audit committee or designee's.

     G.   The independent directors of Hennessy Advisors, Inc. shall not have
          access to, and shall not seek from any employee of the Adviser, any of
          the portfolio rebalancing information related to any of the mutual
          funds managed by Hennessy Advisors, Inc. until such time as the
          rebalancing of such funds has been entirely concluded except that
          certain limited access to such information may be granted with
          permission, in advance, from the Chief Compliance Officer.

V.   REPORTING VIOLATIONS
     --------------------

     A.   If any person believes that a director, officer or employee has
          violated this Code of Ethics; or if The Funds or the Adviser has or is
          about to violate a Law; or if a director, officer or employee believe
          that he or she is being asked to violate this Code of Ethics or any
          Law in the performance of his or her duties for The Funds or the
          Adviser: then the matter should be promptly reported to The Funds' and
          the Adviser's CCO and/or to the Audit Committee of the Adviser's board
          of directors.  The CCO and/or the Audit Committee will take
          appropriate steps to maintain the confidentiality of the reporting
          person's identity, to the extend consistent with The Funds' and the
          Adviser's obligations to investigate and remedy the matter and, if
          appropriate, to report the matter to government officials.  Persons
          may report violations of the Code of Ethics on an anonymous basis.  No
          retribution will be taken against a person for reporting, in good
          faith, a violation or suspected violation of this Code of Ethics.

VI.  APPROVAL OF THE CODE OF ETHICS
     ------------------------------

     A.   The Board  of Directors  of The  Funds, including  a majority  of  the
          Disinterested directors, and  the Board  of Directors  of the  Adviser
          shall approve this Code  of Ethics and  any material changes  thereto.
          Prior to  approving  this Code  of  Ethics and  any  material  changes
          thereto, they  must  determine  that  this  Code  of  Ethics  contains
          provisions  reasonably  necessary  to  prevent  access  persons   from
          violating Rule 17j-1(b) of the Act.

     B.   No less frequently than annually, the CCO of The Funds and the CCO  of
          the Adviser shall furnish a report  to the Boards of Directors of  the
          Funds and the Adviser:

          1.   Describing issues arising under the Code of Ethics since the last
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               report to the Board of Directors, including, but not limited  to,
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               information about material violations of  the Code of Ethics  and
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               sanctions imposed in response to such material violations.   Such
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               report shall also include a list of access persons under the Code
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               of Ethics.
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          2.   Certifying  that  The  Funds   and  Adviser  have  adopted   such
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               procedures as are reasonably necessary to prevent access  persons
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               from violating the Code of Ethics.
               ----------------------------------

     C.   This Code  of Ethics,  the approvals  required by  Sections VI.A.  and
          VI.B.(2),  and  the  reports  required  by  Section  VI.B.  shall   be
          maintained by the Fund's Administrator and by The Funds' and Adviser's
          CCO.  The  reports required by  Section V shall  be maintained by  The
          Funds' CCO.

     D.   This Code of Ethics may not be waived or amended except by the
          approval of both the board of directors of The Funds and the Audit
          Committee of the board of directors of the Adviser.

VII. INTERPRETATION AND ENFORCEMENT
     ------------------------------

     A.   This is a combined Code of Ethics for both The Funds and the Adviser.
          The Audit Committee of the Adviser's board of directors is responsible
          for overseeing the interpretation and enforcement of this Code of
          Ethics in all matters related to Hennessy Advisor's Inc.  The board of
          directors of The Funds is responsible for overseeing the
          interpretation and enforcement of this Code of Ethics in all matters
          related to The Hennessy Mutual Funds, Inc., The Hennessy Funds, Inc.,
          and The Hennessy Funds Trust.  In all matters related to The Funds,
          the Funds' board of directors shall over-ride the Audit Committee of
          and the board of directors of Hennessy Advisors, Inc.  When either
          party considers any matter related to this Code of Ethics, it shall
          act in executive session.

     B.   Each director, officer and employee will be held accountable for his
          or her adherence to this Code of Ethics by their respective boards of
          directors.  Directors, officers and employees failing to adhere to
          this Code of Ethics will be subject to appropriate disciplinary
          action, ranging from warnings to possible termination or removal.

VIII. EXEMPTED TRANSACTIONS
      ---------------------

The prohibitions of Section IX of this Code of Ethics shall not apply to:

          (a)  Purchases or sales effected in any account over which the  access
               person has no direct or indirect influence or control.

          (b)  Purchases or sales of Covered  Securities which are not  eligible
               for purchase or  sale by any  Fund; provided,  however, that  the
               prohibitions of Section IV.B of this  Code of Ethics shall  apply
               to such purchases and sales.

          (c)  Purchases or sales which are non-volitional on the part of either
               the access person or the Fund.

          (d)  Purchases which are  part of an  automatic dividend  reinvestment
               plan.

          (e)  Purchases effected  upon  the exercise  of  rights issued  by  an
               issuer pro rata to all holders  of a class of its securities,  to
                      --------
               the extent such rights were acquired from such issuer, and  sales
               of such rights so acquired.

          (f)  Purchases or sales of  common stock of issuers  in the Dow  Jones
               Industrial Average provided that  the number of shares  purchased
               or sold of any one such issuer  on any day does not exceed  5,000
               shares and  purchases or  sales of  common  stock of  issuers  of
               publicly traded stocks  not in the  Dow Jones Industrial  Average
               provided that the number of shares  purchased or sold of any  one
               such issuer on any day does not exceed 500 shares.

          (g)  Purchases or sales which receive the prior approval of the  Board
               of  Directors  of  the  Fund  because  they  are  only   remotely
               potentially harmful  to  the  Fund because  they  would  be  very
               unlikely to affect a highly institutional market, or because they
               clearly are  not related  economically to  the securities  to  be
               purchased, sold or held by the Fund.

IX.  PROHIBITED PURCHASES AND SALES
     ------------------------------

     A.   Except in  a transaction  exempted by  Section VII  of this  Code,  no
          access person  shall purchase  or sell,  directly or  indirectly,  any
          Covered Security in  which he has,  or by reason  of such  transaction
          acquires, any direct or indirect beneficial ownership and which to his
          actual knowledge  at  the time  of  such  purchase or  sale  is  being
          considered for purchase or sale by  the Fund or is being purchased  or
          sold by the Fund.

     B.   Except in  a transaction  exempted  by Section  VII  of this  Code  of
          Ethics, Investment Personnel (other than  the Fund's CCO) must  obtain
          approval from the Fund's CCO  before directly or indirectly  acquiring
          beneficial ownership in any securities  in an Initial Public  Offering
          or in a Limited Offering.  The Fund's CCO must obtain approval from  a
          majority of the Disinterested directors before directly or  indirectly
          acquiring beneficial ownership in any securities in an Initial  Public
          Offering or in a Limited Offering.  Prior approval shall not be  given
          if the  Fund's  CCO or  the  Disinterested directors,  as  applicable,
          believe(s) that the investment opportunity should be reserved for  the
          Fund or is being  offered to the  individual by reason  of his or  her
          position with the Fund.

     C.   Except in  a transaction  exempted  by Section  VII  of this  Code  of
          Ethics,  no  access  person  shall  purchase  or  sell,  directly   or
          indirectly, any  security  in which  he  has,  or by  reason  of  such
          transaction acquires, any direct or indirect beneficial ownership on a
          day during which the Fund has a  pending "buy" or "sell" order in  the
          same  security   until   that   order  is   executed   or   withdrawn.
          Notwithstanding the foregoing, Disinterested directors are not subject
          to this prohibition unless he or she knows or should have known at the
          time of such purchase or sale that  the Fund has such a pending  "buy"
          or "sell" order in the same security.

     D.   Investment Personnel shall not receive any gift or other thing of more
          than de minimis  value from any  person or entity  that does  business
          with or on behalf of the Fund.   The annual receipt of gifts from  the
          same source valued  at $100 or  less shall be  considered de  minimis.
          Additionally, the  receipt of  an occasional  dinner,  a ticket  to  a
          sporting event or the theater, or comparable entertainment also  shall
          be considered to be of de minimis value.

     E.   Except for  service which  began prior  to March  2, 1996,  Investment
          Personnel shall not serve on the board of directors of publicly traded
          companies absent prior authorization of the Board of Directors of  the
          Fund.  The Board of Directors of the Fund may so authorize such  board
          service only if it  determines that such  board service is  consistent
          with the interests of the Fund and its shareholders.

X.   REPORTING AND COMPLIANCE PROCEDURES
     -----------------------------------

     A.   Except as  provided in  Section X.B.  of this  Code of  Ethics,  every
          access person shall report  to the Fund  the information described  in
          Section X.C., Section V.D.  and Section V.E. of  this Code of  Ethics.
          All reports shall be filed with the Fund's President or designee.

     B.   Disinterested directors of the  Fund and the Adviser  need not make  a
          report pursuant to Section  X.C. and X.E. of  this Code of Ethics  and
          need only report a  transaction in a  Reportable Security pursuant  to
          Section X.D. of this Code of Ethics if such Disinterested director, at
          the time  of such  transaction, knew  or, in  the ordinary  course  of
          fulfilling his official duties as a director of the Fund, should  have
          known that, during the 15-day period immediately preceding the date of
          the  transaction  by  the  director,  such  Reportable  Security   was
          purchased or sold by the Fund or  was being considered by the Fund  or
          the Adviser for purchase or sale by the Fund.

          1.   An  access  person  need  not  make  a  report  with  respect  to
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               transactions effected for, and Reportable Securities held in, any
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               account over which the person has no direct or indirect influence
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               or control.
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          2.   An access person  need not  make a  quarterly transaction  report
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               pursuant to Section  X.D. of this  Code of Ethics  if the  report
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               would   duplicate   information   contained   in   broker   trade
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               confirmations  or  account  statements  received  by  the  Fund's
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               President or designee with  respect to the  access person in  the
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               time period required by  Section X.D., provided  that all of  the
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               information required by Section X.D.  is contained in the  broker
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               trade confirmations or  account statements or  in the records  of
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               the Fund.  All Investment Personnel shall direct their brokers to
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               supply to the Fund's  President or designee,  on a timely  basis,
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               duplicate copies  of  confirmations of  all  personal  securities
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               transactions  and  copies  of  all  account  statements  for  all
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               securities accounts.
               --------------------

     C.   Every access  person shall,  no later  than ten  (10) days  after  the
          person becomes  an  access person,  file  an initial  holdings  report
          containing the following information:

          1.   The  title,  number  of  shares  and  principal  amount  of  each
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               Reportable Security in which the access person had any direct  or
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               indirect beneficial ownership when  the person becomes an  access
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               person;
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          2.   The name  of any  broker, dealer  or bank  with whom  the  access
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               person maintained an  account in which  any securities were  held
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               for the direct or indirect benefit of the access person; and
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          3.   The date that the report is submitted by the access person.
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     D.   Every access person shall, no later  than ten (10) days after the  end
          of a calendar quarter, file a quarterly transaction report  containing
          the following information:

          1.   With  respect  to  any  transaction  during  the  quarter  in   a
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               Reportable Security in which the access person had any direct  or
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               indirect beneficial ownership:
               ------------------------------

          (a)  The date of the transaction, the title and the number of  shares,
               and the principal amount of each security involved;

          (b)  The nature of the transaction (i.e., purchase, sale or any  other
               type of acquisition or disposition);

          (c)  The price of the Reportable Security at which the transaction was
               effected;

          (d)  The name of the broker, dealer  or bank with or through whom  the
               transaction was effected; and

          (e)  The date that the report is submitted by the access person.

          2.   With respect to any account established  by the access person  in
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               which any securities were held during the quarter for the  direct
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               or indirect benefit of the access person:
               -----------------------------------------

          (a)  The name  of the  broker, dealer  or bank  with whom  the  access
               person established the account;

          (b)  The date the account was established; and

          (c)  The date that the report is submitted by the access person.

     E.   Every access person shall, no later than January 30 each year, file an
          annual holdings report containing the following information as of  the
          preceding December 31:

          1.   The  title,  number  of  shares  and  principal  amount  of  each
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               Reportable Security in which the access person had any direct  or
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               indirect beneficial ownership;
               ------------------------------

          2.   The name  of any  broker, dealer  or bank  with whom  the  access
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               person maintains an account in which any securities are held  for
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               the direct or indirect benefit of the access person; and
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          3.   The date that the report is submitted by the access person.
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     F.   Any report filed  pursuant to Section  X.C., Section  X.D. or  Section
          X.E. of this Code  of Ethics may contain  a statement that the  report
          shall not  be construed  as an  admission by  the person  making  such
          report that he has any direct or indirect beneficial ownership in  the
          security to which the report relates.

     G.   The Funds' and the Adviser's CCO or designee shall review all  reports
          filed pursuant to Section X.C., Section  X.D. or Section X.E. of  this
          Code of Ethics.   The  Funds' CCO and  the Adviser's  CCO or  designee
          shall identify all  access persons who  are required  to file  reports
          pursuant to this Section X of this Code of Ethics and must inform such
          access persons of their reporting obligation.

     H.   Each year the CCO shall provide all directors, officers, employees and
          access persons with a copy of this Code of Ethics.  Each year each  of
          them shall certify to The Funds and to the Adviser that (i) they  have
          read and understand this  Code of Ethics and  recognize that they  are
          subject thereto, and (ii) they have complied with the requirements  of
          this Code  of Ethics  and that  they have  disclosed or  reported  all
          personal securities transactions required to be disclosed or  reported
          pursuant to the requirements of this Code of Ethics.

     I.   Compliance with this Code of Ethics does not relieve access persons of
          their obligations under any other code of ethics.