As filed with the Securities and Exchange Commission on February 3, 2006.

                                  SCHEDULE 14A
                                 (RULE 14A-101)

                    INFORMATION REQUIRED IN PROXY STATEMENT

                              FILE NUMBER 811-8568

                            SCHEDULE 14A INFORMATION

                PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE
               SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. __)

[X]  Filed by the Registrant

[ ]  Filed by a Party other than the Registrant

Check the appropriate box:

[ ]  Preliminary Proxy Statement

[X]  Definitive Proxy Statement

[ ]  Definitive Additional Materials

[ ]  Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12

                  JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND
                (Name of Registrant as Specified in Its Charter)

                  JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND
                   (Name of Person(s) Filing Proxy Statement)

Payment of filing fee (check the appropriate box):

[ ] $125 per Exchange Act Rules 0-11(c) (1) (ii), 14a-6 (i) (1), or
    14a-6 (i) (2) or Item 22(a) (2) or schedule 14A (sent by wire transmission).

[ ] Fee paid previously with preliminary materials.

[X] No fee required.




      [LOGO]
------------------
JOHN HANCOCK FUNDS




John Hancock Bank and Thrift Opportunity Fund


February 3, 2006


Dear Fellow Shareholder:


As an investor in the John Hancock Bank and Thrift Opportunity Fund, you are
cordially invited to attend the annual shareholder meeting on Wednesday, March
22, 2006 at 9:00 A.M., Eastern Time, to be held at John Hancock Funds, 601
Congress Street, Boston, MA 02210-2805.

The proposals set forth in the enclosed proxy statement are routine items. A
routine item is one which occurs annually and makes no fundamental or material
changes to a fund's investment objectives, policies or restrictions, or to the
investment management contracts.


Elect your fund's Board of Trustees

Proposal number one asks you to elect four Trustees to serve until their
respective successors are elected and qualified. Your proxy statement includes
a brief description of each nominee's background.


Ratify the Trustees' selection of public accountants

Proposal number two asks you to ratify or reject the Trustees' selection of
PricewaterhouseCoopers LLP as the fund's independent registered public
accounting firm for the fund's current fiscal year.


Your vote is important!

Please complete the enclosed proxy ballot form, sign it and mail it to us
immediately. For your convenience, a postage-paid return envelope has been
provided. Your prompt response will help avoid the cost of additional mailings
at your fund's expense.

If you have any questions, please call 1-800-852-0218, Monday through Friday,
between 9:00 A.M. and 7:00 P.M., Eastern Time.

Thank you in advance for your prompt action on this very important matter.

                                                Sincerely,


                                                 /s/ Keith H. Hartstein



                                                Keith H. Hartstein
                                                Chief Executive Officer

P90PX 2/06



                 JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND
               601 Congress Street, Boston, Massachusetts 02210


                   NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                           To Be Held March 22, 2006

This is the formal agenda for your fund's shareholder meeting. It tells you
what matters will be voted on and the time and place of the meeting, in case
you want to attend in person.

To the Shareholders of John Hancock Bank and Thrift Opportunity Fund:

A shareholder meeting for your fund will be held at 601 Congress Street,
Boston, Massachusetts on Wednesday, March 22, 2006 at 9:00 A.M., Eastern Time,
to consider the following proposals:

   (1) To elect four Trustees to serve until their respective successors are
       elected and qualified.

   (2) To ratify or reject the Trustees' selection of PricewaterhouseCoopers
       LLP as the fund's independent registered public accounting firm for the
       fund's current fiscal year.

   (3) To transact such other business as may properly come before the meeting
       or any adjournment of the meeting.


Your Trustees recommend that you vote in favor of all proposals.

Shareholders of record as of the close of business on January 20, 2006 are
entitled to notice of and to vote at the fund's annual meeting and at any
related follow-up meeting. The proxy statement and proxy card are being mailed
to shareholders on or about February 3, 2006.

Whether or not you expect to attend the meeting, please complete and return the
enclosed proxy in the accompanying envelope. No postage is necessary if mailed
in the United States.

                                         By order of the Board of Trustees,



                                         Alfred P. Ouellette
                                         Assistant Vice President and
                                         Assistant Secretary

February 3, 2006



                 JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND
             601 Congress Street, Boston, Massachusetts 02210-2805


                        ANNUAL MEETING OF SHAREHOLDERS
                           To Be Held March 22, 2006


                                PROXY STATEMENT

     This proxy statement contains the information you should know before
voting on the proposals described in the notice. The fund will furnish without
charge a copy of its Annual Report to any shareholder upon request. If you
would like a copy of your fund's report, please send a written request to the
attention of the fund at 601 Congress Street, Boston, Massachusetts 02210-2805,
or call John Hancock Funds at 1-800-892-9552.

     This proxy statement is being used by your fund's Trustees to solicit
proxies to be voted at the annual meeting of your fund's shareholders. The
meetings will be held at 601 Congress Street, Boston, Massachusetts on
Wednesday, March 22, 2006 at 9:00 A.M., Eastern Time.

     If you sign the enclosed proxy card and return it in time to be voted at
the meeting, your shares will be voted in accordance with your instructions.
Signed proxies with no instructions will be voted FOR all proposals. If you
want to revoke your proxy, you may do so before it is exercised at the meeting
by filing a written notice of revocation with the fund at 601 Congress Street,
Boston, Massachusetts 02210-2805, by returning a signed proxy with a later date
before the meeting, or if attending the meeting and voting in person, by
notifying the fund's secretary (without complying with any formalities) at any
time before your proxy is voted.


Record Ownership
     The Trustees have fixed the close of business on January 20, 2006 as the
record date to determine which shareholders are entitled to vote at the
meeting. Shareholders are entitled to one vote per share on all business
relating to the fund at the annual meeting or any postponements. On the record
date, there were 84,400,000 shares of beneficial interest of the fund
outstanding.

     The fund's management does not know of anyone who beneficially owned more
than 5% of the fund's shares outstanding on the record date (Beneficial
ownership means voting power and/or investment power, which includes the power
to dispose of shares.)


                                  PROPOSAL 1

                             ELECTION OF TRUSTEES


General
     The fund's Board of Trustees consists of nine members. The Board is
divided into three staggered term classes containing three Trustees. The term
of one class expires each year, and no term continues for more than three years
after the applicable election. Each class of Trustees will stand for election
at the conclusion of their respective three-year terms. Classifying the
Trustees in this manner may prevent replacement of a majority of the Trustees
for up to a two-year period.

     As of the date of this proxy, each nominee for election currently serves
as a Trustee of the fund. Using the enclosed proxy card, you may authorize the
proxies to vote your shares for the nominees or you may withhold from the
proxies authority to vote your shares for one or more of the nominees. If no
contrary instructions are given, the proxies will vote FOR the nominees. Each
of the nominees has consented to his or her nomination and has agreed to serve
if elected. If, for any reason, any nominee should not be available for
election or able to serve as a Trustee, the proxies will exercise their voting
power in favor of a substitute nominee, if any, as the fund's Trustees may
designate. The fund has no reason to believe that it will be necessary to
designate a substitute nominee.


Proposal 1
     Messrs. Dion, Boyle, Ladner and Moore are the current nominees for
election.


Vote Required For Proposal 1
     The vote of a plurality of the votes cast by the shares of the fund is
sufficient to elect the nominees.

                                       1


Information Concerning Trustees
     The following table sets forth certain information regarding the nominees
for election to the Board. The table shows his or her principal occupation or
employment and other directorships during the past five years and the number of
John Hancock funds overseen by the Trustees. The table also lists the Trustees
who are not currently standing for election: The term of Ms. McGill Peterson,
Mr. Boyle and Mr. Pruchansky will expire at the 2007 annual meeting and Messrs.
Carlin, Chapman and Cunningham will expire at the 2008 annual meeting.





                                                                                                          Number of
Name, (Age), Address(1)             Principal Occupation(s) and other Directorships         Trustee      John Hancock
and Position with the Fund                     During the Past Five Years                    Since      Funds Overseen
----------------------------------------------------------------------------------------------------------------------
                                                                                              
                                                 NOMINEES FOR ELECTION
                                                TERM TO EXPIRE IN 2009

Ronald R. Dion                 Chairman and Chief Executive Officer, R. M. Bradley           1998             53
(Age 59)                       & Co., Inc.; Director, The New England Council and
Chairman and                   Massachusetts Roundtable; Director, Boston Stock
Independent Trustee            Exchange; Trustee, North Shore Medical Center;
                               Director, BJ's Wholesale Club, Inc. and a Corporator
                               of the Eastern Bank; Trustee, Emmanuel College;
                               Director, Boston Municipal Research Bureau; Member
                               of the Advisory Board, Carroll Graduate School of
                               Management at Boston College.

Charles L. Ladner              Chairman and Trustee, Dunwoody Village, Inc.                  1994            143
(Age 67)                       (retirement services); Senior Vice President and Chief
Independent Trustee            Financial Officer, UGI Corporation (public utility
                               holding company) (retired 1998); Vice President and
                               Director for AmeriGas, Inc. (retired 1998); Director of
                               AmeriGas Partners, L.P. (gas distribution) (until 1997);
                               Director, EnergyNorth, Inc. (until 1995); Director,
                               Parks and History Association (since 2001).

John A. Moore                  President and Chief Executive Officer, Institute for          2002             53
(Age 66)                       Evaluating Health Risks, (nonprofit institution)
Independent Trustee            (until 2001); Chief Scientist, Sciences International
                               (health research) (until 2003); Principal, Hollyhouse
                               (consulting) (since 2000); Director, CIIT (nonprofit
                               research) (since 2002).

                                                 NOMINEE FOR ELECTION
                                                TERM TO EXPIRE IN 2007

James R. Boyle*                Chairman and Director, John Hancock Advisers, LLC             2005            184
(Age 46)                       (the "Adviser"), The Berkeley Financial Group, LLC
Non-Independent Trustee        ("The Berkeley Group") (holding company) and
                               John Hancock Funds, LLC. ("John Hancock Funds")
                               (since 2005); President, John Hancock Annuities;
                               Executive Vice President, John Hancock Life Insurance
                               Company (since 2004); President U.S. Annuities;
                               Senior Vice President, The Manufacturers Life
                               Insurance Company (U.S.A) (prior to 2004).


                                       2





                                                                                                            Number of
Name, (Age), Address(1)              Principal Occupation(s) and other Directorships          Trustee      John Hancock
and Position with the Fund                      During the Past Five Years                     Since     Funds Overseen
-----------------------------------------------------------------------------------------------------------------------
                                                                                                
                                           TRUSTEES NOT STANDING FOR ELECTION
                                                 TERM TO EXPIRE IN 2007

Patti McGill Peterson          Executive Director, Council for International                   2002      53
(Age 62)                       Exchange of Scholars and Vice President, Institute of
Independent Trustee            International Education (since 1998); Senior Fellow,
                               Cornell Institute of Public Affairs, Cornell University
                               (until December 1998); Former President of Wells
                               College and St. Lawrence University; Director, Niagara
                               Mohawk Power Corporation (electric utility) (until
                               2003); Director, Ford Foundation, International
                               Fellowships Program (since 2002); Director, Lois
                               Roth Endowment (since 2002); Director, Council
                               for International Educational Exchange (since 2003).

Steven R. Pruchansky           Chairman and Chief Executive Officer, Greenscapes               1994      53
(Age 61)                       of Southwest Florida, Inc. (since 2000); Director and
Independent Trustee            President, Greenscapes of Southwest Florida, Inc. (until
                               2000); Managing Director, JonJames, LLC (real estate)
                               (since 2001); Director, First Signature Bank & Trust
                               Company (until 1991); Director, Mast Realty Trust
                               (until 1994); President, Maxwell Building Corp.
                               (until 1991).

                                           TRUSTEES NOT STANDING FOR ELECTION
                                                 TERM TO EXPIRE IN 2008

James F. Carlin                Director and Treasurer, Alpha Analytical Inc. (analytical       1994      53
(Age 65)                       laboratory) (since 1985); Part Owner and Treasurer,
Independent Trustee            Lawrence Carlin Insurance Agency, Inc. (since 1995);
                               Part Owner and Vice President, Mone Lawrence Carlin
                               Insurance Agency, Inc. (since 1996); Director and
                               Treasurer, Rizzo Associates (engineering) (until 2000);
                               Chairman and CEO, Carlin Consolidated, Inc.
                               (management/investments) (since 1987); Director and
                               Partner, Proctor Carlin & Co., Inc. (until 1999);
                               Trustee, Massachusetts Health and Education Tax
                               Exempt Trust (since 1993); Director of the following:
                               Uno Restaurant Corp. (until 2001), Arbella Mutual
                               (insurance) (until 2000), HealthPlan Services, Inc.
                               (until 1999), Flagship Healthcare, Inc. (until 1999),
                               Carlin Insurance Agency, Inc. (until 1999); Chairman,
                               Massachusetts Board of Higher Education (until 1999).

Richard P. Chapman, Jr.        President and Chief Executive Officer, Brookline                2005      53
(Age 70)                       Bancorp, Inc. (lending) (since 1972); Director, Lumber
Independent Trustee            Insurance Co., (insurance) (until 2000); Chairman and
                               Director, Northeast Retirement Services, Inc.
                               (retirement administration) (since 1998).


                                       3





                                                                                                          Number of
Name, (Age), Address(1)             Principal Occupation(s) and other Directorships         Trustee      John Hancock
and Position with the Fund                     During the Past Five Years                    Since     Funds Overseen
---------------------------------------------------------------------------------------------------------------------
                                                                                              
                                          TRUSTEES NOT STANDING FOR ELECTION
                                          TERM TO EXPIRE IN 2008 (continued)

William H. Cunningham          Former Chancellor, University of Texas System and             1994      143
(Age 62)                       former President of the University of Texas, Austin,
Independent Trustee            Texas; Chairman and CEO, IBT Technologies (until
                               2001); Director of the following: Hire.com (until
                               2004), STC Broadcasting, Inc. and Sunrise Tele-
                               vision Corp. (until 2001), Symtx, Inc. (electronic
                               manufacturing) (since 2001), Adorno/Rogers
                               Technology, Inc. (until 2004), Pinnacle Foods
                               Corporation (until 2003), rateGenius (until 2003),
                               Jefferson-Pilot Corporation (diversified life insurance
                               company), New Century Equity Holdings (formerly
                               Billing Concepts) (until 2001), eCertain (until 2001),
                               ClassMap.com (until 2001), Agile Ventures (until
                               2001), AskRed.com (until 2001); Advisory Director, Q
                               Investments; Advisory (until 2003); Advisory Director,
                               J.P. Morgan-Chase Bank (formerly Texas Commerce
                               Bank - Austin), LIN Television (since 2002), WilTel
                               Communications (until 2003) and Hayes Lemmerz
                               International, Inc. (diversified automotive parts supply
                               company) (since 2003).


----------
*  "Interested person," as defined in the Investment Company Act of 1940, as
   amended (the "Investment Company Act"), of the funds and the Adviser.


                                       4


Executive Officers

     The table below lists each fund's executive officers.




Name, (Age), Address(1)                                                                      Officer
and Position with the Fund       Principal Occupation(s) During the Past Five Years           Since
----------------------------------------------------------------------------------------------------
                                                                                      
Keith F. Hartstein               Senior Vice President, Manulife Financial Corporation        2005
(Age 49)                         (since 2004); Director, President and Chief Executive
President and Chief              Officer, the Adviser and The Berkeley Group (holding
Executive Officer                company); Director, President and Chief Executive
                                 Officer, John Hancock Funds; Director, President and
                                 Chief Executive Officer, Sovereign Asset Management
                                 LLC ("Sovereign"); Director, John Hancock Signature
                                 Services, Inc.; Director, Chairman and President, NM
                                 Capital Management, Inc. (NM Capital); Chairman,
                                 Investment Company Institute Sales Force Marketing
                                 Committee (since 2003); Executive Vice President,
                                 John Hancock Funds (until 2005).

John G. Vrysen                   Director, Executive Vice President and Chief Financial       2005
(Age 50)                         Officer, the Adviser, Sovereign Asset Management LLC,
Executive Vice President and     the Berkeley Group and John Hancock Funds (since
Chief Financial Officer          2005); Vice President and General Manager, Fixed
                                 Annuities, U.S. Wealth Management (until 2005); Vice
                                 President, Operations Manulife Wood Logan July
                                 2000 - September 2004.

William H. King                  Vice President and Treasurer, each of the John Hancock       1994
(Age 53)                         funds advised by the Advisers; Vice President, the
Vice President and Treasurer     Adviser.

Francis V. Knox, Jr.             Vice President and Chief Compliance Officer for John         2005
(Age 58)                         Hancock Investment Company, John Hancock Life
Vice President and Chief         Insurance Company (U.S.A.), John Hancock Life
Compliance Officer               Insurance Company and John Hancock Funds (since
                                 2005); Fidelity Investments - Vice President and
                                 Assistant Treasurer, Fidelity Group of Funds (until
                                 2004); Fidelity Investments - Vice President and Ethics
                                 & Compliance Officer (until 2001).


----------
(1) Business address for Independent and Non-Independent Trustees and officers
    is 601 Congress Street, Boston,
    Massachusetts 02210.

     The fund's Board of Trustees currently has four standing Committees: the
Audit Committee, the Governance Committee, the Contracts/Operations Committee
and the Investment Performance Committee. Each Committee is comprised of
Independent Trustees who are not "interested persons".

     The current membership of each Committee is set forth below:




Audit                        Governance                   Contracts/Operations            Investment Performance
------------------------------------------------------------------------------------------------------------------
                                                                                 
Messrs. Chapman, Ladner,     All Independent Trustees     Messrs. Carlin, Cunningham,     All Independent Trustees
Moore and Ms. Peterson                                    Dion and Pruchansky


     All members of each fund's Audit Committee are Independent under the New
York Stock Exchange's Revised Listing Rules, and each member is financially
literate with at least one having accounting or financial management expertise.
The Board has adopted a written charter for the Audit Committee, which is
attached as Attachment 1. The Audit Committee recommends to the full Board the
appointment of outside auditors for the fund, monitors and oversees the audits
of the fund, communicates with both independent auditors and internal auditors
on a regular basis and provides a forum for the auditors to report and discuss
any matters they deem appropriate at any time. Each Audit Committee reports
that it has (1) reviewed and discussed each fund's audited financial statements
with management; (2) discussed with the independent auditors the matters
relating to the quality of each fund's financial


                                       5


reporting as required by SAS 61; (3) received written disclosures and an
independence letter from the independent auditors required by Independent
Standards Board Standard No. 1, and discussed with the auditors their
independence; and (4), based on these discussions, recommended to the Board
that each fund's financial statements be included in each fund's annual report
for the last fiscal year (see Attachment 2).

     All of the Independent Trustees are members of the Governance Committee.
The Governance Committee makes recommendations to the Board on issues related
to corporate governance applicable to the Independent Trustees and to the
composition and operation of the Board, and recommend nominees to serve as
members of the Board. Among other duties, the Governance Committee determines
the compensation paid to the Independent Trustees. All members of the
Governance Committee are Independent under the New York Stock Exchange's
Revised Listing Rules and are Independent Trustees. The Board has adopted a
written charter for the Governance Committee, which is attached as Attachment 3
to this proxy. The Governance Committee selects and nominates for elections
candidates for Independent Trustees. The Trustees who are not Independent
Trustees and the Officers of the fund are nominated and selected by the Board.

     In reviewing a potential nominee and in evaluating the renomination of
current Independent Trustees, the Governance Committee expects to apply the
following criteria: (i) the nominee's reputation for integrity, honesty and
adherence to high ethical standards, (ii) the nominee's business acumen,
experience and ability to exercise sound judgments, (iii) a commitment to
understand the fund and the responsibilities of a trustee of an investment
company, (iv) a commitment to regularly attend and participate in meetings of
the Board and its Committees, (v) the ability to understand potential conflicts
of interest involving management of the fund and to act in the interests of all
shareholders, and (vi) the absence of a real or apparent conflict of interest
that would impair the nominee's ability to represent the interests of all the
shareholders and to fulfill the responsibilities of an Independent Trustee. The
Governance Committee does not necessarily place the same emphasis on each
criteria and each nominee may not have each of these qualities.

     As long as an existing Independent Trustee continues, in the opinion of
the Governance Committee, to satisfy the criteria listed above, the Committee
generally would favor the renomination of an existing Trustee rather than a new
candidate. Consequently, while the Governance Committee will consider nominees
recommended by shareholders to serve as trustees, the Governance Committee may
only act upon such recommendations if there is a vacancy on the Board or the
Governance Committee determines that the selection of a new or additional
Trustee is in the best interests of the funds. In the event that a vacancy
arises or a change in Board membership is determined to be advisable, the
Governance Committee will, in addition to any shareholder recommendations,
consider candidates identified by other means, including candidates proposed by
members of the Governance Committee. The Governance Committee may retain a
consultant to assist the Committee in a search for a qualified candidate.

     Any shareholder recommendation must be submitted in compliance with all of
the pertinent provisions of Rule 14a-8 under the Securities Exchange Act of
1934, as amended, and a fund's by-laws to be considered by the Governance
Committee. In evaluating a nominee recommended by a shareholder, the Governance
Committee, in addition to the criteria discussed above, may consider the
objectives of the shareholder in submitting that nomination and whether such
objectives are consistent with the interests of all shareholders. If the Board
determines to include a shareholder's candidate among the slate of its
designated nominees, the candidate's name will be placed on the fund's proxy
card. If the Board determines not to include such candidate among its
designated nominees and the shareholder has satisfied the requirements of Rule
14a-8, the shareholder's candidate will be treated as a nominee of the
shareholder who originally nominated the candidate. In that case, the candidate
will not be named on the proxy card distributed with the fund's proxy
statement. Each of the nominees for election as Trustee was recommended by the
Governance Committee.

     The Contracts/Operations Committee oversees the initiation, operation and
renewal of the various contracts between the fund and other entities. These
contracts include advisory, custodial and transfer agency agreements and
arrangements with other service providers.

     The Investment Performance Committee monitors and analyzes the investment
performance of the funds generally, consults with the Adviser as necessary if a
fund is considered to require special attention, and reviews fund peer groups
and other comparative standards as necessary.

     Each Board of Trustees held five meetings during each fund's fiscal year.
With respect to each fund, no Trustee attended fewer than 75% of the aggregate
of (1) the total number of meetings of the Trustees of the fund; and (2) the
total number of meetings held by all Committees of the Trustees on which they
served. The funds hold joint meetings of the Trustees and all Committees.


                                       6


Trustee Ownership
     The following table provides a dollar range indicating each Trustee's
ownership of equity securities of the Fund as well as aggregate holdings of
shares of equity securities of all John Hancock Funds overseen by the Trustee,
as of December 31, 2005.


                              Trustee Holdings(1)



                             Bank and Thrift Opportunity      All John Hancock
                                         Fund                  Funds Overseen
                            ------------------------------   -----------------
Name of Trustee              Shares        Dollar Range         Dollar Range
------------------------------------------------------------------------------
                                                    
Independent Trustees
James F. Carlin                400        $1 - $10,000          Over $100,000
Richard P. Chapman, Jr.         --                  --          Over $100,000
William H. Cunningham           --                  --          Over $100,000
Ronald R. Dion                 100        $1 - $10,000          Over $100,000
Charles L. Ladner              800        $1 - $10,000          Over $100,000
Dr. John A. Moore            1,000   $10,001 - $50,000          Over $100,000
Patti McGill Peterson          136        $1 - $10,000          Over $100,000
Steven R. Pruchansky           200        $1 - $10,000          Over $100,000

Non-Independent Trustees
James R. Boyle                  --                  --                     --


----------
(1) The amounts reflect the aggregate dollar range of equity securities
    beneficially owned by the Trustees in the Funds and in all John Hancock
    funds overseen by each Trustee. For each Trustee, the amounts reflected
    include share equivalents of certain John Hancock funds in which the
    Trustee is deemed to be invested pursuant to the Deferred Compensation Plan
    for Independent Trustees, as more fully described under "Remuneration of
    Trustees and Officers". The information as to beneficial ownership is based
    on statements furnished to the funds by the Trustees. Each of the Trustees
    has all voting and investment powers with respect to the shares indicated.
    None of the Trustees beneficially owned individually, and the Trustees and
    executive officers of the funds as a group did not beneficially own, in
    excess of one percent of the outstanding shares of any fund.


Compliance with Section 16(a) Reporting Requirements
     Section 16(a) of the Securities Exchange Act of 1934 requires a fund's
executive officers, Trustees and persons who own more than 10% of a fund's
shares ("10% Shareholders") to file reports of ownership and changes in
ownership with the Securities and Exchange Commission ("SEC"). Executive
officers, Trustees and 10% Shareholders are also required by SEC regulations to
furnish each fund with copies of all Section 16(a) forms they file. Based
solely on a review of the copies of these reports furnished to the funds and
representations that no other reports were required to be filed, each fund
believes that during the past fiscal year its executive officers, Trustees and
10% Shareholders complied with all applicable Section 16(a) filing
requirements.


                                       7


Remuneration of Trustees and Officers
     The following table provides information regarding the compensation paid
by the fund and the other investment companies in the John Hancock fund complex
to the Independent Trustees for their services for the year ended October 31,
2005. Any non-Independent Trustee and each of the fund's officers are
interested persons of the Adviser, are compensated by the Adviser and/or its
affiliates and receive no compensation from the funds for their services.




                                                      Total Compensation
                                      Aggregate          All Funds in
                                     Compensation        John Hancock
Independent Trustees                from the Fund      Fund Complex(1)
------------------------------------------------------------------------
                                               
James F. Carlin                          5,986               103,703
Richard P. Chapman, Jr.*                 1,374               103,953
William J. Cosgrove+                     1,053                95,203
William H. Cunningham*                   5,943               109,171
Ronald R. Dion*                          6,042               151,399
Charles L. Ladner                        7,525               149,790
Dr. John A. Moore*                       4,559               115,703
Patti McGill Peterson                    4,407               100,203
Steven R. Pruchansky*                    6,101               115,203
Norman H. Smith*+                        5,812                89,953
John P. Toolan+                            392                     0
                                       -------            ----------
Totals                                 $49,194            $1,134,281


----------
(1) The total compensation paid by the John Hancock fund complex to the
    Independent Trustees for the calendar year ended December 31, 2005. All the
    Independent Trustees were Trustees of 52 funds in the John Hancock fund
    complex except Mr. Cunningham and Mr. Ladner who were Trustees of 143
    funds.

*  As of December 31, 2005, the value of the aggregate accrued deferred
   compensation amount from all funds in the John Hancock fund complex for Mr.
   Chapman was $76,421, Mr. Cunningham was $125,996, Mr. Dion was $325,086,
   Dr. Moore was $283,070, Mr. Pruchansky was $246,371 and Mr. Smith was
   $382,371 under the John Hancock Deferred Compensation Plan for Independent
   Trustees (the "Plan"). Under the Plan, an Independent Trustee may elect to
   have deferred fees invested by a fund in shares of one or more funds in the
   John Hancock fund complex, and the amount paid to the Trustees under the
   Plan will be determined based upon the performance of such investments.
   Deferral of Trustees' fees does not obligate any fund to retain the
   services of any Trustee or obligate any fund to pay any particular level of
   compensation to the Trustee.

+  Mr. Cosgrove retired as of March 31, 2005. Mr. Smith retired as of June 30,
   2005. Mr. Toolan retired as of December 31, 2004.


Material Relationships of the Independent Trustees
     As of December 31, 2005, none of the Independent Trustees, nor any
immediate family member, owns shares of John Hancock Advisers, LLC (the
"investment adviser") or is a principal underwriter of the fund, nor does any
such person own shares of a company controlling, controlled by or under common
control with, the investment adviser or a principal underwriter of the fund.

     There have been no transactions by the fund since the beginning of the
fund's last two fiscal years, nor are there any transactions currently
proposed, in which the amount exceeds $60,000, and in which any trustee of the
fund or any immediate family members has or will have a direct or indirect
material interest, nor have any of the foregoing persons been indebted to the
fund in an amount in excess of $60,000 at any time since that date.

     No Independent Trustee, nor any immediate family member has had, in the
past five years, any direct or indirect interest, the value of which exceeds
$60,000, in the investment adviser, a principal underwriter of the fund or in a
person (other than a registered investment company) directly or indirectly
controlling, controlled by or under common control with, the investment adviser
or principal underwriter of the fund. Moreover, no Independent Trustee or
immediate family member has, or has had in the last two fiscal years of the
fund, any direct or indirect relationships or material interest in any
transaction or in any currently proposed transaction, in which the amount
involved exceeds $60,000, in which the following persons were or are a party:
the fund, an officer of the fund, any investment company sharing the same
investment adviser or principal underwriter as the fund or any officer of such
a company, any investment adviser or principal underwriter of the fund or any
officer of such a party, any person


                                       8


directly or indirectly controlling, controlled by or under common control with
the investment adviser or principal underwriter of the fund, or any officer of
such a person.

     Within the last two completed fiscal years of the fund, no officer of any
investment adviser or principal underwriter of the fund or of any person
directly or indirectly controlling, controlled by or under common control with,
the investment adviser or principal underwriter of the fund, has served as a
director on a board of a company where any of the Independent Trustees or
nominees of the fund, or immediate family members of such persons, has served
as an officer.


Legal Proceedings
     There are no material pending legal proceedings to which any Trustee or
affiliated person is a party adverse to the fund or any of its affiliated
persons or has a material interest adverse to the fund or any of its affiliated
persons. In addition, there have been no legal proceedings that are material to
an evaluation of the ability or integrity of any trustee or executive officer
of the fund within the past five years.


                                  PROPOSAL 2

                         RATIFICATION OF SELECTION OF
               THE INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

     The Trustees, including a majority of the Independent Trustees, have
selected PricewaterhouseCoopers LLP ("PricewaterhouseCoopers") to act as
independent registered public accounting firm for the fund's fiscal year ending
October 31, 2006.

     The following table sets forth the aggregate fees billed by Deloitte &
Touche LLC ("Deloitte & Touche"), the prior independent accountants for the
fund's 2004 and 2005 fiscal years for professional services rendered for: (i)
the audit of the fund's annual financial statements and the review of financial
statements included in the fund's reports to stockholders, (ii) assurance and
related services that are reasonably related to the audit of the fund's
financial statements, (iii) tax compliance, tax advice or tax planning and (iv)
all services other than (i), (ii) and (iii). The table also discloses the
aggregate fees paid during the 2004 and 2005 fiscal years to
PricewaterhouseCoopers, the funds' independent accountants by John Hancock
Advisers, LLC and any entity controlling, controlled by or under common control
with John Hancock Advisers, LLC to the extent that the engagement relates
directly to the operations and financial reporting of registered investment
companies (the "Adviser and Adviser Affiliates").




                                                                  Audit-related
                                             Audit fees               fees               Tax fees            All other fees
                                       ---------------------------------------------------------------------------------------
                                          2004         2005       2004     2005       2004        2005      2004       2005
                                       ---------------------------------------------------------------------------------------
                                                                                            
Bank and Thrift Opportunity             $36,950      $38,800       $0       $0      $2,250      $2,400       $0      $     0
The Adviser and Adviser Affiliates      $     0      $     0       $0       $0      $    0      $    0       $0      $67,200


     On March 8, 2005, the Fund engaged PricewaterhouseCoopers as its
independent public accountants for the Fund's 2006 fiscal year and dismissed
Deloitte & Touche from such position. The decision to change accountants was
recommended by the Fund's Audit Committee and approved by the Fund's Board. The
reports of Deloitte & Touche on the Fund's financial statements for the 2004
and 2005 fiscal years did not contain any adverse opinion, disclaimer of
opinion or qualification or modification as to uncertainty, audit scope or
accounting principles.

     During the Fund's 2004 and 2005 fiscal years, the Fund had no disagreement
with Deloitte & Touche on any matter of accounting principles or practices,
financial statement disclosure or auditing scope or procedure, with
disagreement(s), if not resolved to the satisfaction of Deloitte & Touche,
would have caused Deloitte & Touche to make a reference to the subject matter
of the disagreement in connection with its reports on the financial statements
of the Fund.

     The Fund's Audit Committee has adopted procedures to pre-approve audit and
non-audit services for the Funds and the Adviser and Adviser Affiliates. These
procedures identify certain types of audit and non-audit services that are
anticipated to be provided by PricewaterhouseCoopers during a calendar year
and, provided the services are within the scope and value standards set forth
in the procedures, pre-approve those engagements. The scope and value criteria
are reviewed annually. These procedures require both audit and non-audit
sources to be approved by the Audit Committee prior to PricewaterhouseCoopers
being engaged. In recommending PricewaterhouseCoopers as the Funds' independent
accountants, the Audit Committee has considered the compensation provided to
PricewaterhouseCoopers for audit and non-audit services to the Adviser and
Adviser Affiliates and has determined that such compensation is not
incompatible with maintaining PricewaterhouseCoopers' independence. The
aggregate amount of non-audit fees paid by the fund, the Adviser and an Advisor
Affiliate that provide services to the fund,


                                       9


which includes amounts described above, were $111,462 and $102,200 for the
fiscal years ending October 31, 2004 and 2005. All such non-audit services were
pre-approved in accordance with the fund's policy.

     PricewaterhouseCoopers has advised the fund that it has no direct or
indirect financial interest in the fund. This selection is subject to the
approval by the shareholders of the fund at the meeting. The enclosed proxy
card provides space for instructions directing the proxies named on the proxy
card to vote for, against, or abstain from, ratifying that selection. A
representative of PricewaterhouseCoopers is expected to be present at the
meeting, will have the opportunity to make a statement if the representative
desires to do so and will be available to respond to appropriate questions
relating to the examination of the fund's financial statements.

     The board of trustees, including all the Independent Trustees, unanimously
recommends that shareholders ratify the selection of PricewaterhouseCoopers, as
independent public accountants of the fund for the fiscal year ending October
31, 2006.

Vote Required to Ratify the Selection of Independent Registered Public
Accounting Firm

     The approval of a "majority" of the shares of the fund is required to
ratify the selection of PricewaterhouseCoopers as such fund's independent
registered public accounting firm.


                                 MISCELLANEOUS


Voting; Quorum; Adjournment
     The following vote is required to approve each respective proposal:




              Proposal                                                Vote Required
--------------------------------------------------------------------------------------------------------------------
                                  
Election of Trustees                 A plurality of all votes cast, assuming a quorum exists.*
(Proposal 1)                         A "plurality" means that the four nominees up for election receiving the
                                     greatest number of votes will be elected as trustees, regardless of the number
                                     of votes cast.

Ratification of Public Accountants   The affirmative vote of more than 50% of the votes cast, assuming a
(Proposal 2)                         quorum exists.*


----------
*  In order for a "quorum" to exist, a majority of the shares outstanding and
   entitled to vote must be present at the meeting, either in person or by
   proxy, determined in accordance with the table below.

     Proposals 1 and 2 in this proxy statement are considered routine matters
on which brokers holding shares in "street name" may vote without instruction
under the rules of the New York Stock Exchange.

     The following table summarizes how the quorum and voting requirements are
determined.




Shares                                    Quorum                                    Voting
------------------------------------------------------------------------------------------------------------
                                                           
In General                All shares "present" in person or by   Shares present in person will be voted in
                          proxy are counted in determining       person by the shareholder at the meeting.
                          whether a quorum exists.               Shares present by proxy will be voted by
                                                                 the proxyholder in accordance with
                                                                 instructions supplied in the proxy.

Broker Non-Vote           Considered "present" at meeting.       Not voted. Same effect as a vote "against"
                                                                 a proposal.

Proxy with No Voting      Considered "present" for determining   Will be voted "for" the proposal by the
Instruction (other than   whether a quorum exists.               proxyholder.
Broker Non-Vote)

Vote to Abstain           Considered "present" for determining   Disregarded. Because abstentions are not
                          whether a quorum exists.               votes "cast," abstentions will have no
                                                                 effect on whether a proposal is approved.


     If a quorum is not present, the persons named as proxies may vote their
proxies to adjourn the meeting to a later date. If a quorum is present, but
there are insufficient votes to approve any proposal, the persons named as
proxies may propose one or more adjournments of the meeting to permit further
solicitation. Shareholder action may be taken on one or more proposals prior to
such adjournment. Proxies instructing a vote for a proposal will be


                                       10


voted in favor of an adjournment with respect to that proposal, and proxies
instructing a vote against a proposal will be voted against an adjournment with
respect to that proposal.


Expenses and Methods of Solicitation
     The costs of the meeting, including the solicitation of proxies, will be
paid by the fund. Persons holding shares as nominees will be reimbursed by the
fund, upon request, for their reasonable expenses in sending soliciting
material to the principals of the accounts. In addition to the solicitation of
proxies by mail, Trustees, officers and employees of the fund or of the fund's
adviser may solicit proxies in person or by telephone. John Hancock Advisers,
LLC, 601 Congress Street, Boston, Massachusetts 02210-2805, serves as the
fund's investment adviser and administrator. Mellon Investor Services LLC has
been retained to assist in the solicitation of proxies at a cost of
approximately $3,000, plus reasonable expenses.


Telephone Voting
     In addition to soliciting proxies by mail, by fax or in person, the fund
may also arrange to have votes recorded by telephone by officers and employees
of the fund or by the personnel of the adviser or the transfer agent or
solicitor. The telephone voting procedure is designed to verify a shareholder's
identity, to allow a shareholder to authorize the voting of shares in
accordance with the shareholder's instructions and to confirm that the voting
instructions have been properly recorded.

     o A shareholder will be called on a recorded line at the telephone number
       in the fund's account records and will be asked to provide the
       shareholder's social security number or other identifying information.

     o The shareholder will then be given an opportunity to authorize proxies to
       vote his or her shares at the meeting in accordance with the
       shareholder's instructions.

     Alternatively, a shareholder may call the Funds' Voice Response Unit to
     vote;

     o Read the proxy statement and have your proxy card at hand.

     o Call the toll-free-number located on your proxy card.

     o Follow recorded instructions.

     With both methods of telephone voting, to ensure that the shareholder's
instructions have been recorded correctly, the shareholder will also receive a
confirmation of the voting instructions.

     If the shareholder decides after voting by telephone to attend the
Meeting, the shareholder can revoke the proxy at that time and vote the shares
at the Meeting.


Internet Voting
     You will also have the opportunity to submit your voting instructions via
the Internet by utilizing a program provided through a vendor. Voting via the
Internet will not affect your right to vote in person if you decide to attend
the meeting. Do not mail the proxy card if you are voting via the Internet. To
vote via the Internet, you will need the information on your proxy card. These
Internet voting procedures are designed to authenticate shareholder identities,
to allow shareholders to give their voting instructions and to confirm that
shareholders' instructions have been recorded properly. If you are voting via
the Internet you should understand that there may be costs associated with
electronic access, such as usage charges from Internet access providers and
telephone companies, that must be borne to you.

     o Read the proxy statement and have your card on hand.

     o Go to the website listed on the card.

     o Follow the directions on the website. Please call 1-800-852-0218 if you
       have any problems.

     o To insure that your instructions have been recorded correctly, you will
       receive a confirmation of your voting instructions immediately after your
       submission.


The Funds' Adviser and Subadviser
     The Fund's investment adviser is John Hancock Advisers, LLC, 601 Congress
Street Boston, Massachusetts. An affiliate of the Adviser, Sovereign Asset
Management LLC, 101 Huntington Ave., Boston, Massachusetts, serves as
subadviser to the fund.


                                       11


Other Matters
     The management of the fund knows of no business to be brought before the
meeting except as mentioned above. If, however, any other matters were properly
to come before the meeting, the persons named on the enclosed proxy card intend
to vote on those matters in accordance with their best judgment. If any
shareholders desire additional information about the matters proposed for
action, the management will provide further information.


                             SHAREHOLDER PROPOSALS

Shareholder proposals including nominees for Trustee, intended to be presented
at a fund's annual meeting in 2007 must be received by the fund at its offices
at 601 Congress Street, Boston, Massachusetts 02110, after September 6, 2006,
but no later than October 6, 2006 for inclusion in that fund's proxy statement
and form of proxy relating to that meeting (subject to certain exceptions).


               IT IS IMPORTANT THAT PROXIES BE RETURNED PROMPTLY


                                  JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND


Dated: February 3, 2006

                                       12


                                 ATTACHMENT 1

                              JOHN HANCOCK FUNDS
                            AUDIT COMMITTEE CHARTER

     A. Membership. The Audit Committee shall be composed exclusively of
Trustees who are not "interested persons" as defined in the Investment Company
Act of 1940 of any of the funds, or of any fund's investment adviser or
principal underwriter (the "Independent Trustees") and who satisfy the
independence and financial literacy requirements in this charter. The Audit
Committee shall be composed of at least three Independent Trustees who are
designated for membership from time to time by the Board of Trustees. In
selecting Independent Trustees to serve on the Audit Committee, the Board
should select members who are free of any relationship that, in the opinion of
the Board, may interfere or give the appearance of interfering with such
member's individual exercise of independent judgment. Unless otherwise
determined by the Board, no member of the Audit Committee may serve on the
audit committee of more than two other public companies (other than another
John Hancock Fund). Except as otherwise permitted by the applicable rules of
the New York Stock Exchange, each member of the Audit Committee shall be
independent as defined by such rules and Rule 10A-3(b)(1) of the Exchange Act.
Each member of the Audit Committee must be financially literate, as such
qualification is interpreted by the Board of Trustees in its business judgment,
or must become financially literate within a reasonable period of time after
his or her appointment to the Audit Committee. At least one member of the Audit
Committee must have accounting or related financial management expertise, as
the Board of Trustees interprets such qualification in its business judgment.

   B. Overview. The Audit Committee's purpose is to:

   1. assist the Board of Trustee's oversight of (1) the integrity of the
      funds' financial statements, (2) the funds' compliance with legal and
      regulatory requirements (except to the extent such responsibility is
      delegated to another committee), (3) the independent auditor's
      qualifications and independence, and (4) the performance of the funds'
      internal audit function and independent auditors;

   2. act as a liaison between the funds' independent accountants and the
      Board of Trustees;

   3. prepare an Audit Committee Report as required by the Securities and
      Exchange Commission (the "SEC") to the extent required to be included in
      the funds' annual proxy statement or other filings;

     The Audit Committee shall discharge its responsibilities, and shall access
the information provided by the funds' management and independent auditors, in
accordance with its business judgment. Management is responsible for the
preparation of the fund's financial statements and the independent auditors are
responsible for auditing those financial statements. The Audit Committee and
the Board of Trustees recognize that management (including the internal audit
staff) and the independent auditors have more experience, expertise, resources
and time, and more detailed knowledge and information regarding a fund's
accounting, auditing, internal control and financial reporting practices than
the Audit Committee does. Accordingly, the Audit Committee's oversight role
does not provide any expert or special assurance as to the financial statements
and other financial information provided by a fund to its shareholders and
others. The independent auditors are responsible for auditing the funds' annual
financial statements. The authority and responsibilities set forth in this
charter do not reflect or create any duty or obligation of the Audit Committee
to plan or conduct any audit, to determine or certify that any fund's financial
statements are complete, accurate, fairly presented, or in accordance with
generally accepted accounting principles or applicable law, or to guarantee any
independent auditor's report.

     C. Oversight. The independent auditors shall report directly to the Audit
Committee, and the Audit Committee shall be responsible for oversight of the
work of the independent auditors, including resolution of any disagreements
between any fund's management and the independent auditors regarding financial
reporting. In connection with its oversight role, the Audit Committee should
also review with the independent auditors, from time to time as appropriate:
significant risks and uncertainties with respect to the quality, accuracy or
fairness of presentation of a fund's financial statements; recently disclosed
problems with respect to the quality, accuracy or fairness of presentation of
the financial statements of companies similarly situated to the funds and
recommended actions which might be taken to prevent or mitigate the risk of
problems at the funds arising from such matters; accounting for unusual
transactions; adjustments arising from audits that could have a significant
impact on the funds' financial reporting process; and any recent SEC comments
on the funds' SEC reports, including, in particular, any compliance comments.
The Audit Committee should inquire of the independent auditor concerning the
quality, not just the acceptability, of the funds' accounting determinations
and other judgmental areas and question whether management's choices of
accounting principles are, as a whole, conservative, moderate or aggressive.


                                       13


     D. Specific Responsibilities. The Audit Committee shall have the following
duties and powers, to be exercised at such times and in such manner as the
Committee shall deem necessary or appropriate:

    1. To oversee the funds' auditing and accounting process.

    2. To approve, and recommend to the Board of Trustees for its ratification
       and approval in accord with applicable law, the selection, appointment
       and retention of an independent auditor for each fund prior to the
       engagement of such independent auditor and, at an appropriate time, its
       compensation. The Committee should meet with the independent auditor
       prior to the audit to discuss the planning and staffing of the audit. The
       Committee should periodically consider whether, in order to assure
       continuing auditor independence, there should be regular rotation of the
       independent audit firm and obtain and review a copy of the most recent
       report on the independent auditor issued by the Public Company Accounting
       Oversight Board pursuant to Section 104 of the Sarbanes-Oxley Act.

    3. To periodically review and evaluate the lead partner and other senior
       members of the independent auditor's team and confirm the regular
       rotation of the lead audit partner and reviewing partner as required by
       Section 203 of the Sarbanes-Oxley Act.

    4. To confirm that the officers of the funds were not employed by the
       independent auditor, or if employed, did not participate in any capacity
       in the audit of the funds, in each case, during the one-audit-year period
       preceding the date of initiation of the audit, as required by Section 206
       of the Sarbanes-Oxley Act.

    5. To pre-approve all non-audit services provided by the independent
       auditor to the fund or to the fund's investment adviser and any entity
       controlling, controlled by, or under common control with the investment
       adviser that provides ongoing services to the fund, if the engagement
       relates directly to the operations and financial reporting of the fund.

    6. The Committee is authorized to delegate, to the extent permitted by
       law, pre-approval responsibilities to one or more members of the
       Committee who shall report to the Committee regarding approved services
       at the Committee's next regularly scheduled meeting. The Committee is
       also authorized to adopt policies and procedures which govern the
       pre-approval of audit, audit-related, tax and other services provided by
       the independent accountants to the funds or to a service provider as
       referenced in Paragraph 5, provided however, that any such policies and
       procedures are detailed as to particular services, the Audit Committee is
       informed of each service, and any such policies and procedures do not
       include the delegation of the Audit Committee's responsibilities under
       the Securities Exchange Act of 1934 or applicable rules or listing
       requirements.

    7. To monitor the independent auditor of each fund throughout the
       engagement to attempt to identify: conflicts of interest between
       management and the independent auditor as a result of employment
       relationships; the provision of prohibited non-audit services to a fund
       by its independent auditor; violations of audit partner rotation
       requirements; and prohibited independent auditor compensation
       arrangements whereby individuals employed by the auditor are compensated
       based on selling non-audit services to the fund. The independent auditors
       should promptly contact the Audit Committee or its Chair about any
       significant issue or disagreement concerning a fund's accounting
       practices or financial statements that is not resolved to their
       satisfaction or if Section 10A(b) of the Exchange Act has been
       implicated.

    8. To meet with independent auditors, including private meetings, as
       necessary, management's internal auditors, and the funds' senior
       management (i) to review the arrangements for and scope of the annual
       audit and any special audits; (ii) to review the form and substance of
       the funds' financial statements and reports, including each fund's
       disclosures under "Management's Discussion of Fund Performance" and to
       discuss any matters of concern relating to the funds' financial
       statements, including any adjustments to such statements recommended by
       the independent accountants, or other results of an audit; (iii) to
       consider the independent accountants' comments with respect to the funds'
       financial policies, procedures and internal accounting controls and
       management's responses thereto; (iv) to review the resolution of any
       disagreements between the independent accountants and management
       regarding the funds' financial reporting; and (v) to review the form of
       opinion the independent accountants propose to render to the Board and
       shareholders. The Audit Committee should request from the independent
       auditors a frank assessment of management.

    9. With respect to any listed fund, to consider whether it will recommend
       to the Board of Trustees that the audited financial statements be
       included in a fund's annual report. The Board delegates to the Audit
       Committee the authority to release the funds' financial statements for
       publication in the annual and semi-annual report, subject to the Board's
       right to review and ratify such financial statements following
       publication. With respect to each fund, to review and discuss with each
       fund's management and independent auditor the


                                       14


       funds' audited financial statements and the matters about which Statement
       on Auditing Standards No. 61 (Codification of Statements on Auditing
       Standards, AU [sec]380) requires discussion. The Audit Committee shall
       prepare an annual committee report for inclusion where necessary in the
       proxy statement of a fund relating to its annual meeting of security
       holders or in any other filing required by the SEC's rules.

   10. To receive and consider reports on the audit functions of the
       independent auditors and the extent and quality of their auditing
       programs.

   11. To assist the Board of Trustees in monitoring the Office of the Chief
       Compliance Officer (the "CCO") by:

      o Reviewing, no less frequently than annually, the CCO's report on the
        operation of the compliance programs of the funds and compliance
        programs of the funds' adviser, sub-advisers, principal underwriter,
        administrator, and transfer agent (collectively, "service providers").

      o Reviewing matters relating to the compliance programs of the funds and
        the compliance programs of their service providers and compliance
        matters relating to the funds and their service providers as may be
        presented to the Committee by the CCO.

      o Making recommendations to the Board of Trustees regarding changes to
        the funds' compliance program, as may be necessary or appropriate from
        time to time.

      o Reviewing the compliance programs for proposed service providers to the
        funds, including subadvisers, and making recommendations regarding
        approval of such compliance programs to the Board of Trustees.

      o Reviewing regulatory inquiries relating to the funds and their service
        providers as may be presented to the Committee by the CCO.

      o Reviewing the CCO's goals and objectives and making recommendations to
        the Board of Trustees regarding the CCO's compensation, including bonus
        and merit components.

      o Reviewing the CCO's annual budget and making recommendations to the
        Board of Trustees regarding its approval and the amount of such budget
        that should be an expense of the funds.

   12. To obtain and review, at least annually, a report by the independent
       auditor describing: the firm's internal quality-control procedures; any
       material issues raised by the most recent internal quality-control
       review, or peer review, of the firm, or by any inquiry or investigation
       by governmental or professional authorities, within the preceding five
       years, respecting one or more independent audits carried out by the firm,
       and any steps taken to deal with any such issues; and all relationships
       between the independent auditor and each fund, including the disclosures
       required by any applicable Independence Standards Board Standard. The
       Audit Committee shall engage in an active dialogue with each independent
       auditor concerning any disclosed relationships or services that might
       impact the objectivity and independence of the auditor.

   13. To review with the independent auditor any problems that may be
       reported to it arising out of a fund's accounting, auditing or financial
       reporting functions and management's response, and to receive and
       consider reports on critical accounting policies and practices and
       alternative treatments discussed with management.

   14. To review the procedures for allocating fund brokerage, the allocation
       of trades among various accounts under management and the fees and other
       charges for fund brokerage.

   15. To receive and consider reports from the independent auditors regarding
       reviews of the operating and internal control structure of custodian
       banks and transfer agents, including procedures to safeguard fund assets.


   16. To monitor securities pricing procedures and review their
       implementation with management, management's internal auditors,
       independent auditors and others as may be required.

   17. To establish and monitor, or cause to be established and monitored,
       procedures for the receipt, retention, and treatment of complaints
       received by a fund regarding accounting, internal accounting controls, or
       auditing matters, and the confidential, anonymous submission by employees
       of the investment adviser, administrator, principal underwriter or any
       other provider of accounting-related services for a listed fund, as well
       as employees of the fund, if any, regarding questionable accounting or
       auditing matters, as and when required by applicable rules or listing
       requirements. The procedures currently in effect are attached as Exhibit
       A.

   18. To report regularly to the Board of Trustees, including providing the
       Audit Committee's conclusions with respect to the independent auditor and
       the funds' financial statements and accounting controls.


                                       15


     E. Subcommittees. The Audit Committee may, to the extent permitted by
applicable law, form and delegate authority to one or more subcommittees
(including a subcommittee consisting of a single member), as it deems
appropriate from time to time under the circumstances. Any decision of a
subcommittee to preapprove audit or non-audit services shall be presented to
the full Audit Committee at its next meeting.

     F. Additional Responsibilities. The Committee shall serve as the
"qualified legal compliance committee" (as such term is defined in 17 CFR Part
205)("QLCC"), the duties of which are listed on Exhibit B to this charter; and
shall also perform other tasks assigned to it from time to time by the Board of
Trustees, and will report findings and recommendations to the Board of
Trustees, as appropriate.

     G. Funding. Each fund shall provide for appropriate funding, as determined
by the Audit Committee, in its capacity as a committee of the Board of
Trustees, for payment of:

     1. Compensation to any registered public accounting firm engaged for the
        purpose of preparing or issuing an audit report or performing other
        audit, review or attest services for the fund.

     2. Compensation to any counsel, advisers, experts or consultants engaged by
        the Audit Committee under Paragraph J of this charter.

     3. Ordinary administrative expenses of the Audit Committee that are
        necessary or appropriate in carrying out its duties.

     H. Governance. One member of the Committee shall be appointed as chair.
The chair shall be responsible for leadership of the Committee, including
scheduling meetings or reviewing and approving the schedule for them, preparing
agendas or reviewing and approving them before meetings, presiding over
meetings, and making reports to the Board of Trustees, as appropriate. The
designation of a person as an "audit committee financial expert", within the
meaning of the rules under Section 407 of the Sarbanes-Oxley Act of 2002, shall
not impose any greater responsibility or liability on that person than the
responsibility and liability imposed on such person as a member of the
Committee, nor shall it decrease the duties and obligations of other Committee
members or the Board of Trustees. Any additional compensation of Audit
Committee members shall be as determined by the Board of Trustees. No member of
the Audit Committee may receive, directly or indirectly, any consulting,
advisory or other compensatory fee from a fund, other than fees paid in his or
her capacity as a member of the Board of Trustees or a committee of the Board
of Trustees. The members of the Audit Committee should confirm that the minutes
of the Audit Committee's meetings accurately describe the issues considered by
the Committee, the process the Committee used to discuss and evaluate such
issues and the Committee's final determination of how to proceed. The minutes
should document the Committee's consideration of issues in a manner that
demonstrates that the Committee acted with due care.

     I. Evaluation. At least annually, the Audit Committee shall evaluate its
own performance, including whether the Audit Committee is meeting frequently
enough to discharge its responsibilities appropriately.

     J. Miscellaneous. The Committee shall meet as often as it deems
appropriate, with or without management, as circumstances require. The
Committee shall have the resources and authority appropriate to discharge its
responsibilities, including the authority to retain special counsel and other
advisers, experts or consultants, at the funds' expense, as it determines
necessary to carry out its duties. The Committee shall have direct access to
such officers of and service providers to the funds as it deems desirable.

     K. Review. The Committee shall review this charter at least annually and
shall recommend such changes to the Board of Trustees as it deems desirable.


                                       16


Exhibit A


          Policy for Raising and Investigating Complaints or Concerns
                     About Accounting or Auditing Matters

As contemplated by the Audit Committee Charter, the Committee has established
the following procedures for:

o the receipt, retention and treatment of complaints received by a fund
  regarding accounting, internal accounting controls or auditing matters; and

o the confidential, anonymous submission by employees of the investment
  adviser, administrator, principal underwriter or any other provider of
  accounting-related services for a listed fund, as well as employees of the
  fund ("covered persons") of concerns regarding questionable accounting or
  auditing matters.


A. Policy Objectives
     The objective of this policy is to provide a mechanism by which complaints
and concerns regarding accounting, internal accounting controls or auditing
matters may be raised and addressed without the fear or threat of retaliation.
The funds desire and expect that covered persons will report any complaints or
concerns they may have regarding accounting, internal accounting controls or
auditing matters.


B. Procedures for Raising Complaints and Concerns
     The funds' Secretary shall be responsible for communicating these
procedures to covered persons. Covered persons with complaints regarding
accounting, internal accounting controls or auditing matters or concerns
regarding questionable accounting or auditing matters may submit such
complaints or concerns to the attention of the funds' Secretary by sending a
letter or other writing to the funds' principal executive offices. Complaints
and concerns may be made anonymously. Alternatively, any complaints or concerns
may also be communicated anonymously directly to any member of the Audit
Committee.


C. Procedures for Investigating and Resolving Complaints and Concerns
     If any complaints or concerns regarding internal accounting controls or
auditing matters that could affect the funds are received through the Ethics
Line or any other similar facility maintained by John Hancock Financial
Services, they shall be communicated promptly to the funds' Secretary and shall
be reported by the funds' Secretary to the Audit Committee, promptly or
quarterly according to the guidelines set forth below.

     The funds' Secretary shall report to the Audit Committee as to whether
those responsible for the Ethics Line or similar facility have a procedure in
place to communicate promptly any such complaints or concerns to the funds'
Secretary, and whether any such communication would violate the terms thereof.

     All complaints and concerns received will be promptly forwarded to the
Audit Committee or the chair of the Audit Committee, unless they are determined
to be without merit by Secretary of the funds. If sent only to the chair, the
chair may determine the appropriate response or may refer the issues to the
entire Audit Committee. In any event, the funds' Secretary will provide a
record of all complaints and concerns received (whether or not determined to
have merit) to the Audit Committee quarterly.

     The Audit Committee will evaluate any complaints or concerns received
(including those reported to the committee on a quarterly basis and which the
funds' Secretary has previously determined to be without merit). If the Audit
Committee requires additional information to evaluate any complaint or concern,
it may conduct an investigation, including interviews of persons believed to
have relevant information. The Audit Committee may, in its discretion, assume
responsibility for directing or conducting any investigation or may delegate
such responsibility to another person or entity.

     After its evaluation of the complaint or concern, the Audit Committee will
authorize such follow-up actions, if any, as deemed necessary and appropriate
to address the substance of the complaint or concern. The funds reserve the
right to take whatever action the Audit Committee believes appropriate, up to
and including discharge of any employee deemed to have engaged in improper
conduct.

     Regardless of whether a complaint or concern is submitted anonymously, the
Audit Committee will strive to keep all complaints and concerns and the
identity of those who submit them and participate in any investigation as
confidential as possible, limiting disclosure to those with a business need to
know or as required by law or recommended by legal counsel.


                                       17


     No covered person shall penalize or retaliate against any other covered
person for reporting a complaint or concern, unless it is determined that the
complaint or concern was made with knowledge that it was false. The funds will
not tolerate retaliation against any covered person for submitting, or for
cooperating in the investigation of, a complaint or concern. Moreover, any such
retaliation is unlawful and may result in criminal action. Any retaliation will
warrant disciplinary action against the offending party, up to and including
termination of employment.

     John Hancock Advisers, LLC shall include this policy in its employee
manual and shall distribute, at least annually, the policy to all of its
employees.

     The funds' Secretary shall retain records of all complaints and concerns
received, and the disposition thereof, for five years.


D. Notification of Others
     At any time during an evaluation or investigation of a complaint or
concern, the chair of the Audit Committee may notify the funds' CCO, the QLCC,
or any other party with a need to know of the receipt of a complaint or concern
and/or the progress or results of any review and/or investigation of a
complaint or concern. The chair of the Audit Committee may provide such level
of detail as may be necessary to allow the appropriate consideration by such
parties in light of the funds' ongoing obligations, including, but not limited
to, disclosure obligations or any required officer certifications.


                                       18


EXHIBIT B - QUALIFIED LEGAL COMPLIANCE COMMITTEE ("QLCC") DUTIES AND
                               RESPONSIBILITIES

   o The QLCC shall adopt written procedures for the confidential receipt,
     retention, and consideration of any report of evidence of a material
     violation.

   o The QLCC has the authority and responsibility, once a report of evidence
     of a material violation by a fund, its officers, directors, employees or
     agents has been received by the QLCC:

     1. to inform the CLO and CEO of such report (except in the case where the
        reporting attorney reasonably believes that it would be futile to report
        evidence of a material violation to the CLO and CEO, and has informed
        the QLCC of such belief); and

     2. to determine whether an investigation is necessary or appropriate,
        and, if it determines an investigation is necessary or appropriate, to:

      (A) notify the Board of Trustees;

      (B) notify the funds' CCO;

      (C) initiate an investigation, which may be conducted either by the CLO
          or by outside attorneys; and

      (D) retain such additional expert personnel as the QLCC deems necessary;

      and, at the conclusion of such investigation, to:

      (A) recommend, by majority vote, that the fund implement an appropriate
          response to evidence of a material violation; and

      (B) inform the CLO, CEO the funds' CCO and the Board of Trustees of the
          results of any such investigation and the appropriate remedial
          measures.

     3. by majority vote, to take all other appropriate action, including
        notifying the U.S. Securities and Exchange Commission in the event that
        the fund fails in any material respect to implement an appropriate
        response that the QLCC has recommended.


                                       19


                                 ATTACHMENT 2


                            AUDIT COMMITTEE REPORT

     The information contained in this report shall not be deemed to be
"soliciting material" or "filed" or incorporated by reference in future filings
with the SEC, or subject to the liabilities of Section 18 of the Securities
Exchange Act of 1934, except to the extent that we specifically incorporate it
by reference into a document filed under the Securities Act of 1933 or the
Securities Exchange Act of 1934.

     The Audit Committee has reviewed and discussed with the Fund's management
and Deloitte & Touche LLP the audited financial statements of the Fund
contained in the Annual Report on Form N-CSR for the 2005 fiscal year. The
Audit Committee has also discussed with Deloitte & Touche LLP the matters
required to be discussed pursuant to SAS No. 61 (Codification of Statements on
Auditing Standards, AU Section 380), which includes, amount other items,
matters related to the conduct of the audit of the Fund's financial statements.


     The Audit Committee has received and reviewed the written disclosures and
the letter from Deloitte & Touche LLP required by Independence Standards Board
Standard No. 1 (Independence Discussions with Audit Committees), and has
discussed with Deloitte & Touche LLP its independence from the Funds.

     Based on the review and discussions referred to above, the Audit Committee
recommended to the Board of Trustees that the audited financial statements be
included in each Fund's Annual Report on Form N-CSR for filing with the
Securities and Exchange Commission.

                       Submitted by the Audit Committee

                            Richard P. Chapman, Jr.
                               Charles L. Ladner
                            John A. Moore, Chairman
                             Patti McGill Peterson


                                       20


                                 ATTACHMENT 3

                              JOHN HANCOCK FUNDS
                          GOVERNANCE COMMITTEE CHARTER

     A. Composition. The Governance Committee shall be composed entirely of
Trustees who are "independent" as defined in the rules of the New York Stock
Exchange ("NYSE") and the NASDAQ Stock Market, Inc. ("NASDAQ") or any other
exchange, as applicable, and are not "interested persons" as defined in the
Investment Company Act of 1940 of any of the funds, or of any fund's investment
adviser or principal underwriter (the "Independent Trustees") who are
designated for membership from time to time by the Board of Trustees. The
Chairman of the Board shall be a member of the Governance Committee.

     B. Overview. The overall charter of the Governance Committee is to make
recommendations to the Board on issues related to corporate governance
applicable to the Independent Trustees and to the composition and operation of
the Board, and to assume duties, responsibilities and functions to recommend
nominees to the Board, together with such additional duties, responsibilities
and functions as are delegated to it from time to time.

     C. Specific Responsibilities. The Governance Committee shall have the
following duties and powers, to be exercised at such times and in such manner
as the Committee shall deem necessary or appropriate:

    1. Except where the funds are legally required to nominate individuals
       recommended by others, to recommend to the Board of Trustees individuals
       for nomination to serve as Trustees.

    2. To consider, as it deems necessary or appropriate, the criteria for
       persons to fill existing or newly created Trustee vacancies. The
       Governance Committee shall use the criteria and principles set forth in
       Annex A to guide its Trustee selection process.

    3. To consider and recommend the amount of compensation to be paid by the
       funds to the Independent Trustees, including incremental amounts, if any,
       payable to Committee Chairmen, and to address compensation-related
       matters.

    4. To consider and recommend the duties and compensation of the Chairman
       of the Board.

    5. To consider and recommend changes to the Board regarding the size,
       structure, and composition of the Board.

    6. To evaluate, from time to time, the retirement policies for the
       Independent Trustees.

    7. To develop and recommend to the Board guidelines for corporate
       governance ("Corporate Governance Guidelines") for the funds that take
       into account the rules of the NYSE and any applicable law or regulation,
       and to periodically review and assess the Corporate Governance Guidelines
       and recommend any proposed changes to the Board for approval.

    8. To monitor all expenditures of the Board or the Committees or the
       Independent Trustees not otherwise incurred and/or monitored by a
       particular Committee, including, but not limited to: legal, consulting,
       and D&O insurance costs; association dues, including Investment Company
       Institute membership dues; meeting expenditures and policies relating to
       reimbursement of travel expenses and expenses associated with offsite
       meetings; expenses associated with Trustee attendance at educational or
       informational conferences; and publication expenses.

    9. To consider, evaluate and make recommendations and necessary findings
       regarding independent legal counsel and any other advisers, experts or
       consultants, that may be engaged by the Board of Trustees, by the
       Trustees who are not "interested persons" as defined in the Investment
       Company Act of 1940 of any of the funds or any fund's investment adviser
       or principal underwriter, or by the Governance Committee, from time to
       time, other than as may be engaged directly by another Committee.

   10. To periodically review the Board's committee structure and the charters
       of the Board's committees, and recommend to the Board of Trustees changes
       to the committee structure and charters as it deems appropriate.

   11. To coordinate and administer an annual self-evaluation of the Board,
       which will include, at a minimum, a review of its effectiveness in
       overseeing the number of funds in the fund complex and the effectiveness
       of its committee structure.

   12. To report its activities to Board of Trustees and to make such
       recommendations with respect to the matters described above and other
       matters as the Governance Committee may deem necessary or appropriate.


                                       21


     D. Additional Responsibilities. The Committee will also perform other
tasks assigned to it from time to time by the Chairman of the Board or by the
Board of Trustees, and will report findings and recommendations to the Board of
Trustees, as appropriate.

     E. Governance. One member of the Committee shall be appointed as chair.
The chair shall be responsible for leadership of the Committee, including
scheduling meetings or reviewing and approving the schedule for them, preparing
agendas or reviewing and approving them before meetings, and making reports to
the Board of Trustees, as appropriate.

     F. Miscellaneous. The Committee shall meet as often as it deems
appropriate, with or without management, as circumstances require. The
Committee shall have the resources and authority appropriate to discharge its
responsibilities, including the authority to retain special counsel and other
advisers, experts or consultants, at the funds' expense, as it determines
necessary to carry out its duties. The Committee shall have direct access to
such officers of and service providers to the funds as it deems desirable.

     G. Review. The Committee shall review this Charter periodically and
recommend such changes to the Board of Trustees as it deems desirable.


                                       22


                                    ANNEX A


General Criteria

   1. Nominees should have a reputation for integrity, honesty and adherence
      to high ethical standards.

   2. Nominees should have demonstrated business acumen, experience and
      ability to exercise sound judgments in matters that relate to the current
      and long-term objectives of the funds and should be willing and able to
      contribute positively to the decision-making process of the funds.

   3. Nominees should have a commitment to understand the funds, and the
      responsibilities of a trustee/director of an investment company and to
      regularly attend and participate in meetings of the Board and its
      committees.

   4. Nominees should have the ability to understand the sometimes conflicting
      interests of the various constituencies of the funds, including
      shareholders and the management company, and to act in the interests of
      all shareholders.

   5. Nominees should not have, nor appear to have, a conflict of interest
      that would impair their ability to represent the interests of all the
      shareholders and to fulfill the responsibilities of a director/trustee.


Application of Criteria to Existing Trustees
     The renomination of existing Trustees should not be viewed as automatic,
but should be based on continuing qualification under the criteria set forth
above. In addition, the Governance Committee shall consider the existing
Trustee's performance on the Board and any committee.


Review of Shareholder Nominations
     Any shareholder nomination must be submitted in compliance with all of the
pertinent provisions of Rule 14a-8 under the Securities Exchange Act of 1934 in
order to be considered by the Governance Committee. In evaluating a nominee
recommended by a shareholder, the Governance Committee, in addition to the
criteria discussed above, may consider the objectives of the shareholder in
submitting that nomination and whether such objectives are consistent with the
interests of all shareholders. If the Board determines to include a
shareholder's candidate among the slate of its designated nominees, the
candidate's name will be placed on the funds' proxy card. If the Board
determines not to include such candidate among its designated nominees, and the
shareholder has satisfied the requirements of Rule 14a-8, the shareholder's
candidate will be treated as a nominee of the shareholder who originally
nominated the candidate. In that case, the candidate will not be named on the
proxy card distributed with the funds' proxy statement.

     As long as an existing Independent Trustee continues, in the opinion of
the Governance Committee, to satisfy the criteria listed above, the Committee
generally would favor the re-nomination of an existing Trustee rather than a
new candidate. Consequently, while the Governance Committee will consider
nominees recommended by shareholders to serve as trustees, the Governance
Committee may only act upon such recommendations if there is a vacancy on the
Board, or the Governance Committee determines that the selection of a new or
additional Trustee is in the best interests of the fund. In the event that a
vacancy arises or a change in Board membership is determined to be advisable,
the Governance Committee will, in addition to any shareholder recommendations,
consider candidates identified by other means, including candidates proposed by
members of the Governance Committee. The Governance Committee may retain a
consultant to assist the Committee in a search for a qualified candidate.


                                       23


                                 ==============

                                      Thank
                                       You

                                   for mailing
                                   your proxy
                                 card promptly!

                                 ==============











                            [LOGO] John Hancock Funds, LLC
                                   MEMBER NASD
                                   601 Congress Street
                                   Boston, MA 02210-2805

                                   1-800-852-0218
                                   1-800-231-5469 TDD
                                   1-800-843-0090 EASI-Line

                                   www.jhfunds.com

                            [LOGO] WORLDWIDE SPONSOR


                                                                      P90PX 2/06




                  JOHN HANCOCK BANK AND THRIFT OPPORTUNITY FUND
                         Annual Meeting of Shareholders
                                 March 22, 2006

The undersigned  holder of common shares of beneficial  interest of John Hancock
Bank and Thrift Opportunity Fund hereby appoints KEITH F. HARTSTEIN,  WILLIAM H.
KING and ALFRED P. OUELLETTE,  and each of them singly, proxies and attorneys of
the undersigned, with full power of substitution to each, for and in the name of
the  undersigned,  to vote and act upon all  matters  at the  Annual  Meeting of
Shareholders of the Fund to be held on Wednesday,  March 22, 2006 at the offices
of the Fund, 601 Congress Street, Boston,  Massachusetts,  at 9:00 a.m., Eastern
time, and at any and all adjournments  thereof,  in respect of all common shares
of the Fund held by the undersigned or in respect of which the undersigned would
be entitled to vote or act,  with all powers the  undersigned  would  possess if
personally  present.  All proxies previously given by the undersigned in respect
of said meeting are hereby revoked.

--------------------------------------------------------------------------------
PLEASE VOTE, DATE AND SIGN ON REVERSE AND RETURN PROMPTLY IN THE ENCLOSED
ENVELOPE.
--------------------------------------------------------------------------------

Please complete, sign, date and return this proxy in the enclosed envelope as
soon as possible. Please sign exactly as your name or names appear in the box on
the reverse. When signing as Attorney, Executor, Administrator, Trustee or
Guardian, please give your full title as such. If a corporation, please sign in
full corporate name by president or other authorized officer. If a partnership,
please sign in partnership name by authorized person.

--------------------------------------------------------------------------------
    Address Change/Comments (Mark the corresponding box on the reverse side)

--------------------------------------------------------------------------------






[  ] Please Mark Here for Address Change or Comments SEE REVERSE SIDE


    THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES

1.  To elect the following nominees to serve as Trustees of the Fund.

(01) James R. Boyle (02) Ronald R. Dion (03) Charles L. Ladner
(04) John A. Moore

                   FOR                      WITHHOLD
                   ALL     [ ]              FROM ALL   [ ]
                 NOMINEES                   NOMINEES

            [ ] _______________________________________
                 For all nominees except as noted above


--------------------------------------------------------------------------------
                                  JOHN HANCOCK
--------------------------------------------------------------------------------
                         BANK AND THRIFT OPPORTUNITY FUND


 2.   To ratify the selection of                      For    Against  Abstain
      PricewaterhouseCoopers LLP as the Fund's
      Independent registered public accounting firm   [ ]      [ ]      [ ]


Specify your vote by marking the appropriate spaces. If no specification is
made, this proxy will be voted for the nominees named in the proxy statement and
in favor of proposal 2. The persons named as proxies have discretionary
authority, which they intend to exercise in favor of the proposals referred to
and according to their best judgment as to the other matters which may properly
come before the meeting.

Please be sure to sign and date this Proxy.


Signature: ___________ Date: ___________ Signature: ___________  Date: _________




------------------------------------------------------------------------------------------------------------------------------------
                                             [arrow up] FOLD AND DETACH HERE [arrow up]




                                                Vote by Internet or Telephone or Mail
                                                    24 Hours a Day, 7 Days a Week

                                Internet and telephone voting is available through 11PM Eastern Time
                                            the business day prior to annual meeting day.


                 Your Internet or telephone vote authorizes the named proxies to vote your shares in the same manner
                                       as if you marked, signed and returned your proxy card.


---------------------------------------     ---------------------------------------         ----------------------------

             Internet                                 Telephone                                     Mail
    http://www.eproxy.com/bto                       1-800-435-6710

                                                                                         
Use the Internet to vote your proxy.          Use any touch-tone telephone to                  Mark, sign and date
Have your proxy card in hand when             vote your proxy. Have your proxy                  your proxy card
you access the web site. You will be    OR    card in hand when you call. You will   OR               and
prompted to enter your control                be prompted to enter your control                 return it in the
number, located in the box below, to          number, located in the box below,               enclosed postage-paid
create and submit an electronic               and then follow the directions                       envelope.
ballot.                                       given.
---------------------------------------     ---------------------------------------         ----------------------------


                                        If you vote your proxy by Internet or by telephone,
                                           you do NOT need to mail back your proxy card.





John Hancock                                          Mellon
------------                                          Mellon Investor Services
JOHN HANCOCK FUNDS                                    A Mellon Financial Company

--------------------------------------------------------------------------------

                                 Welcome to the
                  John Hancock Bank and Thrift Opportunity Fund
                             2006 Proxy Voting Site

                          Annual Meeting of Shareholders
                                  March 22, 2006


The undersigned  holder of common shares of beneficial  interest of John Hancock
Bank and Thrift Opportunity Fund hereby appoints KEITH F. HARTSTEIN,  WILLIAM H.
KING and ALFRED P. OUELLETTE,  and each of them singly, proxies and attorneys of
the undersigned, with full power of substitution to each, for and in the name of
the  undersigned,  to vote and act upon all  matters  at the  Annual  Meeting of
Shareholders of the Fund to be held on Wednesday,  March 22, 2006 at the offices
of the Fund, 601 Congress Street, Boston,  Massachusetts,  at 9:00 a.m., Eastern
time, and at any and all adjournments  thereof,  in respect of all common shares
of the Fund held by the undersigned or in respect of which the undersigned would
be entitled to vote or act,  with all powers the  undersigned  would  possess if
personally  present.  All proxies previously given by the undersigned in respect
of said meeting are hereby revoked.

      --------------------------------------------------------------------
               Click here to continue to the secure voting site.
      --------------------------------------------------------------------
          If your browser does not support SSL encryption, click here.



--------------------------------------------------------------------------------




John Hancock                                          Mellon
------------                                          Mellon Investor Services
JOHN HANCOCK FUNDS                                    A Mellon Financial Company

--------------------------------------------------------------------------------

          Welcome to the John Hancock Bank and Thrift Opportunity Fund
                             2006 Proxy Voting Site

    Your Internet vote authorizes the Proxies to vote your shares in the same
         manner as if you marked, signed, and returned your Proxy Card.

                     The Board of Trustees recommends a vote
                             FOR Proposals 1 and 2.

      -------------------------------------------------------------------
             Click Here To Vote As The Board Of Trustees Recommends
      -------------------------------------------------------------------

         ---------------------------------------------------------------
                Click Here To Vote Individually On Each Proposal
         ---------------------------------------------------------------


--------------------------------------------------------------------------------






John Hancock                                          Mellon
------------                                          Mellon Investor Services
JOHN HANCOCK FUNDS                                    A Mellon Financial Company
--------------------------------------------------------------------------------



          To Vote Separately On Each Proposal - Check The Boxes Below:
          ------------------------------------------------------------

================================================================================
               The Board recommends a vote FOR Proposals 1 and 2.
================================================================================

================================================================================
  PROPOSAL 1

  To elect the following nominees to serve as Trustees of the Fund
================================================================================


  FOR ALL [ ]         WITHHOLD ALL [ ]   FOR ALL EXCEPT[ ]
                                          [ ]01 James R. Boyle
                                          [ ]02 Ronald R. Dion
                                          [ ]03 Charles L. Ladner
                                          [ ]04 John A. Moore
================================================================================

================================================================================
  PROPOSAL 2


To ratify the selection of PricewaterhouseCoopers  LLP as the Fund's Independent
registered public accounting firm
================================================================================

  For[ ]                  Against[ ]            Abstain[ ]
================================================================================


In their discretion, the Proxies are authorized to vote upon such other business
as  may  properly  come  before  the  meeting,  or at any  adjournment  thereof.
--------------------------------------------------------------------------------

                        --------------------------------
                        Click Here To Register Your Vote
                        --------------------------------

BACK
----

================================================================================


John Hancock                                          Mellon
------------                                          Mellon Investor Services
JOHN HANCOCK FUNDS                                    A Mellon Financial Company
--------------------------------------------------------------------------------


                       THANK YOU FOR VOTING ELECTRONICALLY

                                 Voting Summary

                        Your Control Number:

Trustees:
You Voted:
Proposal 2:
You Voted:
To change your address click here.

                              THANK YOU FOR VOTING

Your  vote has  been  successfully  recorded  and will be  tabulated  by  Mellon
Investor Services within 24 hours. It is not necessary for you to mail back your
voting card.

If any of the above information is incorrect, return to the proxy
ballot form by using the BACK feature of your browser program.

To vote another Proxy - CLICK HERE Please exit your browser program as you
normally do.