<PAGE>


    As filed with the Securities and Exchange Commission on January 30, 2003

                                                      Registration No. 333-_____
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                              Washington D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              BANK ONE CORPORATION
             (Exact name of registrant as specified in its charter)

               DELAWARE                                   31-0738296
      (State or other jurisdiction of                     (I.R.S. employer
      incorporation or organization)                      identification number)

      1 Bank One Plaza
      Chicago, Illinois                                   60670
      (Address of Principal Executive Offices)            (Zip Code)


                              BANK ONE CORPORATION
                           Savings and Investment Plan
                            (Full title of the Plan)

                              Christine A. Edwards
           Executive Vice President, Secretary and Chief Legal Officer
                              BANK ONE CORPORATION
                                1 Bank One Plaza
                             Chicago, Illinois 60670
                     (Name and address of agent for service)

                                 (312) 732-3551
          (Telephone number, including area code, of agent for service)

                                    Copy to:
                             Laurence Goldman, Esq.
                              BANK ONE CORPORATION
                                1 Bank One Plaza
                             Chicago, Illinois 60670

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

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------------
                                                               Proposed            Proposed
                                                               Maximum              Maximum
   Title of Securities to be Registered     Amount to be    Offering Price         Aggregate               Amount of
                                             Registered     Per Share/(1)/    Offering Price/(1)/     Registration Fee/(1)/
---------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>             <C>               <C>                     <C>
      Common Stock, $0.01 Par Value          15,000,000         $37.06            $555,900,000              $51,142.80
                                               shares
 Interests in the Savings and Investment
                   Plan
                                                 (2)

---------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1)  Estimated solely for the purpose of calculating the registration fee in
     accordance with Rule 457(h), based upon the average of the high and low
     prices of Common Stock reported on the New York Stock Exchange Composite
     Transactions Tape for January 27, 2003.
(2)  In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
     Registration Statement also covers an indeterminate amount of interests to
     be offered or sold pursuant to the Plan.

<PAGE>

           PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

        The following documents heretofore filed by Registrant (File No.
001-15323) with the Commission are incorporated by reference in the Registration
Statement:

        (a)    Registrant's Annual Report on Form 10-K for the fiscal year ended
               December 31, 2001;

        (b)    Registrant's Quarterly Reports on Form 10-Q dated March 31, 2002;
               June 30, 2002; and September 30, 2002;

        (c)    Registrant's Current Reports on Form 8-K dated January 17, 2002;
               April 17, 2002; July 17, 2002 (2 filings); August 12, 2002;
               October 16, 2002; and January 16, 2003;

        (d)    The description of Registrant's Common Stock set forth in
               Registrant's Current Report on Form 8-K dated October 2, 1998;
               and

        (e)    The Plan's Annual Report on Form 11-K for the year ended December
               31, 2001.

        All documents filed by Registrant or the Plan pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), subsequent to the date hereof and prior to the filing of a
post-effective amendment which indicates that all the securities offered hereby
have been sold or which deregisters all such securities then remaining unsold,
shall be deemed to be incorporated by reference into the Registration Statement
and to be a part hereof from the date of filing of such documents. Any statement
contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded for purposes of the
Prospectus to the extent that a statement contained herein or in any other
subsequently filed document which also is or is deemed to be incorporated by
reference herein modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of the Prospectus.

        The Registrant's consolidated financial statements as of December 31,
2000 and 1999, and the two years ended December 31, 2000 included in the Annual
Report on Form 10-K for the year ended December 31, 2001, incorporated herein by
reference, have been audited by Arthur Andersen LLP ("Arthur Andersen"). On
February 23, 2001, the Registrant decided to no longer engage Arthur Andersen as
its independent public accountants and appointed KPMG LLP to serve as its
independent public accountants for the fiscal year 2001. In 2002, Arthur
Andersen ceased practicing before the Securities and Exchange Commission. As a
result, the Registrant has been unable to obtain Arthur Andersen's written
consent to the incorporation by reference into this Registration Statement of
their audit report with respect to the Registrant's financial statements which
are incorporated herein by reference. Under these circumstances, Rule 437a under
the Securities Act of 1933, as amended (the "Securities Act") permits the
Registrant to file this Registration Statement without a written consent from
Arthur Andersen. Because Arthur Andersen has not consented to the inclusion
of their report in this Registration

                                       -2-

<PAGE>

Statement, Arthur Andersen will not have any liability under Section 11(a) of
the Securities Act for any untrue statements of a material fact contained in the
financial statements audited by Arthur Andersen and incorporated by reference
herein or any omission of a material fact required to be stated therein.
Accordingly, investors will not be able to assert a claim against Arthur
Andersen under Section 11(a) of the Securities Act for any purchases of
securities under this Registration Statement.

Item 4. Description of Securities.

        This item is inapplicable as the securities to be offered are registered
under Section 12 of the Exchange Act.

Item 5. Interests of Named Experts and Counsel.

        The validity of the securities offered hereby has been passed upon for
the Registrant by Christine A. Edwards, Esq., Chief Legal Officer, Executive
Vice President and Secretary of the Registrant. Christine A. Edwards owns, or
has rights to acquire under the Registrant's employee benefit plans, an
aggregate of less than 1% of the common stock of the Registrant.

Item 6. Indemnification of Directors and Officers.

        The Registrant is a Delaware corporation. Section 145 of the General
Corporation Law of the State of Delaware contains detailed provisions on
indemnification of directors and officers of a Delaware corporation against
expenses, judgments, fines and amounts paid in settlement, actually and
reasonably incurred in connection with certain litigation.

        The Registrant's Restated Certificate of Incorporation, as amended,
provides for indemnification of directors and officers. The provision provides
that any person shall to the fullest extent permitted by the General Corporation
Law of the State of Delaware be indemnified and reimbursed by the Registrant for
expenses and liabilities imposed upon the person in connection with any action,
suit or proceeding, civil or criminal, or threat thereof, in which the person
may be involved by reason of the person being or having been a director,
officer, employee or agent of the Registrant, or of any corporation or
organization which the person served in any capacity at the request of the
Registrant. The Certificate, as permitted by the General Corporation Law of the
State of Delaware, also provides that a director of the Registrant shall not be
personally liable to the Registrant or its stockholders for monetary damages for
breach of fiduciary duty as a director, except for liability (i) for any breach
of the director's duty of loyalty to the Registrant or its stockholders, (ii)
for acts or omissions not in good faith or which involve intentional misconduct
or a knowing violation of law, (iii) under Section 174 of the General
Corporation Law of the State of Delaware or (iv) for any transaction from which
the director derived any improper personal benefit.

        The Registrant's directors and officers are covered by an insurance
policy indemnifying them against certain civil liabilities, including
liabilities under the federal securities laws, which they might incur in such
capacity.

        Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers or persons controlling the
Registrant pursuant to the foregoing provisions, the Registrant has been
informed that in the opinion of the Commission, such

                                      -3-

<PAGE>

indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable.

Item 7. Exemption from Registration Claimed.

        This item is inapplicable.

                                      -4-

<PAGE>

Item 8. Exhibits.

        This Registration Statement includes the following Exhibits:

     Exhibit
     Number                     Description of Exhibits
     ------                     -----------------------

     5              Opinion of Counsel to Registrant as to legality of
                    securities being issued.

     23(a)          Consent of KPMG LLP.

     23(b)          Consent of Counsel to Registrant (included in Exhibit 5
                    hereof).

     23(c)          Consent of Washington, Pittman & McKeever, LLC.

     23(d)          Statement Regarding Consent of Arthur Andersen LLP.

     24             Powers of Attorney.

Item 9. Undertakings.

        The undersigned Registrant hereby undertakes:

        (1)  To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement: (i) to include any
prospectus required by Section 10(a)(3) of the Securities Act; (ii) to reflect
in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement. Notwithstanding the
foregoing, any increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed that which was
registered) and any deviation from the low or high end of the estimated maximum
offering range may be reflected in the form of prospectus filed with the
Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume
and price represent no more than a 20% change in the maximum aggregate offering
price set forth in the "Calculation of Registration Fee" table in the effective
Registration Statement; and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in the Registration
Statement or any material change to such information in the Registration
Statement.

        Provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if
the Registration Statement is on Form S-8, and the information required to be
included in a post-effective amendment by those paragraphs is contained in
periodic reports filed by the Registrant pursuant to Section 13 or Section 15(d)
of the Exchange Act that are incorporated by reference in the Registration
Statement.

        (2)  That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (3)  To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

                                      -5-

<PAGE>


        (4)  That, for purposes of determining any liability under the
Securities Act, each filing of Registrant's annual report pursuant to Section
13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing
of an employee benefit plan's annual report pursuant to Section 15(d) of the
Exchange Act) that is incorporated by reference in the Registration Statement
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

        (5)  That, insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of Registrant pursuant to Registrant's indemnification provisions, or otherwise,
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than payment by Registrant of
expenses incurred or paid by a director, officer or controlling person of the
Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the
securities being registered, Registrant will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed by
the final adjudication of such issue.

                                      -6-

<PAGE>

SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing this Registration Statement on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Chicago, State of
Illinois, on the 30th day of January, 2003.

                                                BANK ONE CORPORATION


                                                By:   /s/ HEIDI MILLER
                                                    ----------------------------
                                                      Heidi Miller
                                                      Chief Financial Officer

        Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on January 30, 2003.

         Signature                               Title
         ---------                               -----

/s/ JOHN H. BRYAN*                               Director
-------------------------------
John H. Bryan

/s/ JAMES S. CROWN*                              Director
-------------------------------
James S. Crown

/s/ JAMES DIMON*                                 Director and
-------------------------------                  Principal Executive Officer
James Dimon

/s/ MAUREEN A. FAY*                              Director
-------------------------------
Maureen A. Fay

/s/ JOHN R. HALL*                                Director
-------------------------------
John R. Hall

/s/ LABAN P. JACKSON, JR.*                       Director
-------------------------------
Laban P. Jackson, Jr.

/s/ JOHN W. KESSLER*                             Director
-------------------------------
John W. Kessler

/s/ RICHARD A. MANOOGIAN*                        Director
-------------------------------
Richard A. Manoogian

/s/ DAVID C. NOVAK*                              Director
-------------------------------
David C. Novak

/s/ JOHN W. ROGERS, JR.*                         Director
-------------------------------
John W. Rogers, Jr.

                                      -7-

<PAGE>

/s/ FREDERICK P. STRATTON, JR.*            Director
-------------------------------
Frederick P. Stratton, Jr.

/s/ MELISSA J. MOORE*                      Principal Accounting Officer
-------------------------------
Melissa J. Moore

/s/ HEIDI MILLER                           Principal Financial Officer
-------------------------------
Heidi Miller

_______________________________
*The undersigned, by signing her name hereto, does hereby sign this Registration
Statement on behalf of each of the above-indicated directors and officers of the
Registrant pursuant to a power of attorney signed by such directors and
officers.

                                              /s/ HEIDI MILLER
                                       ------------------------------
                                              Heidi Miller
                                              Attorney-in-Fact

                                      -8-

<PAGE>

                                  EXHIBIT INDEX

Exhibit
Number                              Description of Exhibits
------                              -----------------------

5            Opinion of Counsel to Registrant as to legality of securities being
             issued.

23(a)        Consent of KPMG LLP.

23(b)        Consent of Counsel to Registrant (included in Exhibit 5 hereof).

23(c)        Consent of Washington, Pittman & McKeever, LLC.

23(d)        Statement Regarding Consent of Arthur Andersen LLP.

24           Power of Attorney.
[{"type": "S-8", "sequence": "1", "filename": "ds8.txt", "description": "FORM S-8", "secsgml_size_bytes": 19449}]
{"company-data": {"conformed-name": "BANK ONE CORP", "cik": "0001067092", "assigned-sic": "6021", "irs-number": "310738296", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-102830", "film-number": "03531830"}, "business-address": {"street1": "1 BANK ONE PLAZA", "city": "CHICAGO", "state": "IL", "zip": "60670", "phone": "3127324000"}, "mail-address": {"street1": "ONE FIRST NATIONAL PLAZA", "city": "CHICAGO", "state": "IL", "zip": "60670"}}
As filed with the Securities and Exchange Commission on January 30, 2003

                                                      Registration No. 333-_____
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                              Washington D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                              BANK ONE CORPORATION
             (Exact name of registrant as specified in its charter)

               DELAWARE                                   31-0738296
      (State or other jurisdiction of                     (I.R.S. employer
      incorporation or organization)                      identification number)

      1 Bank One Plaza
      Chicago, Illinois                                   60670
      (Address of Principal Executive Offices)            (Zip Code)

                              BANK ONE CORPORATION
                           Savings and Investment Plan
                            (Full title of the Plan)

                              Christine A. Edwards
           Executive Vice President, Secretary and Chief Legal Officer
                              BANK ONE CORPORATION
                                1 Bank One Plaza
                             Chicago, Illinois 60670
                     (Name and address of agent for service)

                                 (312) 732-3551
          (Telephone number, including area code, of agent for service)

                                    Copy to:
                             Laurence Goldman, Esq.
                              BANK ONE CORPORATION
                                1 Bank One Plaza
                             Chicago, Illinois 60670

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

                         CALCULATION OF REGISTRATION FEE
---------------------------------------------------------------------------------------------------------------------------
                                                               Proposed            Proposed
                                                               Maximum              Maximum
   Title of Securities to be Registered     Amount to be    Offering Price         Aggregate               Amount of
                                             Registered     Per Share/(1)/    Offering Price/(1)/     Registration Fee/(1)/
---------------------------------------------------------------------------------------------------------------------------
Common Stock, $0.01 Par Value          15,000,000         $37.06            $555,900,000              $51,142.80
                                               shares
 Interests in the Savings and Investment
                   Plan
                                                 (2)

---------------------------------------------------------------------------------------------------------------------------
(1)  Estimated solely for the purpose of calculating the registration fee in
     accordance with Rule 457(h), based upon the average of the high and low
     prices of Common Stock reported on the New York Stock Exchange Composite
     Transactions Tape for January 27, 2003.
(2)  In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
     Registration Statement also covers an indeterminate amount of interests to
     be offered or sold pursuant to the Plan.
PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

        The following documents heretofore filed by Registrant (File No.
001-15323) with the Commission are incorporated by reference in the Registration
Statement:

        (a)    Registrant's Annual Report on Form 10-K for the fiscal year ended
               December 31, 2001;

        (b)    Registrant's Quarterly Reports on Form 10-Q dated March 31, 2002;
               June 30, 2002; and September 30, 2002;

        (c)    Registrant's Current Reports on Form 8-K dated January 17, 2002;
               April 17, 2002; July 17, 2002 (2 filings); August 12, 2002;
               October 16, 2002; and January 16, 2003;

        (d)    The description of Registrant's Common Stock set forth in
               Registrant's Current Report on Form 8-K dated October 2, 1998;
               and

        (e)    The Plan's Annual Report on Form 11-K for the year ended December
               31, 2001.

        All documents filed by Registrant or the Plan pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), subsequent to the date hereof and prior to the filing of a
post-effective amendment which indicates that all the securities offered hereby
have been sold or which deregisters all such securities then remaining unsold,
shall be deemed to be incorporated by reference into the Registration Statement
and to be a part hereof from the date of filing of such documents. Any statement
contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded for purposes of the
Prospectus to the extent that a statement contained herein or in any other
subsequently filed document which also is or is deemed to be incorporated by
reference herein modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of the Prospectus.

        The Registrant's consolidated financial statements as of December 31,
2000 and 1999, and the two years ended December 31, 2000 included in the Annual
Report on Form 10-K for the year ended December 31, 2001, incorporated herein by
reference, have been audited by Arthur Andersen LLP ("Arthur Andersen"). On
February 23, 2001, the Registrant decided to no longer engage Arthur Andersen as
its independent public accountants and appointed KPMG LLP to serve as its
independent public accountants for the fiscal year 2001. In 2002, Arthur
Andersen ceased practicing before the Securities and Exchange Commission. As a
result, the Registrant has been unable to obtain Arthur Andersen's written
consent to the incorporation by reference into this Registration Statement of
their audit report with respect to the Registrant's financial statements which
are incorporated herein by reference. Under these circumstances, Rule 437a under
the Securities Act of 1933, as amended (the "Securities Act") permits the
Registrant to file this Registration Statement without a written consent from
Arthur Andersen. Because Arthur Andersen has not consented to the inclusion
of their report in this Registration

                                       -2-
Statement, Arthur Andersen will not have any liability under Section 11(a) of
the Securities Act for any untrue statements of a material fact contained in the
financial statements audited by Arthur Andersen and incorporated by reference
herein or any omission of a material fact required to be stated therein.
Accordingly, investors will not be able to assert a claim against Arthur
Andersen under Section 11(a) of the Securities Act for any purchases of
securities under this Registration Statement.

Item 4. Description of Securities.

        This item is inapplicable as the securities to be offered are registered
under Section 12 of the Exchange Act.

Item 5. Interests of Named Experts and Counsel.

        The validity of the securities offered hereby has been passed upon for
the Registrant by Christine A. Edwards, Esq., Chief Legal Officer, Executive
Vice President and Secretary of the Registrant. Christine A. Edwards owns, or
has rights to acquire under the Registrant's employee benefit plans, an
aggregate of less than 1% of the common stock of the Registrant.

Item 6. Indemnification of Directors and Officers.

        The Registrant is a Delaware corporation. Section 145 of the General
Corporation Law of the State of Delaware contains detailed provisions on
indemnification of directors and officers of a Delaware corporation against
expenses, judgments, fines and amounts paid in settlement, actually and
reasonably incurred in connection with certain litigation.

        The Registrant's Restated Certificate of Incorporation, as amended,
provides for indemnification of directors and officers. The provision provides
that any person shall to the fullest extent permitted by the General Corporation
Law of the State of Delaware be indemnified and reimbursed by the Registrant for
expenses and liabilities imposed upon the person in connection with any action,
suit or proceeding, civil or criminal, or threat thereof, in which the person
may be involved by reason of the person being or having been a director,
officer, employee or agent of the Registrant, or of any corporation or
organization which the person served in any capacity at the request of the
Registrant. The Certificate, as permitted by the General Corporation Law of the
State of Delaware, also provides that a director of the Registrant shall not be
personally liable to the Registrant or its stockholders for monetary damages for
breach of fiduciary duty as a director, except for liability (i) for any breach
of the director's duty of loyalty to the Registrant or its stockholders, (ii)
for acts or omissions not in good faith or which involve intentional misconduct
or a knowing violation of law, (iii) under Section 174 of the General
Corporation Law of the State of Delaware or (iv) for any transaction from which
the director derived any improper personal benefit.

        The Registrant's directors and officers are covered by an insurance
policy indemnifying them against certain civil liabilities, including
liabilities under the federal securities laws, which they might incur in such
capacity.

        Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers or persons controlling the
Registrant pursuant to the foregoing provisions, the Registrant has been
informed that in the opinion of the Commission, such

                                      -3-
indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable.

Item 7. Exemption from Registration Claimed.

        This item is inapplicable.

                                      -4-
Item 8. Exhibits.

        This Registration Statement includes the following Exhibits:

     Exhibit
     Number                     Description of Exhibits
     ------                     -----------------------

     5              Opinion of Counsel to Registrant as to legality of
                    securities being issued.

     23(a)          Consent of KPMG LLP.

     23(b)          Consent of Counsel to Registrant (included in Exhibit 5
                    hereof).

     23(c)          Consent of Washington, Pittman & McKeever, LLC.

     23(d)          Statement Regarding Consent of Arthur Andersen LLP.

     24             Powers of Attorney.

Item 9. Undertakings.

        The undersigned Registrant hereby undertakes:

        (1)  To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement: (i) to include any
prospectus required by Section 10(a)(3) of the Securities Act; (ii) to reflect
in the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement. Notwithstanding the
foregoing, any increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed that which was
registered) and any deviation from the low or high end of the estimated maximum
offering range may be reflected in the form of prospectus filed with the
Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume
and price represent no more than a 20% change in the maximum aggregate offering
price set forth in the "Calculation of Registration Fee" table in the effective
Registration Statement; and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in the Registration
Statement or any material change to such information in the Registration
Statement.

        Provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if
the Registration Statement is on Form S-8, and the information required to be
included in a post-effective amendment by those paragraphs is contained in
periodic reports filed by the Registrant pursuant to Section 13 or Section 15(d)
of the Exchange Act that are incorporated by reference in the Registration
Statement.

        (2)  That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (3)  To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

                                      -5-
(4)  That, for purposes of determining any liability under the
Securities Act, each filing of Registrant's annual report pursuant to Section
13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing
of an employee benefit plan's annual report pursuant to Section 15(d) of the
Exchange Act) that is incorporated by reference in the Registration Statement
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

        (5)  That, insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of Registrant pursuant to Registrant's indemnification provisions, or otherwise,
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than payment by Registrant of
expenses incurred or paid by a director, officer or controlling person of the
Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the
securities being registered, Registrant will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed by
the final adjudication of such issue.

                                      -6-
SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing this Registration Statement on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Chicago, State of
Illinois, on the 30th day of January, 2003.

                                                BANK ONE CORPORATION

                                                By:   /s/ HEIDI MILLER
                                                    ----------------------------
                                                      Heidi Miller
                                                      Chief Financial Officer

        Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on January 30, 2003.

         Signature                               Title
         ---------                               -----

/s/ JOHN H. BRYAN*                               Director
-------------------------------
John H. Bryan

/s/ JAMES S. CROWN*                              Director
-------------------------------
James S. Crown

/s/ JAMES DIMON*                                 Director and
-------------------------------                  Principal Executive Officer
James Dimon

/s/ MAUREEN A. FAY*                              Director
-------------------------------
Maureen A. Fay

/s/ JOHN R. HALL*                                Director
-------------------------------
John R. Hall

/s/ LABAN P. JACKSON, JR.*                       Director
-------------------------------
Laban P. Jackson, Jr.

/s/ JOHN W. KESSLER*                             Director
-------------------------------
John W. Kessler

/s/ RICHARD A. MANOOGIAN*                        Director
-------------------------------
Richard A. Manoogian

/s/ DAVID C. NOVAK*                              Director
-------------------------------
David C. Novak

/s/ JOHN W. ROGERS, JR.*                         Director
-------------------------------
John W. Rogers, Jr.

                                      -7-
/s/ FREDERICK P. STRATTON, JR.*            Director
-------------------------------
Frederick P. Stratton, Jr.

/s/ MELISSA J. MOORE*                      Principal Accounting Officer
-------------------------------
Melissa J. Moore

/s/ HEIDI MILLER                           Principal Financial Officer
-------------------------------
Heidi Miller

_______________________________
*The undersigned, by signing her name hereto, does hereby sign this Registration
Statement on behalf of each of the above-indicated directors and officers of the
Registrant pursuant to a power of attorney signed by such directors and
officers.

                                              /s/ HEIDI MILLER
                                       ------------------------------
                                              Heidi Miller
                                              Attorney-in-Fact

                                      -8-
EXHIBIT INDEX

Exhibit
Number                              Description of Exhibits
------                              -----------------------

5            Opinion of Counsel to Registrant as to legality of securities being
             issued.

23(a)        Consent of KPMG LLP.

23(b)        Consent of Counsel to Registrant (included in Exhibit 5 hereof).

23(c)        Consent of Washington, Pittman & McKeever, LLC.

23(d)        Statement Regarding Consent of Arthur Andersen LLP.

24           Power of Attorney.