Pricing Supplement No. 6  Dated October 22, 2002       Filed Pursuant to: Rule 424(b)(3)
(To Prospectus dated June 28, 2000 and                 File No.: 333-38756
Prospectus Supplement dated October 26, 2000)


                             BANK ONE CORPORATION
                          MEDIUM-TERM NOTES, SERIES C


                                                                                 
Date of Issue: October 30, 2002   [ ] Fixed Rate       [ ] Commercial Paper Rate Note     [ ] LIBOR Reuters
               -----------------  [X] Senior           [ ] Federal Funds Rate Note        [X] LIBOR Telerate
Maturity Date: October 31, 2005   [ ] Subordinated     [ ] CD Rate Note                   [ ] Prime Rate Note
               -----------------  [ ] CMT Rate Note    [ ] LIBOR Note                     [ ] Treasury Rate Note
                                                                                          [ ] Other


CUSIP: 06422NGP3
       -------------------

Principal Amount: $75,000,000.00
                  -------------------------

Issue Price (As a Percentage of Principal Amount): 100%
                                                   ------------------

Interest Rate/Initial Interest Rate: Not Available
                                     ------------------------

Interest Payment Dates: 30th of January, April, July, October
                        -------------------------------------------------------

Interest Reset Dates: 30th of January, April, July, October
                      -------------------------------------------------------

Index Maturity: 90 days
                -----------------------------------------------------------

Designated CMT Maturity Index:
                               -------------------------------

Designated CMT Telerate Page:
                              -------------------------------

Spread: +20 Basis Points
        --------------------------

Spread Multiplier: None
                   --------------

Minimum Interest Rate: None
                       --------------

Maximum Interest Rate: None
                       --------------

Interest Payment Period: October 30, 2002 to January 30, 2003 and quarterly
                         ------------------------------------------------------
                         thereafter, up to but excluding the interest payment
                         ----------------------------------------------------
                         date
                         ----

Interest Rate Reset Period: October 30, 2002 to January 30, 2003 and quarterly
                            --------------------------------------------------
                            thereafter, up to but excluding the interest payment
                            ------------------------------------------------
                            date
                            ----

Redemption Date(s) or Period: None
                              --------------

Optional Repayment Date(s): None
                            --------------

Calculation Agent (If Applicable): Bank One, NA
                                   ----------------------

Additional Terms:

This Pricing Supplement may be used by Banc One Capital Markets, Inc. ("BOCM"),
a wholly owned subsidiary of the issuer, in connection with offer and sales
related to secondary market transactions in the Notes. BOCM may act as principal
or agent in such transactions. Such sales will be made at prices related to the
prevailing market prices at the time of sale.

On June 15, 2002, Arthur Andersen LLP ("Arthur Andersen"), Bank One
Corporation's former independent public accountants, was convicted of federal
obstruction of justice. Bank One decided to no longer engage Arthur Andersen as
its principal accountants in 2001 and selected KPMG LLP to serve as its
independent public accountants for fiscal 2001. Arthur Andersen audited Bank
One's financial statements for the fiscal year ended December 31, 1999 and
December 31, 2000. As a result, you may have no effective remedy against Arthur
Andersen in connection with a material misstatement or omission in those
financial statements, particularly in the event that Arthur Andersen ceases to
exist or becomes insolvent as a result of the conviction or other proceedings
against it.