EXHIBIT 21



BANK ONE CORPORATION Subsidiaries



As of December 31, 2002, the Corporation had
the subsidiaries listed below, all of which were wholly-owned except for directors qualifying shares or as otherwise indicated.



|Names of Subsidiaries                           |  | Jurisdiction of Organization
|----------------------------------------------- |  | ----------------------------
|Affiliated Banks Building Co.                   |  | Colorado                    
|Banc One ABS Corporation                        |  | Ohio                        
|Banc One Arizona Investment Corporation         |  | Arizona                     
|Banc One Building Management Corporation        |  | Wisconsin                   
|Banc One Capital Holdings Corporation           |  | Ohio                        
|Banc One Capital Funding Corporation            |  | Ohio                        
|Banc One Capital Services Corporation           |  | Ohio                        
|Banc One Management and Consulting Corporation  |  | Ohio                        
|Banc One Asset Solutions Corporation            |  | Texas                       
|Bonnet Resources Corporation                    |  | Ohio                        
|Banc One Securities Corporation                 |  | Ohio                        
|BOCP Holdings Corporation                       |  | Ohio                        
|Banc One Capital Partners III, Ltd. (81%)       |  | Ohio                        
|College Park Holdings LLC                       |  | Ohio                        
|Banc One Capital Partners IV, Ltd.              |  | Ohio                        
|Banc One Capital Partners V, Ltd. (81%)         |  | Ohio                        
|Banc One Capital Partners VI, Ltd. (81%)        |  | Ohio                        
|Banc One Capital Partners VII, Ltd. (82%)       |  | Ohio                        
|BOCP Energy Partners, L.P. (99%)                |  | Ohio                        
|Banc One Capital Partners VIII, Ltd. (83%)      |  | Ohio                        
|Banc One Capital Partners IX, LLC (80%)         |  | Ohio                        
|Banc One Capital Partners X, Ltd. (85%)         |  | Ohio                        
|Banc One Capital Partners XI, Ltd.              |  | Ohio                        
|Banc One Capital Partners BC, LLC (80%)         |  | Ohio                        
|Banc One Capital BIDCO1998, LLC                |  | Louisiana                   
|Banc One Capital Partners Holdings, Ltd. (85%)  |  | Ohio                        
|Banc One Capital Partners, LLC                  |  | Delaware                    
|Banc One Capital Partners II, LLC               |  | Delaware                    
|Banc One Stonehenge Capital Fund Wisconsin, LLC |  | Delaware                    
|BOCF, LLC (80%)                                 |  | Delaware                    
|BOCNY, LLC                                      |  | Delaware                    
|BOCP II Limited Liability Company (80%)         |  | Ohio                        
|BOME Investors, Inc.                            |  | Delaware                    
|BOME Investors II, LLC                          |  | Delaware                    
|BOME Investors III, LLC                         |  | Delaware                    





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|Names of Subsidiaries                         |  | Jurisdiction of Organization
|--------------------------------------------- |  | ----------------------------
|Tax Credit Acquisitions, LLC                  |  | Ohio                        
|Tax Credit Acquisitions II, LLC               |  | Ohio                        
|Banc One Financial Corporation                |  | Delaware                    
|Banc One Capital Corporation                  |  | Delaware                    
|Banc One Capital Management LLC               |  | Delaware                    
|Banc One Opportunity Fund LP                  |  | Delaware                    
|Bank One Investment Corporation               |  | Delaware                    
|OEP Holding Corporation                       |  | Delaware                    
|Banc One Equity Capital Fund II, LLC (99.5%)  |  | Delaware                    
|Banc One Equity Capital SBIC Fund II, L.L.C.  |  | Delaware                    
|OEP Star Holding Corporation                  |  | Delaware                    
|OEP Star General LLC                          |  | Delaware                    
|OEP Management LLC (93.75%)                   |  | Delaware                    
|One Equity Partners, LLC                      |  | Delaware                    
|One Equity Marine B.V.                        |  | Netherlands                 
|European Shipyards Holdings B.V.              |  | Netherlands                 
|HDW Holdings GmbH                             |  | Germany                     
|Howaldtswerke-Deutsche Werft AG               |  | Germany                     
|OEP Star Limited LLC                          |  | Delaware                    
|One Equity Partners-Europe GmbH               |  | Germany                     
|Polaroid Holding Company                      |  | Delaware                    
|First Chicago Capital Corporation             |  | Delaware                    
|One Mortgage Partners LLC                     |  | Delaware                    
|One Mortgage Partners Corp.                   |  | Vermont                     
|First Chicago Equity Corporation              |  | Illinois                    
|First Chicago Leasing Corporation             |  | Delaware                    
|Dearborn Street FSC I, Inc.                   |  | US Virgin Islands           
|FCL Ship Five, Inc.                           |  | Delaware                    
|Cooper Project, L.L.C.                        |  | Delaware                    
|FCL Ship Fourteen, Inc.                       |  | Delaware                    
|FCL Ship Fifteen, Inc.                        |  | Delaware                    
|First Chicago Lease Holdings, Inc.            |  | Delaware                    
|Palo Verde Leasing Corporation                |  | Delaware                    
|First Chicago Lease Investments, Inc.         |  | Delaware                    
|First Chicago Lease Investments Two, Inc.     |  | Delaware                    
|Simsbury Associates Limited Partnership (50%) |  | Connecticut                 
|First Chicago Lease Investments Three, Inc.   |  | Delaware                    
|Simsbury Leasing Joint Venture (50%)          |  | Connecticut                 
|First Chicago Lease Investments Four, Inc.    |  | Delaware                    
|First Chicago Leasing FSC, Inc.               |  | US Virgin Islands           



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|Names of Subsidiaries                                |  | Jurisdiction of Organization
|---------------------------------------------------- |  | ----------------------------
|FM Holdings I, Inc.                                  |  | Delaware                    
|FM Holdings II, Inc.                                 |  | Delaware                    
|Fountains FSC, Ltd.                                  |  | Bermuda                     
|GHML Holdings I, Inc.                                |  | Delaware                    
|Simsbury Properties, Inc. (50%)                      |  | Delaware                    
|Skyhigh Corporation                                  |  | Delaware                    
|Oak Street FSC, Ltd.                                 |  | Bermuda                     
|Banc One Capital Markets, Inc.                       |  | Delaware                    
|Banc One Hedging Services Corporation                |  | Delaware                    
|Banc One Leasing Services Corporation                |  | Delaware                    
|BOHS (Cayman), Ltd.                                  |  | Cayman Islands              
|Bond Securitization LLC                              |  | Delaware                    
|Banc One Insurance Holdings, Inc.                    |  | Arizona                     
|Banc One Insurance Agency Inc.                       |  | Wisconsin                   
|Banc One Insurance Company                           |  | Vermont                     
|Banc One Life Insurance Company                      |  | Arizona                     
|Congress Insurance Agency, Inc.                      |  | Arizona                     
|Banc One Kentucky Insurance Company                  |  | Kentucky                    
|Banc One Management Corporation                      |  | Ohio                        
|Banc One Deferred Benefits Corporation               |  | Ohio                        
|Banc One Risk Management Company                     |  | Delaware                    
|Banc One Mezzanine Corporation                       |  | Delaware                    
|Banc One Neighborhood Development Corporation        |  | Ohio                        
|Banc One Community Development/Wisconsin Corporation |  | Ohio                        
|Banc One Realty Columbus Corporation                 |  | Ohio                        
|Banc One Student Loan Funding Corporation            |  | Ohio                        
|Bank One, Dearborn, National Association             |  | United States               
|Bank One, Delaware, National Association.            |  | United States               
|First USA Services, Inc.                             |  | Delaware                    
|First USA Management Services, Inc.                  |  | Delaware                    
|Bank One, Kentucky, National Association             |  | United States               
|Banc One Kentucky Leasing Corporation                |  | Kentucky                    
|Banc One Kentucky Vehicle Leasing Company            |  | Kentucky                    
|BOC Realty Kentucky, Inc.                            |  | Kentucky                    
|Liberty Payment Services, Inc.                       |  | Kentucky                    
|Liberty Properties Incorporated                      |  | Kentucky                    
|Bank One, National Association (Chicago)             |  | United States               
|American National Corporation                        |  | Delaware                    
|ANRELCO, Inc.                                        |  | Illinois                    
|Anexsys, Holdings, Inc.                              |  | Delaware                    
|Anexsys, LLC (64%)                                   |  | Illinois                    
|Arizona Trust Deed Corporation                       |  | Arizona                     
|Asset One Louisiana, Inc.                            |  | Louisiana                   



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|Names of Subsidiaries                              |  | Jurisdiction of Organization
|-------------------------------------------------- |  | ----------------------------
|B-ONE Australia Superannuation Fund Pty Ltd.       |  | Australia                   
|Banc One Arizona Leasing Corporation               |  | Arizona                     
|Banc One AutoLease LTD.                            |  | Delaware                    
|Banc One Building Corporation                      |  | Illinois                    
|Banc One Community Development Corporation         |  | Delaware                    
|Banc One Equipment Finance, Inc.                   |  | Indiana                     
|Banc One Leasing Corporation                       |  | Ohio                        
|Banc One Louisiana Leasing Corporation             |  | Louisiana                   
|Banc One National Processing Corporation           |  | Delaware                    
|Banc One Operations Services Corporation           |  | Arizona                     
|Banc One Project Resources International, Inc.     |  | Delaware                    
|Banc One Real Estate Investment Corp.              |  | Delaware                    
|One Rock Real Estate Mezzanine Fund I, LLC (60%)   |  | Delaware                    
|Banc One Realty Advisors, Inc.                     |  | Delaware                    
|Banc One Wisconsin Investment Services Corporation |  | Wisconsin                   
|Bank One Canada                                    |  | Canada                      
|Bank One Delaware Inc.                             |  | Delaware                    
|Bank One Equity Investors-BIDCO, Inc.              |  | Louisiana                   
|Bank One Exchange Corporation                      |  | Illinois                    
|Bank One Foundation                                |  | Illinois                    
|Bank One ICS, Inc.                                 |  | Delaware                    
|Bank One International Corporation                 |  | United States               
|Bank One International Holdings Corporation        |  | United States               
|BONE Australia Limited                            |  | Australia                   
|Bank One Europe Ltd.                               |  | United Kingdom              
|Bank One Leasing (UK) Limited                      |  | United Kingdom              
|Bank One Limited                                   |  | United Kingdom              
|Bank One (Mexico), S.A.                            |  | Mexico                      
|Bank One Nominees Limited                          |  | United Kingdom              
|BOHK Limited                                       |  | Hong Kong                   
|BOL Canada I, Inc.                                 |  | Delaware                    
|BOL Canada I Sub, Inc.                             |  | Delaware                    
|BO Leasing I ULC                                   |  | Canada                      
|BOL (C) II, Inc.                                   |  | Delaware                    
|BOL Canada II Sub, Inc.                            |  | Delaware                    
|BOL Canada II Trust                                |  | Delaware                    
|BO Leasing II ULC                                  |  | Canada                      
|BOL Canada III, Inc.                               |  | Delaware                    
|BOL Canada III Sub, Inc.                           |  | Delaware                    
|BO Leasing III ULC                                 |  | Canada                      
|Createdesign Limited                               |  | Wales                       
|Dearborn Merchant Services, Inc.                   |  | US Virgin Islands           
|Paymentech Canada (52.4%)                          |  | Canada                      



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|Names of Subsidiaries                                      |  | Jurisdiction of Organization
|---------------------------------------------------------- |  | ----------------------------
|Paymentech Canada Debit, Inc.                              |  | Canada                      
|First Chicago Asia Holdings Ltd.                           |  | Cayman Islands              
|First Chicago Brazil Investments, Inc.                     |  | Delaware                    
|First Chicago Chile Investments, Inc.                      |  | Delaware                    
|Equifin (50%)                                              |  | United States               
|Monroe Aircraft-Ireland Limited                            |  | Ireland                     
|One Group Asset Management (Ireland) Limited               |  | Ireland                     
|BOC Realty Arizona, Inc.                                   |  | Arizona                     
|BOC Realty Illinois, Inc.                                  |  | Illinois                    
|City Place International, Inc.                             |  | Delaware                    
|FC Energy Finance I, Inc.                                  |  | Delaware                    
|FC Energy Finance II, Inc.                                 |  | Delaware                    
|Antrim 1998, LLC (99%)                                     |  | Delaware                    
|FCNBD Mortgage Investments, Inc.                           |  | Delaware                    
|FCNBD Technology Holdings, Inc.                            |  | Delaware                    
|First Commerce Community Development Corporation           |  | Louisiana                   
|Cabbage Alley Partnership, a Louisiana Limited Partnership |  | Louisiana                   
|FNBC Leasing Corporation                                   |  | Delaware                    
|Luke FSC, Ltd.                                             |  | Bermuda                     
|Orleans Street FSC, Inc.                                   |  | US Virgin Islands           
|FNBC Properties Inc.                                       |  | Delaware                    
|Southeast Holding Company, Ltd.                            |  | South Carolina              
|FSK, Inc.                                                  |  | Delaware                    
|Global Trading Operations, Inc.                            |  | Delaware                    
|Indiana DPC, Inc.                                          |  | Indiana                     
|Michigan DPC, Inc.                                         |  | Michigan                    
|Midwest Audit Services, Inc.                               |  | Illinois                    
|Milwaukee Investment Holding Company                       |  | Nevada                      
|MPR, Inc.                                                  |  | Delaware                    
|NBD Indiana Properties, Inc.                               |  | Indiana                     
|NBD Leasing, Inc.                                          |  | Indiana                     
|Niagara SPE, LLC                                           |  | Illinois                    
|PacProp, Inc.                                              |  | Delaware                    
|South Cutler, Inc.                                         |  | Delaware                    
|Team Life Insurance Company                                |  | Texas                       
|Tri-State Minerals, Inc.                                   |  | Louisiana                   
|Valley Bank Building, Inc.                                 |  | Arizona                     
|Valley National Investors, Inc.                            |  | Arizona                     
|Washington Street Foods, Inc.                              |  | Arizona                     
|Bank One, National Association (Ohio)                      |  | United States               
|Banc One Acceptance Corporation                            |  | Ohio                        
|Box Leasing Corporation                                    |  | Ohio                        
|Banc One Interactive Delivery Corporation                  |  | Ohio                        



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|Names of Subsidiaries                                                                |  | Jurisdiction of Organization
|------------------------------------------------------------------------------------ |  | ----------------------------
|Banc One Investment Advisors Corporation                                             |  | Ohio                        
|Banc One High Yield Partners, LLC (51%)                                              |  | Ohio                        
|Banc One Private Mortgage Insurance Company, Inc.                                    |  | Maine                       
|Banc One POS Services Corporation                                                    |  | Ohio                        
|FDC Offer Corporation (54.8%)                                                        |  | Delaware                    
|Paymentech, Inc.                                                                     |  | Delaware                    
|Paymentech Management Resources, Inc.                                                |  | Delaware                    
|Paymentech Employee Resources LLC                                                    |  | Delaware                    
|Banc One Payment Services, LLC (50%; 25% owned by Banc One POS Services
Corporation) |  | Delaware                    
|BOPS Holdings, LLC (99%)                                                             |  | Delaware                    
|Paymentech, L.P.                                                                     |  | Delaware                    
|Merchant-Link, LLC                                                                   |  | Delaware                    
|BONA Capital I, LLC                                                                  |  | Delaware                    
|BONA Capital II, LLC                                                                 |  | Delaware                    
|BOC Properties Ohio, Inc.                                                            |  | Ohio                        
|BOC Realty Ohio, Inc.                                                                |  | Ohio                        
|Congress Life Insurance Company                                                      |  | Delaware                    
|Bank One, Oklahoma, National Association                                             |  | United States               
|Lexco Petroleum, Inc.                                                                |  | Oklahoma                    
|Liberty Property Management Company                                                  |  | Oklahoma                    
|Bank One Trust Company, National Association                                         |  | United States               
|Bank One, West Virginia, National Association                                        |  | United States               
|BOWV Realty West Virginia, Inc.                                                      |  | West Virginia               
|Bank One, Wheeling-Steubenville, National Association                                |  | United States               
|Banc One Loan Services Corporation                                                   |  | Pennsylvania                
|BOI Leasing Corporation                                                              |  | Indiana                     
|BOTRCN Corporation                                                                   |  | Delaware                    
|FCTC General, Inc.                                                                   |  | Delaware                    
|Finance One Corporation                                                              |  | Ohio                        
|Banc One Financial Services, Inc.                                                    |  | Indiana                     
|Banc One Consumer Discount Company, A Non-banking Affiliate of Bank One
Corporation  |  | Indiana                     
|Banc One Financial Services of Minnesota, Inc.                                       |  | Minnesota                   
|Banc One Financial Services of New York, Inc.                                        |  | New York                    
|Banc One Financial Services of Tennessee, Inc.                                       |  | Tennessee                   
|Banc One Financial Services of West Virginia, Inc.                                   |  | West Virginia               
|First Chicago Realty Services Corporation                                            |  | Delaware                    
|First Chicago Trust Company (Cayman), Ltd.                                           |  | Cayman Islands              
|First Chicago Trust Company of New York                                              |  | New York                    
|FNW Capital, Inc.                                                                    |  | Illinois                    
|NBD Community Development Corporation                                                |  | Michigan                    



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|Names of Subsidiaries                       |  | Jurisdiction of Organization
|------------------------------------------- |  | ----------------------------
|NBD Equity Corp.                            |  | Michigan                    
|NBD Neighborhood Revitalization Corporation |  | Indiana                     
|One Group Dealer Services, Inc.             |  | Delaware                    
|One Group Administrative Services, Inc.     |  | Delaware                    
|The One Services Corporation                |  | Michigan                    
|B-1 Life Reinsurance International Limited  |  | Ireland                     
|Sterling Assurance Company                  |  | Vermont                     



The
names of certain other subsidiaries of the Corporation have been omitted because such subsidiaries, considered in the aggregate, would not constitute a significant subsidiary.



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