Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
WEST CATHERINE
   2. Issuer Name and Ticker or Trading Symbol
CAPITAL ONE FINANCIAL CORP [COF] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Vice President
(Last)
(First)
(Middle)
1680 CAPITAL ONE DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
07/22/2005
(Street)

MCLEAN, VA 22102		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock (1) 07/22/2005   M   19,166 A $ 48.54 105,961 D  
Common Stock (1) 07/22/2005   M   7,752 A $ 48.54 113,713 D  
Common Stock (1) 07/22/2005   M   17,248 A $ 34.13 130,961 D  
Common Stock (1) 07/22/2005   S   44,166 D $ 85 86,795 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $ 48.54 07/22/2005   M     7,752   (2) 10/17/2006 Common Stock 7,752 $ 0 57,248 D  
Employee Stock Option (Right to Buy) $ 48.54 07/22/2005   M     19,166   (3) 10/17/2011 Common Stock 19,166 $ 0 28,403 D  
Employee Stock Option (Right to Buy) $ 34.13 07/22/2005   M     17,248   (4) 12/06/2012 Common Stock 17,248 $ 0 21,152 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WEST CATHERINE
1680 CAPITAL ONE DRIVE
MCLEAN, VA 22102		       Executive Vice President  

Signatures

 By: Polly A. Nyquist (POA on File)   07/26/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This transaction was executed pursuant to a trading plan entered into by the Reporting Person on November 12, 2004 in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
(2) This option becomes exercisable in 33 1/3% increments beginning on October 18, 2002 and annually from that date thereafter.
(3) This option became exercisable if, among other possible criteria, the Company achieved a cumulative earnings per share of more than $5.03 in four consecutive fiscal quarters prior to December 31, 2004. This criterion was fulfilled on March 31, 2004 and these stock options vested in their entirety on April 22, 2004.
(4) This option became exercisable in 33 1/3% increments beginning on December 6, 2003 and annually from that date thereafter.

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