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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1. Name and Address of Reporting Person * WALLACE CHRISTINE W   2. Issuer Name and Ticker or Trading Symbol NCR CORP [NCR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior V.P., Human Resources (Last) (First) (Middle) 1700 S. PATTERSON BOULEVARD 3. Date of Earliest Transaction (Month/Day/Year) 05/18/2005 (Street) DAYTON, OH 45479 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 05/18/2005   M   20,000 A $ 17.375 44,684.3466 D   Common Stock 05/18/2005   M   24,000 A $ 19.0938 68,684.3466 D   Common Stock 05/18/2005   M   9,000 A $ 20.595 77,684.3466 D   Common Stock 05/18/2005   S   48,000 D $ 37.5146 30,197.2941 (1) 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)

$ 17.375 (2)

05/18/2005

M

20,000

(3)

09/17/2009

Common Stock

30,000 (4)

$ 0

0

D

Employee Stock Option (Right to Buy)

$ 19.0938 (5)

05/18/2005

M

24,000

(6)

01/03/2010

Common Stock

24,000 (7)

$ 0

0

D

Employee Stock Option (Right to Buy)

$ 20.595 (8)

05/18/2005

M

9,000

(9)

01/24/2012

Common Stock

9,000 (10)

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WALLACE CHRISTINE W 1700 S. PATTERSON BOULEVARD DAYTON, OH 45479			Senior V.P., Human Resources

Signatures

Nelson F. Greene, Attorney-in-fact for Nelson F. Greene		05/20/2005
**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)	Includes 512.947542 shares acquired under the NCR Employee Stock Purchase Plan in April 2005.
(2)	Previously reported price was $34.75. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the previously reported price of $34.75 split to $17.3750.
(3)	The option vests in 3 equal annual installments beginning on 09/17/2000.
(4)	Previously reported number of securities was 15,000. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the reported number of securities of 15,000 increased to 30,000, 10,000 of which were exercised on March 8, 2005, and 20,000 of which are being exercised.
(5)	Previously reported price was $38.19. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the previously reported price of $38.19 split to $19.0938.
(6)	The option vests in 3 equal annual installments beginning on 01/03/2001.
(7)	Previously reported number of securities was 12,000. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the reported number of securities of 12,000 increased to 24,000, all of which are being exercised.
(8)	Previously reported price was $41.19. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the previously reported price of $41.19 split to $20.5950.
(9)	The option vests in 3 equal annual installments beginning on 01/24/2003.
(10)	Previously reported number of securities was 4,500. On January 21, 2005, the common stock of NCR Corporation split 2-for-1, with the result that the previously reported number of securities of 4,500 increased to 9,000, all of which are being exercised.

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