Thomas J. Watson, May 1914-May 1956
Thomas J. Watson, Jr., May 1956-June 1971
T. Vincent Learson, June 1971-January 1973
Frank T. Cary, January 1973-January 1981
John Opel, January 1981-January 1985
John F. Akers, February 1985-April 1993
Louis V. Gerstner, Jr., April 1993-March 2002
Samuel J. Palmisano, March 2002-December 2011
Virginia “Ginni” Rometty, effective January 2012
