James Oliver Cromwell (born January 27, 1940), sometimes credited as Jamie Cromwell, is an American film and television actor. He has been nominated for an Oscar, two Emmy Awards, and four Screen Actors Guild Awards during his career.

Born in Los Angeles but raised in Manhattan and educated at Middlebury College and Carnegie Tech, James Cromwell - the son of noted film director John Cromwell (I) - studied acting at Carnegie-Mellon. He went into the theater (like both his parents) doing everything from Shakespeare to experimental plays. He started doing TV in 1974, gaining some notice in a recurring role as Archie Bunker's buddy Stretch Cunningham in "All in the Family" (1971), made his film debut in 1976, and goes back to the stage periodically. Some of his more noted film roles have been in Revenge of the Nerds (1984) and the surprise hit about a charming pig, Babe (1995). He garnered some of the best reviews of his career - many of which said he should have received an Oscar - for his role as a corrupt, conniving police captain in L.A. Confidential (1997).