My Son John

Helen Hayes Lucille Jefferson

Van Heflin Stedman

Dean Jagger Dan Jefferson

Robert Walker John Jefferson

Minor Watson Dr. Carver

Frank McHugh Father O'Dowd

Richard Jaeckel Chuck Jefferson

James Young Ben Jefferson

Jimmie Dundee Taxi Driver (uncredited)

Douglas Evans Government Employee (uncredited)

Nancy Hale Nurse (uncredited)

Sam Harris Professor at Graduation Ceremony (uncredited)

Todd Karns Bedford (uncredited)

Leo McCarey John Jefferson (voice) (uncredited)

Lee Miller Policeman at Shooting Scene (uncredited)

David Newell FBI Agent (uncredited)

Vera Stokes Secretary (uncredited)

Fred Sweeney Cleaner (uncredited)

Margaret Wells Nurse (uncredited)