Margaret O'Hara / Knowles
Shirley Temple
Shawn O'Hara
Barry Fitzgerald
Himself (archive footage)
Seabiscuit
Seabiscuit (close-ups)
Sea Sovereign
War Admiral
Wong the O'Hara's Cook
Joe Wong
Miss Finch
Ezelle Poule
Race Commentator
Joe Hernandez
Libby
Madame Sul-Te-Wan
Ted Knowles
Lon McCallister
Mrs. Charles S. Howard
Rosemary DeCamp
George Carson
Donald MacBride
Charles S. Howard
Pierre Watkin
Thomas Milford
William Forrest
Hal J. Moore
Clem McCarthy
Walkin' Murphy, Milford's Boy
Sugarfoot Anderson
Director
David Butler
Screenplay
John Taintor Foote
Makeup Artist
Karl Herlinger