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