- Mickey Rooney
- 'Snapper' Sinclair, aka Fred St. Clair
- Patricia Ellis
- Patricia Barrington
- Dennis Moore
- Cliff Barrington
- Willie Best
- Noah
- Gordon Hart
- Judge Adams
- Bill Elliott
- Robert Bates
- Virginia Brissac
- Aunt Julia
- Charles C. Wilson
- Tex Reardon
- Joseph Crehan
- Secretary C.D. Burch
- Mary Treen
- Nurse
- Edward Keane
- Fred Yates
- Raymond Brown
- Col. Carter
- Bob Tansill
- Butch - Jockey
- Frank Faylen
- Ben - Bookie
- Robert Emmett Keane
- Nick
- Charley Foy
- Arnold Roach
- James Eagles
- Sunny Burnett
- Crauford Kent
- Sir Oliver Martin
- George Beranger
- William J. Cooper
- Lowden Adams
- Patricia's Butler
- Glen Cavender
- Bettor at Racetrack
- Hal K. Dawson
- Mr. Watson
- Ralph Dunn
- Race Starter
- Jonathan Hale
- Secretary M.L. Lyon
- Stuart Holmes
- Racetrack Official
- Milton Kibbee
- Veterinarian
- Charles Marsh
- Photographer
- Billy McClain
- Uncle Lew
- Anne Nagel
- Hat Check Girl
- John J. Richardson
- British Jockey
- Cliff Saum
- Race Track Detective
- Ferdinand Schumann-Heink
- Court Clerk
- David Thursby
- British Horse Groom
- Emmett Vogan
- Railroad Lawyer
- Tom Wilson
- Court Policeman
- Jack Wise
- Man Talking with Nick
