Ray Milland (Jonathan Trumbo)
Barbara Stanwyck (Lily Bishop)
Barry Fitzgerald (Michael Fabian)
George Coulouris (Pharaoh Coffin)
Albert Dekker (Mr. Pike)
Will Wright (Chairman)
Philip Van Zandt (Mr. Gunce)
Minerva Urecal (Emma)
Phil Tead (Eddie, the Cashier)
Kathrun Sheldon (Gaunt Wagon Woman)
Fred Santley (Actor/Actress)
Joey Ray (Pennock's partner)
Lee Phelps (Actor/Actress)
Frances Morris (Elwyn's mother)
Dick Wessel (Blacksmith)
Joe Whitehead (Actor/Actress)
Crane Whitley (Abe Clinton)
Russ Clark (Man)
Pepito Pérez (Actor/Actress)
George Barton (Actor/Actress)
Phil Dunham (Actor/Actress)
Anthony Quinn (Don Luis)
George Melford (Delegate)
Francis Ford (Actor/Actress)
Ian Wolfe (James K. Polk)
Louis Mason (Actor/Actress)
George Magrill (Actor/Actress)
Rex Lease (Actor/Actress)
Virginia Farmer (Second Town Matron)
Tom Fadden (Actor/Actress)
Ralph Dunn (Man)
Jeff Corey (Man)
Eduardo Ciannelli (Padre)
Tom Chatterton (Actor/Actress)
Lane Chandler (Man)
Argentina Brunetti (Elvira)
Don Beddoe (Stark)
Jack Baxley (Cowhand)
Stanley Andrews (Willoughby)
Harry Hayden (Barrett)
Gertrude W. Hoffman (Old Woman)
Ethan Laidlaw (Reb)
Frank S. Hagney (Actor/Actress)
Jesse Graves (Actor/Actress)
Joe Gilbert (Actor/Actress)
Sam Flint (Higgins)
Frank Ferguson (Actor/Actress)
Si Jenks (Actor/Actress)
Roman Bohnen (Col. Stuart)
Howard Freeman (Sen. Creel)
Julia Faye (Wagon Woman)
Frank Faylen (Whitey)
Gavin Muir (Booth Pennock)
James Burke (Pokey)