- Louis Hayward
- Louis XIV / Philippe of Gascony
- Joan Bennett
- Maria Theresa
- Warren William
- D'Artagnan
- Joseph Schildkraut
- Fouquet
- Alan Hale
- Porthos
- Walter Kingsford
- Colbert
- Miles Mander
- Aramis
- Bert Roach
- Athos
- Marion Martin
- Mlle. de la Valliere
- Montagu Love
- Spanish Ambassador
- Doris Kenyon
- Queen Anne
- Albert Dekker
- Louis XIII
- Nigel De Brulier
- Cardinal Richelieu
- William Royle
- Commandant of Bastille
- Boyd Irwin
- Lord High Constable of France
- Howard Brooks
- Cardinal
- Reginald Barlow
- Jean Paul
- Lane Chandler
- Captain of Fouquet's Guards
- Wyndham Standing
- Doctor
- Dorothy Vaughan
- Midwife
- Sheila Darcy
- Maria Theresa's Maid
- Robert Milasch
- Torturer
- D'Arcy Corrigan
- Tortured Prisoner
- Harry Woods
- First Officer
- Peter Cushing
- Second Officer
- Emmett King
- King's Chamberlain
- The Robert Mitchell Boy Choir
- Choir
- Ted Billings
- Prisoner in Bastille
- Fred Cavens
- Francois
- Jimmy Dime
- A Torturer and Mask Forger
- Dwight Frye
- Fouquet's Valet
- Herman Hack
- Guard
- Leyland Hodgson
- Court Announcer
- Ian Maclaren
- Valet de Chambre
- John Merton
- Soldier
- Edgar Norton
- Fouquet's Servant
- William H. O'Brien
- Servant
- Artie Ortego
- Carriage Guard
