- Harry Baur
- Peter Brioukow
- Penelope Dudley-Ward
- Natasha Kovrin
- Laurence Olivier
- Capt. Ivan Ignatoff
- Athene Seyler
- Madame Anna Sabline
- Lilian Braithwaite
- Countess
- Morton Selten
- Gen. Kovrin
- Sam Livesey
- Fedor
- Robert Cochran
- Polonsky
- Hay Petrie
- Spy
- Walter Hudd
- The Doctor
- Kate Cutler
- Madame Kovrin
- C.M. Hallard
- President of Court Martial
- Charles Carson
- Officer of Defense
- Edmund Willard
- Officer of Prosecution
- Morland Graham
- Brioukow's Servant
- Clarence Bigge
- Minor role
- John Harvey
- Minor role
- Anthony Quayle
- Vanya - Soldier dictating Letter
- William Webster
- Second Servant
