- Christopher Plummer
- Eddie Chapman
- Romy Schneider
- Helga Lindström aka The Countess
- Trevor Howard
- Freddie Young aka Distinguished Civilian
- Gert Fröbe
- Colonel Steinhager
- Claudine Auger
- Paulette
- Yul Brynner
- Baron Von Grunen
- Harry Meyen
- Lieutenant Keller
- Georges Lycan
- Leo
- Jess Hahn
- Commander Braid
- John Abbey
- Lang
- Gil Barber
- Bergman
- Jean-Claude Bercq
- Major Von Leeb
- Paul Bonifas
- Charlie
- Jean-Roger Caussimon
- Luftwaffe General
- Annette Claudier
- Prison Clerk
- Jean Claudio
- Sergeant Thomas
- Pierre Collet
- German Warder
- Anthony Dawson
- Major Stillman
- Georges Douking
- Polish Interrogator
- Colin Drake
- English Farmer
- Robert Favart
- General Dalrymple
- Fred Fisher
- German Admiral
- Bernard Fresson
- French Resistant Raymond
- Gisèle Grimm
- Major Lawrence
- Harvey Hall
- Detainee Center Sergeant
- Clément Harari
- Losch
- Jacques Harden
- Canadian Prisoner
- David Hutcheson
- Ministry Official
- Marcel Journet
- Marshall von Runstedt
- Morteza Kazerouni
- Freddie, the Chauffeur
- Richard Larke
- Jersey Prison Warder
- Robert Le Béal
- Lieutenant Cameron
- Violette Marceau
- Prisoner Girl
- Guy Marly
- Luftwaffe Officer
- Jacques Mayar
- S.S. Lieutenant
- Paul Mesnier
- Wehrmacht General
- Charles Millot
- 2nd Polish Interrogator
- Hubert Noël
- Von Runstedt's Aide de Camp
- Jean Ozenne
- Gal Von Langsdorf
- Marcel Roche
- Jersey Prison Head Warder
- Albert Simono
- B.B.C. Reporter
- Anthony Stuart
- Wing Commander
- Michel Thomass
- 3rd Polish Interrogator
- Edward Underdown
- Air Marshall
- François Valorbe
- S.S. Commandant
- Van Doude
- Plotting Officer
- Howard Vernon
- German Embassy Official
- Francis De Wolff
- German Colonel General
- Jean-Pierre Zola
- Jersey Prison Commandant
- Jean-Marc Bory
- Resistance Leader
- Daniel Crohem
- (uncredited)
- Gordon Jackson
- British Sergeant Questioning Chapman
- Olivier L'Espagnol
- German Feldwebel
- Colin McKenzie
- Policeman
- Jean Minisini
- (uncredited)
- Laure Paillette
- Old Lady
- Frank Phillips
- Radio Announcer
- Robert Rietty
- B.B.C. Reporter
- Jean Rupert
- (uncredited)
- Jeff Silk
- Policeman
- Sylvia Sorrente
- Hostess in the Club
- Jean Vaudier
- (uncredited)
