- Clive Brook
- Karl
- Diana Wynyard
- Irena
- Raymond Huntley
- Rabenau
- Derek Farr
- Hans
- Joyce Howard
- Elly
- Howard Marion-Crawford
- Kummer
- John Penrose
- Otto
- Morland Graham
- Father Landbach
- Ronald Squire
- Spiedler
- Reginald Beckwith
- Fenner
- Clifford Evans
- Dressler
- Bernard Miles
- Muller
- Gibb McLaughlin
- Dr. Weiner
- Muriel George
- Hanna
- Martita Hunt
- Concierge
- Hay Petrie
- Sebastian
- Manning Whiley
- S.S. Trooper
- Katie Johnson
- Granny Schmidt
- George Hayes
- Policeman
- Everley Gregg
- Maria
- Marie Ault
- Woman Customer
- Abraham Sofaer
- Heini
- Joan Hickson
- Katie
- Pat McGrath
- Kurt
- Wyndham Milligan
- S.S. Guard
- Bunty Payne
- Erna
- Adolf Hitler
- Self
- Ken Annakin
- Radio Announcer
- Ernest Butcher
- Chestnut Seller
- William Hartnell
- Radio Location Aerial Operator
- Mike Johnson
- Fritz - Fenner's Dresser
- Howard Lang
- Radio Operator
- Ben Williams
- Nagel - Radio Location Expert
- Victor Wood
- Undetermined Role
