Boris Karloff
Hjalmar Poelzig
Bela Lugosi
Dr. Vitus Werdegast
David Manners
Peter Alison
Julie Bishop
Joan Alison
Egon Brecher
The Majordomo
Harry Cording
Thamal
Lucille Lund
Karen
Henry Armetta
The Sergeant
Albert Conti
The Lieutenant
John Carradine
Cult Organist
John George
Cultist (uncredited)
Albert Pollet
Waiter (uncredited)