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)

Edgar G. Ulmer