Joseph Cotten
Baron Frankenstein

Rosalba Neri
Tania Frankenstein

Paul Müller
Dr. Charles Marshall

Herbert Fux
Tom Lynch

Renate Kasché
Julia Black

Mickey Hargitay
Captain Harris

Lorenzo Terzon
Harris' assistant

Andrea Aureli
Jim Turner

Ada Pometti
Sara Willis

Joshua Sinclair
John

Richard Beardley
Simon Burke

Petar Martinovitch
Jack Morgan

Herb Andress
Hunchback

Marino Masé
Thomas Stack (as Peter Whiteman)

Adam Welles
Child

Riccardo Pizzuti
The Creature