Basil Rathbone
Baron Wolf von Frankenstein
Boris Karloff
The Monster
Bela Lugosi
Ygor
Lionel Atwill
Inspector Krogh
Josephine Hutchinson
Elsa von Frankenstein
Donnie Dunagan
Peter von Frankenstein
Emma Dunn
Amelia
Edgar Norton
Thomas Benson
Perry Ivins
Fritz
Lawrence Grant
Bürgermeister
Lionel Belmore
Emil Lang
Michael Mark
Ewald Neumüller
Caroline Frances Cooke
Frau Neumüller
Gustav von Seyffertitz
Burgher
Lorimer Johnston
Burgher
Tom Ricketts
Burgher
Ward Bond
Gendarme at Gate (uncredited)
Betty Chay
Undetermined Role (uncredited)
Harry Cording
Bearded Gendarme (uncredited)
Jack Curtis
Actor (uncredited)
Fred Farrell
Villager (uncredited)
Jack Harris
Extra (uncredited)
Russ Powell
Webber - Burgher (uncredited)
Clarence Wilson
Dr. Berger (uncredited)