Charles Laughton character Dr. Moreau
Richard Arlen character Edward Parker
Leila Hyams character Ruth Thomas
Bela Lugosi character Sayer
Kathleen Burke character Panther Woman
Arthur Hohl character Montgomery
Stanley Fields character Capt. Davies
Paul Hurst character Capt. Donahue
Hans Steinke character Ouran
Tetsu Komai character M`ling
George Irving character Consul
Jack Bardette character Undetermined Role (uncredited)
Evangelus Berbas character Undetermined Role (uncredited)
Joe Bonomo character Beast (uncredited)
Buster Brodie character Pig Man - a Little Beast (uncredited)
Jacob Dance character Beast (uncredited)
James Dime character Seaman (uncredited)
Harry Ekezian character Gola (uncredited)
Charles Gemora character Gorilla on Pier (uncredited)
John George character Beast (uncredited)
Rosemary Grimes character Samoan Girl (uncredited)
Robert P. Kerr character Undetermined Role (uncredited)
Bob Kortman character Mr. Hogan (uncredited)
Alan Ladd character Beast (uncredited) (unconfirmed)
Robert Milasch character Beast (uncredited)
Constantine Romanoff character Beast (uncredited)
Schlitzie character Furry Manimal (uncredited)
Jack Walters character Undetermined Role (uncredited)
Duke York character Beast (uncredited)
