| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur Johnston | Crew | Sound | Music |
 Erle C. Kenton | Crew | Directing | Director, Producer |
 H.G. Wells | Crew | Writing | Novel |
Hans Dreier | Crew | Art | Art Direction |
 Karl Struss | Crew | Camera | Director of Photography |
Philip Wylie | Crew | Writing | Screenplay |
Sigmund Krumgold | Crew | Sound | Music |
 Waldemar Young | Crew | Writing | Screenplay |
 Wally Westmore | Crew | Costume & Make-Up | Makeup Artist |
 Joe Bonomo | Crew | Crew | Stunts |
 Loren L. Ryder | Crew | Sound | Sound Re-Recording Mixer |
 Arthur Hohl | Cast | Actor | Montgomery |
 Bela Lugosi | Cast | Actor | The Sayer of the Law |
 Bob Kortman | Cast | Actor | Mr. Hogan (uncredited) |
 Buster Brodie | Cast | Actor | Pig Man - a Little Beast (uncredited) |
 Charles Gemora | Cast | Actor | Gorilla on Pier (uncredited) |
 Charles Laughton | Cast | Actor | Dr. Moreau |
 Constantine Romanoff | Cast | Actor | Beast (uncredited) |
 George Irving | Cast | Actor | Consul |
Hans Steinke | Cast | Actor | Ouran |
 James Dime | Cast | Actor | Seaman (uncredited) |
 John George | Cast | Actor | Beast (uncredited) |
 Kathleen Burke | Cast | Actress | Lota the Panther Woman |
 Leila Hyams | Cast | Actress | Ruth Thomas |
 Paul Hurst | Cast | Actor | Capt. Donahue |
 Richard Arlen | Cast | Actor | Edward Parker |
 Robert Milasch | Cast | Actor | Beast (uncredited) |
Robert P. Kerr | Cast | Actor | Undetermined Role (uncredited) |
Rosemary Grimes | Cast | Actress | Samoan Girl (uncredited) |
 Schlitzie | Cast | Actor | Furry Manimal (uncredited) |
 Stanley Fields | Cast | Actor | Capt. Davies |
 Tetsu Komai | Cast | Actor | M`ling |
Joe Bonomo | Cast | Actor | Beast (uncredited) |
 Duke York | Cast | Actor | Beast (uncredited) |
Jack Walters | Cast | Actor | Undetermined Role (uncredited) |
Jacob Dance | Cast | Beast (uncredited) | |
Jack Bardette | Cast | Undetermined Role (uncredited) | |
Harry Ekezian | Cast | Actor | Gola (uncredited) |
Evangelus Berbas | Cast | Actor | Undetermined Role (uncredited) |
| Person | Type | Job | Role(s) |
