
| Peter Lorre | ... | Doctor Gogol |
 | Frances Drake | ... | Yvonne Orlac |
 | Colin Clive | ... | Stephen Orlac |
 | Ted Healy | ... | Reagan, the American Reporter |
 | Sara Haden | ... | Marie, Yvonne's Maid |
 | Edward Brophy | ... | Rollo the Knife Thrower |
 | Henry Kolker | ... | Prefect Rosset |
 | Keye Luke | ... | Dr. Wong, Gogol's Assistant |
 | May Beatty | ... | Françoise, Gogol's Housekeeper |
| rest of cast listed alphabetically: |
 | George Davis | ... | Chauffeur (scenes deleted) |
 | Billy Dooley | ... | Undetermined Role (scenes deleted) |
 | Harold Huber | ... | Thief (scenes deleted) |
 | Isabel Jewell | ... | Marianne (scenes deleted) |
 | Leo White | ... | Undetermined Role (scenes deleted) |
 | Sam Ash | ... | Detective Arresting Stephen (uncredited) |
 | Hooper Atchley | ... | Train Conductor (uncredited) |
 | Agostino Borgato | ... | Stage Doorman (uncredited) |
 | Maurice Brierre | ... | Taxi Driver (uncredited) |
 | Mike Cantwell | ... | Man (uncredited) |
 | Julie Carter | ... | Nurse (uncredited) |
 | Harvey Clark | ... | Station Master (uncredited) |
 | Cora Sue Collins | ... | Gogol's Lame Child Patient (uncredited) |
 | Nell Craig | ... | Suzanne, Nurse (uncredited) |
 | Frank Darien | ... | Lavin, Man Carting Statues (uncredited) |
 | Kay English | ... | Woman (uncredited) |
 | Alphonse Ethier | ... | Assistant Prefect (uncredited) |
 | Christian J. Frank | ... | Detective Escorting Rollo on Train (uncredited) |
 | Billy Gilbert | ... | Man on Train with Dog (uncredited) |
 | Robert Graves | ... | Detective Escorting Rollo on Train (uncredited) |
 | Roger Gray | ... | Detective Arresting Stephen (uncredited) |
 | Ramsay Hill | ... | Actor as 'Duke' (uncredited) |
 | Otto Hoffman | ... | Blind Man (uncredited) |
 | Robert Emmett Keane | ... | Raoul, the Drunk (uncredited) |
 | Murray Kinnell | ... | Charles, Theater Official (uncredited) |
 | Edward Lippy | ... | Henry Orlac's Clerk (uncredited) |
 | Rollo Lloyd | ... | Varsac, Fingerprint Expert (uncredited) |
 | Marc Loebell | ... | Actor as 'Prince' (uncredited) |
 | Theodore Lorch | ... | Actor at Party (uncredited) |
 | Michael Mark | ... | Execution Official (uncredited) |
 | Mary Jo Mathews | ... | Woman outside Theater of Horrors (uncredited) |
 | Edward Norris | ... | Man outside Theater of Horrors (uncredited) |
 | Sarah Padden | ... | Mother of Lame Girl (uncredited) |
 | Earl Pingree | ... | Detective Interviewing Henry's Clerk (uncredited) |
 | Russ Powell | ... | Gendarme (uncredited) |
 | Matty Roubert | ... | Newsboy (uncredited) |
 | Rolfe Sedan | ... | Traffic Gendarme (uncredited) |
 | Bernard Siegel | ... | Man (uncredited) |
 | Carl Stockdale | ... | Actor as 'The Notary' (uncredited) |
 | Charles Trowbridge | ... | Dr. Marbeau (uncredited) |
 | Jacques Vanaire | ... | Police Broadcaster (uncredited) |
 | Monte Vandergrift | ... | Audience Member (uncredited) |
 | Clarence Wilson | ... | Piano Creditor (uncredited) |
 | Ian Wolfe | ... | Henry Orlac, Stephen's Stepfather (uncredited) |