Peter Lorre as Doctor Gogol

Frances Drake as Yvonne Orlac

Colin Clive as Stephen Orlac

Ted Healy as Reagan

Isabel Jewell as Marianne (scenes deleted)

Sara Haden as Marie

Edward Brophy as Rollo

Henry Kolker as Prefect Rosset

Keye Luke as Dr. Wong

May Beatty as Françoise

Ian Wolfe as Henry Orlac, Stephen Orlac's Stepfather (Uncredited)

Edward Lippy as Pierre, Henry Orlac's Clerk (Uncredited)

Frank Darien as Lavin, Waxwork Proprietor (Uncredited)

Murray Kinnell as Charles, Theatre Official (Uncredited)

Rollo Lloyd as Varsac, Fingerprint Expert (Uncredited)

Charles Trowbridge as Dr. Marbeau (Uncredited)

Nell Craig as Suzanne (Uncredited)

Robert Emmett Keane as Raoul (Uncredited)

Agostino Borgato as Stage Doorman (Uncredited)

Billy Gilbert as Autograph Seeker on Train (Uncredited)

Hooper Atchley as Train Conductor (Uncredited)

Maurice Brierre as Taxi Driver (Uncredited)

Julie Carter as Nurse (Uncredited)

Harvey Clark as Station Master (Uncredited)

Michael Mark as Execution Official (Uncredited)

Alphonse Ethier as Assistant Prefect (Uncredited)

Matty Roubert as Newsboy (Uncredited)

Otto Hoffman as Blind Man (Uncredited)

Cora Sue Collins as Crippled Girl (Uncredited)

Sarah Padden as Crippled Girl's Mother (Uncredited)

Mike Cantwell as Man (Uncredited)

Bernard Siegel as Man (Uncredited)

Kay English as Woman (Uncredited)

Edward Norris as Man Outside Theatre of Horror (Uncredited)

Mary Jo Mathews as Woman Outside Theatre of Horror (Uncredited)

Russ Powell as Gendarme (Uncredited)

Rolfe Sedan as Gendarme (Uncredited)

Sam Ash as Detective Arresting Stephen (Uncredited)

Roger Gray as Detective Arresting Stephen (Uncredited)

Christian J. Frank as Detective Escorting Rollo on Train (Uncredited)

Robert Graves as Detective Escorting Rollo on Train (Uncredited)

Earl Pingree as Detective Interviewing Henry Orlac's Clerk (Uncredited)

Theodore Lorch as Actor at Party (Uncredited)

Carl Stockdale as Actor as 'The Rotary' (Uncredited)

Ramsay Hill as Actor as 'Duke' (Uncredited)

Marc Loebell as Actor as 'Prince' (Uncredited)

Jacques Vanaire as Police Broadcaster (Uncredited)

Monte Vandergrift as Audience Member (Uncredited)

Clarence Wilson as Piano Creditor (Uncredited)