| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfred L. Werker | Crew | Directing | Director |
 Arthur Conan Doyle | Crew | Writing | Characters |
 Darryl F. Zanuck | Crew | Production | Producer |
 Edwin Blum | Crew | Writing | Screenplay |
 Gene Markey | Crew | Production | Associate Producer |
Gwen Wakeling | Crew | Costume & Make-Up | Costume Design |
Hans Peters | Crew | Art | Art Direction |
 Leon Shamroy | Crew | Camera | Director of Photography |
Richard Day | Crew | Art | Art Direction |
Robert Bischoff | Crew | Editing | Editor |
Thomas Little | Crew | Art | Set Decoration |
 William Gillette | Crew | Writing | Theatre Play |
William Absalom Drake | Crew | Writing | Screenplay |
 Alan Marshal | Cast | Actor | Jerrold Hunter |
Anthony Kemble-Cooper | Cast | Actor | Tony Conyngham |
 Arthur Hohl | Cast | Actor | Henchman Bassick |
 Basil Rathbone | Cast | Actor | Sherlock Holmes |
 Boyd Irwin | Cast | Actor | Bobby (uncredited) |
 Charles Irwin | Cast | Actor | Marine Sergeant (uncredited) |
 Denis Greene | Cast | Denis Green (uncredited) | |
 E. E. Clive | Cast | Actor | Inspector Bristol |
Eric Wilton | Cast | Actor | Conyngham Butler (uncredited) |
 Frank Baker | Cast | Actor | Tompkins (uncredited) |
Frank Benson | Cast | Cockney (uncredited) | |
Frank Dawson | Cast | Dawes, Moriarty's servant | |
 George Regas | Cast | Actor | Henchman Mateo |
 George Zucco | Cast | Actor | Professor Moriarty |
Gordon Hart | Cast | Actor | Guard (uncredited) |
 Harry Cording | Cast | Actor | Second Fake Constable (uncredited) |
 Henry Stephenson | Cast | Actor | Sir Ronald Ramsgate |
 Holmes Herbert | Cast | Actor | Justice of the Court |
 Ida Lupino | Cast | Actress | Ann Brandon |
 Ivan F. Simpson | Cast | Actor | Gates - Trial Prosecutor (uncredited) |
Ivo Henderson | Cast | Actor | Bobby (uncredited) |
Keith Hitchcock | Cast | Actor | Constable (uncredited) |
 Leonard Mudie | Cast | Actor | Barrows - Moriarty's Attorney (uncredited) |
 Leyland Hodgson | Cast | Actor | Bobby (uncredited) |
 Mary Forbes | Cast | Actress | Lady Conyngham |
 Mary Gordon | Cast | Actress | Mrs. Hudson |
 May Beatty | Cast | Actress | Mrs. Jameson, Brandon Housekeeper |
Neil Fitzgerald | Cast | Actor | Clerk of the Court (uncredited) |
 Nigel Bruce | Cast | Actor | Dr. Watson |
 Peter Willes | Cast | Actor | Lloyd Brandon |
Robert Cory | Cast | Tower Sentry (uncredited) | |
Robert Nobel | Cast | Foreman of the Jury (uncredited) | |
Robert R. Stephenson | Cast | Actor | Cabby (uncredited) |
Ted Billings | Cast | Actor | Pub Customer (uncredited) |
 Terry Kilburn | Cast | Actor | Billy |
 William Austin | Cast | Actor | Inquisitive Stranger |
| Person | Type | Job | Role(s) |
