Richard Greene
Sir Henry Baskerville
Basil Rathbone
Sherlock Holmes
Wendy Barrie
Beryl Stapleton
Nigel Bruce
Doctor John H. Watson
Lionel Atwill
Dr. James Mortimer
Beryl Mercer
Mrs. Jennifer Mortimer
Morton Lowry
John 'Jack' Stapleton
Ralph Forbes
Sir Hugo Baskerville
E. E. Clive
London Cabbie John Clayton
Nigel De Brulier
The Notting Hill Murderer
Ian Maclaren
Sir Charles Baskerville
Mary Young
Betsy Ann's Mother (uncredited)
Kenneth Hunter
Ship's Officer (uncredited)
Vesey O'Davoren
Ship's Steward (uncredited)
John Graham Spacey
Ship's Porter (uncredited)
David Thursby
Open Carriage Driver (uncredited)
Leonard Carey
Hugo's Servant (uncredited)
Rita Page
Chambermaid (uncredited)
Frank McLure
Ship Passenger (uncredited)
Brandon Beach
Ship Passenger (uncredited)
Blitzen
The Hound (as Chief)
James Carlisle
Ship Passenger (uncredited)
Herschel Graham
Ship Passenger (uncredited)
