Fredric March
Dr. Henry Jekyll / Mr. Edward Hyde
Miriam Hopkins
Ivy Pearson
Holmes Herbert
Dr. John Lanyon
Halliwell Hobbes
Brig. Gen. Sir Danvers Carew
Leonard Carey
Briggs, Lanyon's Butler (uncredited)
Sam Harris
Party Guest (uncredited)
Boyd Irwin
Police Inspector (uncredited)
Arnold Lucy
Utterson (uncredited)
Murdock MacQuarrie
Dissenting Doctor at Lecture (uncredited)
Eric Mayne
Lanyon's Associate at Lecture (uncredited)
Robert Adair
Ivy's Admirer at Music Hall (uncredited)
Pat Harmon
Music Hall Customer (uncredited)
John Rogers
Music Hall Waiter (uncredited)
G.L. McDonnell
Hobson, Carew's Butler (uncredited)
Douglas Walton
Blonde Student (uncredited)
Bobby Hale
Pub Patron (uncredited)
Tom London
Undetermined Role (uncredited)