Boris Karloff
Dr. Fu Manchu
Lewis Stone
Nyland Smith
Karen Morley
Sheila Barton
Charles Starrett
Terence Granville
Myrna Loy
Fah Lo See
Jean Hersholt
Von Berg
Lawrence Grant
Sir Lionel Barton
David Torrence
McLeod
C. Montague Shaw
Curator Dr. Fairgyle - British Museum Official (uncredited)
Steve Clemente
Knife Thrower (uncredited)