Boris Karloff

~ as ~

Dr. Fu Manchu

Lewis Stone

~ as ~

Nyland Smith

Karen Morley

~ as ~

Sheila Barton

Charles Starrett

~ as ~

Terence Granville

Myrna Loy

~ as ~

Fah Lo See

Jean Hersholt

~ as ~

Von Berg

Lawrence Grant

~ as ~

Sir Lionel Barton

David Torrence

~ as ~

McLeod

C. Montague Shaw

~ as ~

Curator Dr. Fairgyle - British Museum Official (uncredited)

Steve Clemente

~ as ~

Knife Thrower (uncredited)