Cary Grant
John Robie
Grace Kelly
Frances Stevens
Jessie Royce Landis
Jessie Stevens
John Williams
H. H. Hughson
Charles Vanel
Bertani
Brigitte Auber
Danielle Foussard
Jean Martinelli
Foussard
Georgette Anys
Germaine
René Blancard
Commissaire Lepic (uncredited)
William 'Wee Willie' Davis
Big Man in Kitchen (uncredited)
Bess Flowers
Masquerade Party Guest (uncredited)
Bernard Sell
Casino Patron (uncredited)
Charles Sherlock
Detective (uncredited)
Philip Van Zandt
Jewelry Clerk (uncredited)
Alfred Hitchcock
Man Sitting Next to John Robie on Bus (uncredited)
Roland Lesaffre
Bertani Employee (uncredited)
George Boyce
Party Guest (uncredited)
John Alderson
Detective at the Costume Ball (uncredited)
Alberto Morin
Detective (uncredited)
Manuel París
Croupier (uncredited)
Gladys Holland
Elegant French Woman / Additional Voices (uncredited)
Fred Kelsey
Party Guest (uncredited)
Barry Norton
Frenchman (uncredited)
Louis Mercier
Croupier (uncredited)