 Cary GrantJohn Robie | John Robie |
 Grace KellyFrances Stevens | Frances Stevens |
 Jessie Royce LandisJessie Stevens | Jessie Stevens |
 John WilliamsH. H. Hughson | H. H. Hughson |
 Charles VanelBertani | Bertani |
 Brigitte AuberDanielle Foussard | Danielle Foussard |
 Jean MartinelliFoussard | Foussard |
 Georgette AnysGermaine | Germaine |
 René BlancardCommissaire Lepic (uncredited) | Commissaire Lepic (uncredited) |
 William 'Wee Willie' DavisBig Man in Kitchen (uncredited) | Big Man in Kitchen (uncredited) |
 Bess FlowersMasquerade Party Guest (uncredited) | Masquerade Party Guest (uncredited) |
 Bernard SellCasino Patron (uncredited) | Casino Patron (uncredited) |
 Charles SherlockDetective (uncredited) | Detective (uncredited) |
 Philip Van ZandtJewelry Clerk (uncredited) | Jewelry Clerk (uncredited) |
 Alfred HitchcockMan Sitting Next to John Robie on Bus (uncredited) | Man Sitting Next to John Robie on Bus (uncredited) |
 Roland LesaffreBertani Employee (uncredited) | Bertani Employee (uncredited) |
| GGeorge BoyceParty Guest (uncredited) | Party Guest (uncredited) |
 John AldersonDetective at the Costume Ball (uncredited) | Detective at the Costume Ball (uncredited) |
 Alberto MorinDetective (uncredited) | Detective (uncredited) |
 Manuel ParísCroupier (uncredited) | Croupier (uncredited) |
 Gladys HollandElegant French Woman / Additional Voices (uncredited) | Elegant French Woman / Additional Voices (uncredited) |
 Fred KelseyParty Guest (uncredited) | Party Guest (uncredited) |
 Barry NortonFrenchman (uncredited) | Frenchman (uncredited) |
 Louis MercierCroupier (uncredited) | Croupier (uncredited) |
| OOliver CrossCasino Patron (uncredited) | Casino Patron (uncredited) |
