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)

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)

Oliver Cross

Casino Patron (uncredited)