Bourvil as Léon Dutilleul

Joan Greenwood as Susan

Gérard Oury as Maurice

Henri Crémieux as Mr. Lécuyer

Roger Tréville as Félix Burdin

Jacques Erwin as Gaston

Frédéric O'Brady as The Medical Specialist

René Worms as An Employee at the Ministry

Nina Myral as Mrs. Eloise

André Dalibert as

Nicole Riche as The Lady of the Second

Germaine Reuver as Mrs. Ménard, the Concierge

Jeanne Véniat as The South American

Georges Flateau as Mr Robert

Edmond Beauchamp as Arturo

Georges Lannes as The Director of the 'Prison de la Santé'

Marcelle Arnold as Germaine

Raymond Souplex as Jean-Paul

Nicolas Amato as The First Agent (uncredited)

Georgette Anys as Maria (uncredited)

Alfred Arlais as (uncredited)

Maurice Biraud as A colleague of Léon (uncredited)

Gérard Buhr as (uncredited)

Marcel Charvey as The bartender (uncredited)

Dominique Davray as A model (uncredited)

Skip Farrell as Maurice (uncredited)

Charlie Fawcett as (uncredited)

Fignolita as The negress (uncredited)

Charles Jarrel as (uncredited)

Franck Maurice as The Second Agent (uncredited)

Marcel Meral as A Colleague of Léon (uncredited)

Craddock C. Monroe as Elmer (uncredited)

Alain Raffael as (uncredited)

Nicole Rimbaud as (uncredited)

Titys as The Prisoner (uncredited)

Pamela Wilde as A Model (uncredited)

Payne Williams as Jean-Paul (uncredited)