Un monsieur de compagnie

Jean-Pierre Cassel

Antoine Mirliflor

Irina Demick

Nicole

Catherine Deneuve

Isabelle

Annie Girardot

Clara

Jean-Pierre Marielle

Balthazar

Sandra Milo

Maria

Marcel Dalio

Socratès

Jean-Claude Brialy

The Prince

Paolo Stoppa

Professor Gaetano

Adolfo Celi

Benvenuto

Valérie Lagrange

Louisette

André Luguet

Antoine's grandfather

Irène Chabrier

Ernestine

Renée Passeur

The boss

Rosy Varte

Isabelle's Mother

Sacha Briquet

Authorized signatory

Jacques Dynam

Isabelle's Father

Christian Lude

Notary

Robert Blome

Prince's servant (uncredited)

Memmo Carotenuto

Policeman in Rome (uncredited)

Philippe Castelli

Man who deceives Balthazar (uncredited)

Marcel Charvey

Cheated husband (uncredited)

Louise Chevalier

Concierge (uncredited)

Hubert Deschamps

Vicar (uncredited)

Rosemary Dexter

Student (uncredited)

Mino Doro

Professor Gaetano (uncredited)

Giustino Durano

Baker (uncredited)

Geneviève Fontanel

Socratès' friend (uncredited)

Jacqueline Jefford

American woman of the Sacré-Coeur (uncredited)

Albert Michel

Monsieur Leroux (uncredited)

Bernard Musson

Concierge (uncredited)

Jacques Préboist

Station employee (uncredited)

Gamil Ratib

Maharajah (uncredited)

Régine

Régine (uncredited)

Gilbert Servien

(uncredited)

Darius Socratos

(uncredited)

Jean Mermet

(uncredited)

Charles Bayard

(uncredited)

Sylvain

Antique dealer (uncredited)