Un monsieur de compagnie: Reparto
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)