 Jean-Pierre CasselAntoine Mirliflor | Antoine Mirliflor |
 Irina DemickNicole | Nicole |
 Catherine DeneuveIsabelle | Isabelle |
 Annie GirardotClara | Clara |
 Jean-Pierre MarielleBalthazar | Balthazar |
 Sandra MiloMaria | Maria |
 Marcel DalioSocratès | Socratès |
 Jean-Claude BrialyThe Prince | The Prince |
 Paolo StoppaProfessor Gaetano | Professor Gaetano |
 Adolfo CeliBenvenuto | Benvenuto |
 Valérie LagrangeLouisette | Louisette |
 André LuguetAntoine's grandfather | Antoine's grandfather |
| IIrène ChabrierErnestine | Ernestine |
 Renée PasseurThe boss | The boss |
 Rosy VarteIsabelle's Mother | Isabelle's Mother |
 Sacha BriquetAuthorized signatory | Authorized signatory |
 Jacques DynamIsabelle's Father | Isabelle's Father |
 Christian LudeNotary | Notary |
 Robert BlomePrince's servant (uncredited) | Prince's servant (uncredited) |
 Memmo CarotenutoPoliceman in Rome (uncredited) | Policeman in Rome (uncredited) |
 Philippe CastelliMan who deceives Balthazar (uncredited) | Man who deceives Balthazar (uncredited) |
 Marcel CharveyCheated husband (uncredited) | Cheated husband (uncredited) |
 Louise ChevalierConcierge (uncredited) | Concierge (uncredited) |
 Hubert DeschampsVicar (uncredited) | Vicar (uncredited) |
 Rosemary DexterStudent (uncredited) | Student (uncredited) |
 Mino DoroProfessor Gaetano (uncredited) | Professor Gaetano (uncredited) |
 Giustino DuranoBaker (uncredited) | Baker (uncredited) |
 Geneviève FontanelSocratès' friend (uncredited) | Socratès' friend (uncredited) |
 Jacqueline JeffordAmerican woman of the Sacré-Coeur (uncredited) | American woman of the Sacré-Coeur (uncredited) |
 Albert MichelMonsieur Leroux (uncredited) | Monsieur Leroux (uncredited) |
