Tony Maréchal is a professional seducer. Having conquered countless women, proclaims that there is none that can resist his charm. To prove this makes a difficult challenge: to seduce baroness Minna von Strasshofer.
| Actor | Role |
|---|---|
 Jean-Paul BelmondoTony Maréchal | Tony Maréchal |
 Philippe NoiretBibi Dumonceaux | Bibi Dumonceaux |
 Robert MorleyLord Swift | Lord Swift |
 Geneviève PageBéatrice Dumonceaux | Béatrice Dumonceaux |
 Nadja TillerBaroness Minna von Strasshofer | Baroness Minna von Strasshofer |
 Jean-Pierre MarielleBob | Bob |
 Mylène DemongeotMuriel | Muriel |
 Stefania SandrelliVéronique | Véronique |
 Maria PacômeGermaine | Germaine |
 Ellen BahlJosette | Josette |
 Peter CarstenKapitän Otto Hanz | Kapitän Otto Hanz |
 Michèle GirardonL'étrangère du Ritz | L'étrangère du Ritz |
 Marcel DalioLe père de Véronique | Le père de Véronique |
 Micheline DaxMarjorie | Marjorie |
 Pierre TornadeLe client du garage | Le client du garage |
 Raymond MeunierLe chauffeur de taxi | Le chauffeur de taxi |
 Paul MerceyM. Ponce | M. Ponce |