An Italian gentleman and a doctor's wife plot to break up their spouses' tryst in Paris.
| Actor | Role |
|---|---|
 Julie AndrewsMrs. Pamela Piquet | Mrs. Pamela Piquet |
 Marcello MastroianniMr. Cesareo Grimaldi | Mr. Cesareo Grimaldi |
 Jonathan CecilNot listed | Not listed |
 Ian FitzgibbonBobby Piquet | Bobby Piquet |
 Jean-Pierre CastaldiMarcel | Marcel |
| JJean-Jacques DulonDr. Noiret | Dr. Noiret |
 Maria MachadoMiss Knudson | Miss Knudson |
 Denise GreyMadame Legris | Madame Legris |
| JJean-Michel CannoneDr. Picquet | Dr. Picquet |
| CCatherine JarretMarguerite | Marguerite |
 Françoise MichaudMadeline | Madeline |
 Hervé HiolleHospital Doctor | Hospital Doctor |
 Yvette Petit1st Concierge | 1st Concierge |
| MMichèle Amiel2nd Concierge | 2nd Concierge |
| RRonald MillsMaitre | Maitre |