 | Marcello Mastroianni als Valerio |
 | Faye Dunaway als Julia |
 | Enrico Simonetti als Party Host |
 | Karin Eugh als Griselda |
 | Esmeralda Ruspoli als Griselda |
 | Caroline Mortimer als Maggie |
 | Mirella Pamphili als Party Guest (as Mirella Panfili) |
| Yvonne Gilbert als Marie |
| Cesare Zavattini | Screenplay |
| Tonino Guerra | Screenplay |
| Manuel De Sica | Original Music Composer |
| Vittorio De Sica | Director |
| Carlo Ponti | Producer |
| Arthur Cohn | Producer |
| Ennio De Concini | Screenplay |
| Peter Baldwin | Screenplay |
| Pasqualino De Santis | Director of Photography |
| Brunello Rondi | Novel |
| Piero Poletto | Art Direction |
| Julian Zimet | Screenplay |
| Adriana Novelli | Editor |
| Enrico Sabbatini | Costume Design |
| Giuseppe Banchelli | Makeup Artist |
| Lina Cassini | Hairstylist |
| Mario Van Riel | Makeup Artist |
| Jone Tuzi | Production Supervisor |
| Shelley Bartolini | Scenic Artist |
| Luisa Alessandri | Second Assistant Director |
| Peter Baldwin | First Assistant Director |
| Renato Cadueri | Sound |
| Carlo Palmieri | Sound |
| Roberto Forges Davanzati | Assistant Camera |
| Douglas Kirkland | Still Photographer |
| Theadora Van Runkle | Costume Designer |
| Zeno Vukelich | Music Director |
| Elvira D'Amico | Script Supervisor |
| Margaret Roy Anderson | Dialogue Coach |
