 | Marcello Mastroianni als Commissioner Salvatore Santamaria |
 | Jacqueline Bisset als Anna Carla Dosio |
 | Jean-Louis Trintignant als Massimo Campi |
 | Aldo Reggiani als Lello Riviera |
 | Maria Teresa Albani als Virginia Tabusso |
 | Omero Antonutti als Benito |
 | Gigi Ballista als Vollero |
 | Fortunato Cecilia als Nicosia |
 | Claudio Gora als Garrone |
| Franco Nebbia als Bonetto |
| Lina Volonghi als Ines Tabusso |
 | Pino Caruso als Police Commissioner De Palma |
| Mario Ferrero als Vittorio Dosio |
 | Giuseppe Anatrelli als Chief of Police |
 | Antonio Orlando als Barber |
| Ginette Marcelle Bron |
| Jean-Claude Clément |
| Antonino Faà di Bruno als Paolo Campi |
 | Massimo Giuliani als Young Man in Trattoria |
 | Mauro Vestri als Ragionier Giancarlo Cerioni |
 | Ennio Antonelli als Zavattaro |
 | Dante Fioretti als Geometra Bauchiero |
 | Tina Lattanzi als Massimo's Mother |
 | Clara Bindi als Benito's Wife |
| Eleonora Spinelli |
 | Nancy Lecchini als Colleague of Cerioni |
| Aurelio Bertola |
| Gil Cagnè als Coiffeur (uncredited) |
| Guglielmo Molasso als Pepper Mill Seller (uncredited) |
| Luigi Comencini | Director |
| Ennio Morricone | Original Music Composer |
| Agenore Incrocci | Screenplay |
| Carlo Fruttero | Novel |
| Franco Lucentini | Novel |
| Furio Scarpelli | Screenplay |
| Marcello D'Amico | Producer |
| Roberto Infascelli | Producer |
| Antonio Siciliano | Editor |
| Luciano Tovoli | Director of Photography |
| Mario Ambrosino | Production Design |
| Claudio Cinini | Set Decoration |
| Mario Ambrosino | Costume Design |
| Vito Lattuada | Shoe Design |
| Paolo Infascelli | Production Manager |
| Egidio Valentini | Unit Production Manager |
| Vincenzo D'Errico | Assistant Director |
| Elio Girlanda | Assistant Director |
| Luigi Patrizi | Second Assistant Director |
| Amy Werba | Assistant Director |
| Ditta D'Angelo | Other |
| Filippo Moroni | Other |
| Massimo Anzellotti | Sound Effects Editor |
| Antonio Catalano | Other |
| Romano Checcacci | Sound Mixer |
| Giorgio Pallotta | Sound |
| Romano Albani | Camera Operator |
| Ettore Duranti | Grip |
| Michele Picciaredda | Assistant Camera |
| Sergio Strizzi | Still Photographer |
| Giuliano Corso | Assistant Editor |
| Grazia Baldanello | Script Supervisor |
| Paolo Bistolfi | Production Secretary |
| Roberto Infascelli | Presenter |
