 | Marcello Mastroianni als Arthur Meursault |
 | Anna Karina als Marie Cardona |
 | Bernard Blier als Defense Counsel |
 | Alfred Adam als Prosecutor |
 | Pierre Bertin als Judge |
 | Angela Luce als Madame Masson |
 | Jacques Herlin als Director of Home |
 | Mimmo Palmara als Masson |
 | Jean-Pierre Zola als Employer |
 | Joseph Marechal als Salamano |
 | Jacques Monod als Prison Guard |
| Mohamed Cheritel als Arab |
 | Vittorio Duse als Lawyer |
 | Brahim Hadjadj als Arab |
 | Valentino Macchi |
| Saada Rahlem als Arab |
| Marc Laurent als Emmanuel |
| Paolo Herzl |
 | Bruno Cremer als Priest |
 | Georges Géret als Raymond Sintes |
 | Georges Wilson als Examining Magistrate |
 | Jean-Marc Bory als (uncredited) |
| Luchino Visconti | Director |
| Piero Tosi | Costume Design |
| Giuseppe Rotunno | Director of Photography |
| Ruggero Mastroianni | Editor |
| Luchino Visconti | Screenplay |
| Suso Cecchi d'Amico | Screenplay |
| Piero Piccioni | Original Music Composer |
| Albert Camus | Novel |
| Georges Conchon | Screenplay |
| Dino De Laurentiis | Producer |
| Pietro Notarianni | Producer |
| Bruno Nicolai | Conductor |
| Emmanuel Roblès | Script Editor |
| Cesare Rovatti | Assistant Costume Designer |
| Giuliana Serano | Assistant Costume Designer |
| Mario Lupi | Administration |
| Giuseppe Maccari | Camera Operator |
| Mario Capriotti | Camera Operator |
| Giuseppe Banchelli | Makeup Artist |
| Mario Banchelli | Assistant Makeup Artist |
| Salvatore Cotroneo | Hairstylist |
| Giuseppe Di Biase | Assistant Camera |
| Luigi Conversi | Assistant Camera |
| Otello Spila | Assistant Camera |
| Piero Servo | Assistant Camera |
| Vittorio Trentino | Sound |
| Emilio Rosa | Sound Mixer |
| Piero Tosi | Set Decoration |
| Lea Mazzocchi | Assistant Editor |
| Dino De Laurentiis | Presenter |
| Rinaldo Ricci | Assistant Director |
| Albino Cocco | Assistant Director |
| Ferdinando Giovannoni | Assistant Art Director |
| Carlo Bartolini | Production Supervisor |
| Fausto Lupi | Production Manager |
| Mario Garbuglia | Art Direction |
| Alfredo De Laurentiis | Production Coordinator |
| Marcello Mastroianni | Producer |
| Vladimiro Salvatori | Grip |
| Margherita Autuori | Publicist |
| Enrico Lucherini | Publicist |
| Matteo Spinola | Publicist |
