 | Jean-Louis Trintignant als Marcello Clerici |
 | Stefania Sandrelli als Giulia |
 | Gastone Moschin als Manganiello |
 | Dominique Sanda als Anna Quadri |
 | Enzo Tarascio als Professor Quadri |
 | Fosco Giachetti als The Colonel |
 | José Quaglio als Italo Montanari |
 | Yvonne Sanson als Giulia's Mother |
 | Milly als Marcello's Mother |
 | Antonio Maestri als Confessor |
 | Alessandro Haber als Drunk Blind Man |
 | Luciano Rossi als Blind Blond |
 | Massimo Sarchielli als Blind Man |
| Pierangelo Civera als Franz |
 | Giuseppe Addobbati als Marcello's Father |
 | Christian Aligny als Raoul |
 | Carlo Gaddi als Hired Killer |
| Umberto Silvestri als Hired Killer |
| Furio Pellerani als Hired Killer |
 | Luigi Antonio Guerra |
 | Orso Maria Guerrini |
| Pasquale Fortunato als Young Marcello |
 | Pierre Clémenti als Pasqualino 'Lino' Semirama |
 | Sergio Graziani als Marcello Clerici (voice) |
 | Rita Savagnone als Anna (voice) |
| Arturo Dominici als The Colonel (voice) |
 | Giuseppe Rinaldi als Italo (voice) |
 | Lydia Simoneschi als Giulia's Mother (voice) |
 | Gianni Amico als Pupil Prof. Quadri (uncredited) |
 | Joel Barcellos als Pupil Prof. Quadri (uncredited) |
| Christian Belaygue als Gipsy (uncredited) |
| Benedetto Benedetti als Minister (uncredited) |
| Claudio Cappeli als Hired Killer (uncredited) |
| Romano Costa als Man Opening the Door (uncredited) |
| Marilyn Goldin als Flower Seller (uncredited) |
| Marta Lado als Marcello's Daughter (uncredited) |
| Giorgio Pelloni als Pupil Prof. Quadri (uncredited) |
 | Filippo Perego als Man in Elevator (uncredited) |
| Gino Vagniluca als Secretary (uncredited) |
| Bernardo Bertolucci | Director |
| Giovanni Bertolucci | Executive Producer |
| Georges Delerue | Original Music Composer |
| Vittorio Storaro | Director of Photography |
| Franco Arcalli | Editor |
| Alberto Moravia | Novel |
| Ferdinando Scarfiotti | Production Design |
| Gitt Magrini | Costume Design |
| Rosa Luciani | Hairstylist |
| Franco Corridoni | Makeup Artist |
| Mario Dallimonti | Sound |
| Enrico Umetelli | Camera Operator |
| Flavia Sante Vanin | Script Supervisor |
| Guido Giorgucci | Sound |
| Franco Bassi | Sound Mixer |
| Paolo Finocchi | Assistant Director |
| Aldo Lado | First Assistant Director |
| Alain Bonnot | Assistant Director |
| Giuseppe Alberti | Assistant Camera |
| Nicola Venditti | Unit Manager |
| Mario Cotone | Unit Manager |
| Attilio Viti | Production Secretary |
| Loredana Pagliaro | Production Secretary |
| Pietro Sassaroli | Administration |
| Piero Cicoletti | Assistant Costume Designer |
| Osvaldo Desideri | Assistant Set Decoration |
| Carlo Broglio | Assistant Editor |
| Giancarlo Venarucci | First Assistant Editor |
| Vincenzo Di Santo | Assistant Editor |
| Maurizio Lodi-Fè | Presenter |
| Maurizio Lodi-Fè | Producer |
| Bernardo Bertolucci | Screenplay |
| Angelo Novi | Still Photographer |
| Ferdinando Scarfiotti | Art Direction |
| Henri Michaud | Co-Producer |
| Maria Paola Maino | Set Decoration |
| Giuliana Bettoja | Post Production Supervisor |
| Serge Lebeau | Production Manager |
| Aldo U. Passalacqua | Production Supervisor |
| Nedo Azzini | Assistant Art Director |
| Philippe Turlure | Assistant Set Decoration |
| Sergio Basili | Foley Artist |
| Alberico Novelli | Electrician |
| Georges Delerue | Conductor |
