Jean-Louis Trintignant (Marcello Clerici), Stefania Sandrelli (Giulia), Gastone Moschin (Manganiello), Dominique Sanda (Anna Quadri), Enzo Tarascio (Professor Quadri), Fosco Giachetti (The Colonel), José Quaglio (Italo Montanari) more..., Yvonne Sanson (Giulia's Mother), Milly (Marcello's Mother), Antonio Maestri (Confessor), Alessandro Haber (Drunk Blind Man), Luciano Rossi (Blind Blond), Massimo Sarchielli (Blind Man), Pierangelo Civera (Franz), Giuseppe Addobbati (Marcello's Father), Christian Aligny (Raoul), Carlo Gaddi (Hired Killer), Umberto Silvestri (Hired Killer), Furio Pellerani (Hired Killer), Luigi Antonio Guerra (), Orso Maria Guerrini (), Pasquale Fortunato (Young Marcello), Pierre Clémenti (Pasqualino 'Lino' Semirama), Sergio Graziani (Marcello Clerici (voice)), Rita Savagnone (Anna (voice)), Arturo Dominici (The Colonel (voice)), Giuseppe Rinaldi (Italo (voice)), Lydia Simoneschi (Giulia's Mother (voice)), Gianni Amico (Pupil Prof. Quadri (uncredited)), Joel Barcellos (Pupil Prof. Quadri (uncredited)), Christian Belaygue (Gipsy (uncredited)), Benedetto Benedetti (Minister (uncredited)), Claudio Cappeli (Hired Killer (uncredited)), Romano Costa (Man Opening the Door (uncredited)), Marilyn Goldin (Flower Seller (uncredited)), Marta Lado (Marcello's Daughter (uncredited)), Giorgio Pelloni (Pupil Prof. Quadri (uncredited)), Filippo Perego (Man in Elevator (uncredited)), Gino Vagniluca (Secretary (uncredited))

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) more..., Rosa Luciani (Hairstylist), Franco Corridoni (Makeup Artist), Mario Dallimonti (Sound), Enrico Umetelli (Camera Operator), Flavia Sante Vanin (Script Supervisor), Bernardo Bertolucci (Screenplay), Angelo Novi (Still Photographer), Aldo Lado (First Assistant Director), Maurizio Lodi-Fè (Producer), Maurizio Lodi-Fè (Presenter), Alain Bonnot (Assistant Director), Osvaldo Desideri (Assistant Set Decoration), Mario Cotone (Unit Manager), Carlo Broglio (Assistant Editor), Attilio Viti (Production Secretary), Nicola Venditti (Unit Manager), Franco Bassi (Sound Mixer), Piero Cicoletti (Assistant Costume Designer), Vincenzo Di Santo (Assistant Editor), Giuseppe Alberti (Assistant Camera), Pietro Sassaroli (Administration), Giancarlo Venarucci (First Assistant Editor), Guido Giorgucci (Sound), Paolo Finocchi (Assistant Director), Loredana Pagliaro (Production Secretary), Ferdinando Scarfiotti (Art Direction), Georges Delerue (Conductor), Philippe Turlure (Assistant Set Decoration), Maria Paola Maino (Set Decoration), Aldo U. Passalacqua (Production Supervisor), Sergio Basili (Foley Artist), Nedo Azzini (Assistant Art Director), Alberico Novelli (Electrician) and others.