Jean-Louis Trintignant
Marcello Clerici
Gastone Moschin
Manganiello
Dominique Sanda
Anna Quadri
Enzo Tarascio
Professor Quadri
Fosco Giachetti
The Colonel
José Quaglio
Italo Montanari
Yvonne Sanson
Giulia's Mother
Alessandro Haber
Drunk Blind Man
Massimo Sarchielli
Blind Man
Giuseppe Addobbati
Marcello's Father
Umberto Silvestri
Hired Killer
Furio Pellerani
Hired Killer
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)