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
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)