Jean-Louis Trintignant as Marcello Clerici

Stefania Sandrelli as Giulia

Gastone Moschin as Manganiello

Dominique Sanda as Anna Quadri

Enzo Tarascio as Professor Quadri

Fosco Giachetti as The Colonel

José Quaglio as Italo Montanari

Yvonne Sanson as Giulia's Mother

Milly as Marcello's Mother

Antonio Maestri as Confessor

Alessandro Haber as Drunk Blind Man

Luciano Rossi as Blind Blond

Massimo Sarchielli as Blind Man

Pierangelo Civera as Franz

Giuseppe Addobbati as Marcello's Father

Christian Aligny as Raoul

Carlo Gaddi as Hired Killer

Umberto Silvestri as Hired Killer

Furio Pellerani as Hired Killer

Luigi Antonio Guerra as

Orso Maria Guerrini as

Pasquale Fortunato as Young Marcello

Pierre Clémenti as Pasqualino 'Lino' Semirama

Sergio Graziani as Marcello Clerici (voice)

Rita Savagnone as Anna (voice)

Arturo Dominici as The Colonel (voice)

Giuseppe Rinaldi as Italo (voice)

Lydia Simoneschi as Giulia's Mother (voice)

Gianni Amico as Pupil Prof. Quadri (uncredited)

Joel Barcellos as Pupil Prof. Quadri (uncredited)

Christian Belaygue as Gipsy (uncredited)

Benedetto Benedetti as Minister (uncredited)

Claudio Cappeli as Hired Killer (uncredited)

Romano Costa as Man Opening the Door (uncredited)

Marilyn Goldin as Flower Seller (uncredited)

Marta Lado as Marcello's Daughter (uncredited)

Giorgio Pelloni as Pupil Prof. Quadri (uncredited)

Filippo Perego as Man in Elevator (uncredited)

Gino Vagniluca as Secretary (uncredited)