Roman Polanski
Mosquito
Romolo Valli
Giovanni
Marcello Mastroianni
Alex
Guido Alberti
Priest
Henning Schlüter
Catone
Hugh Griffith
Joseph Noblart
Dieter Hallervorden
German
Carla Mancini
François Périer
Enzo
Alvaro Vitali
Cross-Eyed Painter
Sydne Rome
Nancy
John Karlsen
Edward
Livio Galassi
Nerina Montagnani
Renate Langer
Naked Girl with Hat (uncredited)
Mogens von Gadow
German
Richard McNamara
Charlie