- Marcello Mastroianni
- Marcello Poletti
- Ursula Andress
- Caroline Meredith
- Elsa Martinelli
- Olga
- Salvo Randone
- Professor
- Massimo Serato
- Lawyer Rossi
- Milo Quesada
- Rudi
- Luce Bonifassy
- Lidia Poletti
- George Wang
- Chinese Hunter
- Evi Rigano
- Victim
- Walter Williams
- Martin Tibbett
- Richard Armstrong
- Cole
- Tonino Cianci
- (as Antonio Ciani)
- Ennio Antonelli
- Furniture Mover
- Jeff Cameron
- Gladiator
- Pier Paolo Capponi
- Terrace Snack Bar Manager
- Jacques Herlin
- Masoch Club Manager
- Wolfgang Hillinger
- Baron von Richtofen
- Mickey Knox
- Chet
- Giuseppe Marrocco
- Masoch Club Patron
- Harold Null
- Ministry Lecturer
- Gino Pernice
- Hunter
- Massimo Righi
- Journalist
- Anita Sanders
- Relaxatorium Girl
- Oscar Sciamanna
- Masoch Club Patron
- Giovanni Ivan Scratuglia
- Priest in Aeroplane