Marcello Mastroianni as Marcello Polletti

Ursula Andress as Caroline Meredith

Elsa Martinelli as Olga

Salvo Randone as Professor

Massimo Serato as Lawyer

Milo Quesada as Rudi

Luce Bonifassy as Lidia

George Wang as Chinese Attacker

Evi Rigano as Victim

Walter Williams as Martin

Richard Armstrong as Cole

Antonio Ciani as

Anita Sanders as Relaxatorium Girl (uncredited)

Pier Paolo Capponi as Terrace Snack Bar Manager (uncredited)

Jacques Herlin as Masoch Club Manager (uncredited)

Wolfgang Hillinger as Baron von Richtofen (uncredited)

Mickey Knox as Chet (uncredited)

Gino Pernice as Hunter (uncredited)

Massimo Righi as Journalist (uncredited)

Giovanni Ivan Scratuglia as Priest in Aeroplane (uncredited)