Marcello Mastroianni as Marcello Polletti

Ursula Andress as Caroline Meredith

Elsa Martinelli as Olga

Salvo Randone as Professor

Massimo Serato as Lawyer Rossi

Milo Quesada as Rudi

Luce Bonifassy as Lidia Poletti

George Wang as Chinese Hunter

Evi Rigano as Victim at Hunt Ministry

Walter Williams as Cole

Richard Armstrong as Chet

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 Martin (uncredited)

Gino Pernice as Hunter (uncredited)

Massimo Righi as Journalist (uncredited)

Giovanni Ivan Scratuglia as Priest in Aeroplane (uncredited)

Claudio Mancini as Airplane Pilot (uncredited)

Beryl Cunningham as Masoch Club Patron (uncredited)

Giuseppe Marrocco as Masoch Club Patron (uncredited)

Oscar Sciamanna as Masoch Club Patron (uncredited)