 Marcello MastroianniMarcello Polletti | Marcello Polletti |
 Ursula AndressCaroline Meredith | Caroline Meredith |
 Elsa MartinelliOlga | Olga |
 Salvo RandoneProfessor | Professor |
 Massimo SeratoLawyer Rossi | Lawyer Rossi |
 Milo QuesadaRudi | Rudi |
 Luce BonifassyLidia Poletti | Lidia Poletti |
 George WangChinese Hunter | Chinese Hunter |
| EEvi RiganoVictim at Hunt Ministry | Victim at Hunt Ministry |
| WWalter WilliamsCole | Cole |
| RRichard ArmstrongChet | Chet |
| AAntonio CianiNot listed | Not listed |
 Anita SandersRelaxatorium Girl (uncredited) | Relaxatorium Girl (uncredited) |
 Pier Paolo CapponiTerrace Snack Bar Manager (uncredited) | Terrace Snack Bar Manager (uncredited) |
 Jacques HerlinMasoch Club Manager (uncredited) | Masoch Club Manager (uncredited) |
 Wolfgang HillingerBaron von Richtofen (uncredited) | Baron von Richtofen (uncredited) |
 Mickey KnoxMartin (uncredited) | Martin (uncredited) |
 Gino PerniceHunter (uncredited) | Hunter (uncredited) |
 Massimo RighiJournalist (uncredited) | Journalist (uncredited) |
| GGiovanni Ivan ScratugliaPriest in Aeroplane (uncredited) | Priest in Aeroplane (uncredited) |
 Claudio ManciniAirplane Pilot (uncredited) | Airplane Pilot (uncredited) |
 Beryl CunninghamMasoch Club Patron (uncredited) | Masoch Club Patron (uncredited) |
 Giuseppe MarroccoMasoch Club Patron (uncredited) | Masoch Club Patron (uncredited) |
 Oscar SciamannaMasoch Club Patron (uncredited) | Masoch Club Patron (uncredited) |
