 Louis HaywardSimon Templar | Simon Templar |
 Naomi ChanceCarol Denby | Carol Denby |
 Sydney TaflerMax Lennar | Max Lennar |
 Charles VictorChief Insp. Claud Teal | Chief Insp. Claud Teal |
 Jane CarrKate Finch | Kate Finch |
 Harold LangJarvis | Jarvis |
 William RussellKeith Merton | Keith Merton |
 Diana DorsThe Blonde in Lennar's Apartment | The Blonde in Lennar's Apartment |
 Fred JohnsonIrish Cassidy | Irish Cassidy |
| TThomas GallagherHoppy Uniatz | Hoppy Uniatz |
 Russell NapierCol. Stafford | Col. Stafford |
 Sam KyddBarkley | Barkley |
| JJohn WynnMan | Man |
| GGeorge MargoLennar's Henchman | Lennar's Henchman |
 Ian FlemingLord Merton | Lord Merton |
| EErnest BlythParty Guest (uncredited) | Party Guest (uncredited) |
 Erik ChittyOlder gang member (uncredited) | Older gang member (uncredited) |
| JJack MandevilleParty Guest (uncredited) | Party Guest (uncredited) |
| BBunny SeamanGambler (uncredited) | Gambler (uncredited) |
| IIan SelbyGambler (uncredited) | Gambler (uncredited) |
| JJohn SmartMerton Party Guest (uncredited) | Merton Party Guest (uncredited) |
| HHarry Van EngelSafari Club patron (uncredited) | Safari Club patron (uncredited) |
 Ian WilsonMan Waiting for Telephone Booth (uncredited) | Man Waiting for Telephone Booth (uncredited) |
