 Charlie ChaplinKing Shahdov | King Shahdov |
 Maxine AudleyQueen Irene | Queen Irene |
 Jerry DesmondePrime Minister Voudel | Prime Minister Voudel |
 Oliver JohnstonAmbassador Jaume | Ambassador Jaume |
 Dawn AddamsAnn Kay - TV Specialist | Ann Kay - TV Specialist |
 Sidney JamesJohnson - TV Advertiser | Johnson - TV Advertiser |
 Joan IngramMona Cromwell - Hostess | Mona Cromwell - Hostess |
 Michael ChaplinRupert Macabee | Rupert Macabee |
 John McLarenMacabee Senior | Macabee Senior |
 Phil BrownHeadmaster | Headmaster |
 Harry GreenLawyer | Lawyer |
 Robert ArdenLiftboy | Liftboy |
 Alan GiffordSchool Superintendent | School Superintendent |
| RRobert CawdronU.S. Marshal | U.S. Marshal |
 George WoodbridgeMember of Atomic Commission | Member of Atomic Commission |
| CClifford BucktonMember of Atomic Commission | Member of Atomic Commission |
| VVincent LawsonMember of Atomic Commission | Member of Atomic Commission |
 Shani WallisSinger | Singer |
| JJoy NicholsSinger | Singer |
| LLauri Lupino LaneComedian | Comedian |
| GGeorge TruzziComedian | Comedian |
 Yvonne RomainOlder Girl | Older Girl |
| TTony CrombieNightclub Drummer (uncredited) | Nightclub Drummer (uncredited) |
| PPat GibsonGirl (uncredited) | Girl (uncredited) |
| AAnne GillenoNurse (uncredited) | Nurse (uncredited) |
| WWendy Graham(uncredited) | (uncredited) |
| LLilian GrassomCute Girl (uncredited) | Cute Girl (uncredited) |
| AArthur GrossAutograph Hunter (uncredited) | Autograph Hunter (uncredited) |
| TTubby HayesNightclub Saxophonist (uncredited) | Nightclub Saxophonist (uncredited) |
 Frazer HinesBoy (uncredited) | Boy (uncredited) |
