» full cast
| Air Force Lieutenant | Walt Hazzard |
| Ape | Janos Prohaska |
| Bancroft | Arthur Peterson |
| Bango | George Patterson |
| Bongo | Ed Wade |
| Bingo | Les Brown Jr. |
| Bunny | Nancy McCarthy |
| Burt | Sterling Holloway |
| Colonel | Edward Faulkner |
| Commentator | Chick Hearn |
| Commodant | Henry Corden |
| Copilot | James Spencer |
| Corwell | Booth Colman |
| Dr. Boris Balinkoff | Vito Scotti |
| Dubov | Harold J. Stone |
| Duke Williams | Denny Miller |
| Erika Tiffany Smith | Zsa Zsa Gabor |
| Farrell's Accomplice | K.L. Smith |
| Gen. Bryan | Russell Thorson |
| General | Frank Maxwell |
| George Barkley | Strother Martin |
| Gilligan | Bob Denver |
| Ginger Grant | Tina Louise |
| Ginger | Kit Smythe |
| Hank | Louis Quinn |
| Harold Hecuba | Phil Silvers |
| Hartley | Bartlett Robinson |
| Head Hunter | Russ Grieve |
| Himself | Al Schottelkotte |
| Himself | John Facenda |
| Igor | Mike Mazurki |
| Igor | Vincent Beck |
| Interviewer | George N. Neise |
| Irving | Kirby Johnson |
| Ivan | Danny Klega |
| Jackson Farrell | Larry Storch |
| Johnny | Michael Witney |
| Jonathan Kincaid | Rory Calhoun |
| Jose | Bert Madrid |
| Jungle Boy | Kurt Russell |
| Kalani | Midori |
| King Kaliwani | Stanley Adams |
| Little Gilligan | Patrick Denver |
| Lord Beasley Waterford | John McGiver |
| Lucky | Herb Vigran |
| Lucky | Jack Sheldon |
| Maj. Adams | Harry Lauter |
| Mary Ann Summers | Dawn Wells |
| Michaels | Rudy LaRusso |
| The Mosquitoes | The Wellingtons |
| Thurston Howell III | Jim Backus |
| Eunice Lovelle Wentworth Howell | Natalie Schafer |
| Native #1 | Mickey Morton |
| Native #2 | Robert Swimmer |
| Native | Al Ferrara |
| Native | Allen Jaffe |
| Native | Eddie Little Sky |
| Native | Frank Corsentino |
| Native | Jim Lefebvre |
| Native | Paul Daniel |
| Native | Pete Sotos |
| Native | Roman Gabriel |
| Native Daughter | Mary Foran |
| Native Mother | Henny Backus |
| Newscaster | Larry Thor |
| Norbert Wiley | Don Rickles |
| Parrot | Mel Blanc |
| Parsons | Kirk Duncan |
| Pilot | Glenn Langan |
| Prison Guard | Harry Swoger |
| The Professor | John Gabriel |
| Professor Roy Hinkley | Russell Johnson |
| Radio Announcer | Charles Maxwell |
| Radio Announcer | Vernon Scott |
| Ramoo | Harold Sakata |
| Robot | Bob d'Arcy |
| Rodriguez | Nehemiah Persoff |
| Russian Agent | Richard Kiel |
| Jonas 'The Skipper' Grumby | Alan Hale Jr. |
| Tobias | Scott Graham |
| Ugundi | Michael Forest |
| Wrongway Feldman | Hans Conried |