 | Michael Craig als Capt. Cyrus Harding |
 | Joan Greenwood als Lady Mary Fairchild |
 | Michael Callan als Herbert Brown |
 | Gary Merrill als Gideon Spilitt |
 | Herbert Lom als Captain Nemo |
 | Beth Rogan als Elena Fairchild |
 | Percy Herbert als Sgt. Pencroft |
 | Dan Jackson als Cpl. Neb Nugent |
 | Harry Monty als Pirate (uncredited) |
| Cy Endfield | Director |
| John Prebble | Screenplay |
| Daniel B. Ullman | Screenplay |
| Crane Wilbur | Screenplay |
| Jules Verne | Novel |
| Wilkie Cooper | Director of Photography |
| Charles H. Schneer | Producer |
| Bernard Herrmann | Original Music Composer |
| Frederick Wilson | Editor |
| William C. Andrews | Art Direction |
| Ray Harryhausen | Visual Effects |
| Raymond Anzarut | Production Supervisor |
| Robert Sterne | Production Manager |
| René Dupont | Assistant Director |
| Peter Handford | Sound Recordist |
| Bob Jones | Sound Recordist |
| Egil S. Woxholt | Underwater Camera |
| Jack Mills | Camera Operator |
| Marjorie Lavelly | Continuity |
| John Cox | Sound Supervisor |
| Bob Gill | Title Designer |
| Bernard Herrmann | Conductor |
