 | Kirk Douglas als Ned Land |
 | James Mason als Captain Nemo |
 | Paul Lukas als Prof. Pierre Arronax |
 | Peter Lorre als Conseil |
 | Robert J. Wilke als First Mate of the Nautilus |
 | Ted de Corsia als Capt. Farragut |
 | Carleton Young als John Howard |
 | J. M. Kerrigan als Billy |
 | Percy Helton als Coach Driver |
 | Gloria Pall als Blonde Girlfriend (uncredited) |
 | Ron Nyman als Sailor (uncredited) |
 | Fred Graham als Casey Moore (uncredited) |
 | Harry Harvey als Ticket Agent (uncredited) |
 | Charles Grodin als Drummer Boy (uncredited) |
 | Harper Goff als Minister in San Francisco Steam Packet office (uncredited) |
 | Eddie Marr als Shipping Agent (uncredited) |
 | John Daheim als Nautilus Seaman (uncredited) |
 | Jack Stoney als Police Detective (uncredited) |
 | Laurie Mitchell als One of Ned's Girlfriends |
 | Jack Gargan als Reporter from The Post (uncredited) |
| Dayton Lummis als Reporter from The Bulletin (uncredited) |
 | Jack Pennick als Cannon Mate Carson (uncredited) |
 | Herb Vigran als Reporter for the Globe (uncredited) |
| Franz Planer | Director of Photography |
| Richard Fleischer | Director |
| Jules Verne | Novel |
| Earl Felton | Screenplay |
| Walt Disney | Producer |
| Paul J. Smith | Original Music Composer |
| Elmo Williams | Editor |
| Harper Goff | Production Design |
| Harper Goff | Art Direction |
| C.O. Slyfield | Sound Director |
| Robert O. Cook | Production Sound Mixer |
| Robert O. Cook | Sound Recordist |
| G.R. Danner | Boom Operator |
| John Meehan | Art Direction |
| Emile Kuri | Set Decoration |
| Gustaf Norin | Makeup Supervisor |
| Ub Iwerks | Visual Effects |
| Fred Sersen | Visual Effects |
| Peter Ellenshaw | Visual Effects |
| Louis Hippe | Makeup Artist |
| Ralph Hammeras | Visual Effects |
| Frederic Leahy | Production Supervisor |
| Emmy Eckhardt | Hairstylist |
| James MacDonald | Sound Effects |
| Charles Bovel | Visual Effects |
