Anthony Geary - Bork
Anthony McHugh - Nautilus Radioman
Art Balinger - Announcer
Burgess Meredith - Professor Waldo Cunningham
Burr DeBenning - Lt. Jim Porter
David Westberg - Nautilus Crewman
Harvey Fisher - Nautilus Radioman in Duel in the Deep
Horst Buchholz - King Tibor in Atlantis Dead Ahead
Jerry Maren - Caesar
José Ferrer - Captain Nemo
Lynda Day George - Kate
Med Flory - Tor
Mel Ferrer - Dr. Robert Cook
Nautilus Crewman
Nautilus Crewman
Nautilus Crewman
Nautilus Crewman
Nautilus Crewman
Nautilus Crewman
Nautilus Crewman