20,000 Leagues Under the Sea is a 1954 American science fiction adventure film directed by Richard Fleischer, from a screenplay by Earl Felton. Adapted from Jules Verne's 1870 novel of the same name, the film was personally produced by Walt Disney through Walt Disney Productions. It stars Kirk Douglas, James Mason, Paul Lukas, and Peter Lorre. Photographed in Technicolor, the film was one of the first feature-length motion pictures to be filmed in CinemaScope. It was also the first feature-length Disney film to be distributed by Buena Vista Distribution.

Science fiction is a film genre that uses speculative, fictional science-based depictions of phenomena that are not fully accepted by mainstream science, such as extraterrestrial lifeforms, spacecraft, robots, cyborgs, mutants, interstellar travel, time travel, or other technologies. Science fiction films have often been used to focus on political or social issues, and to explore philosophical issues like the human condition.