The Deadly Mantis is a 1957 American science fiction monster film produced by William Alland for Universal-International. The film was directed by Nathan Juran from a screenplay by Martin Berkeley based on a story by producer William Alland. The Deadly Mantis stars Craig Stevens, William Hopper, Alix Talton and Pat Conway.

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.