Boardinghouse is a 1982 American supernatural slasher film directed, written by, and starring musician John Wintergate. Its plot follows a group of aspiring actresses and models who begin to die mysteriously in a Los Angeles boarding house, which was once the site of a series of bizarre deaths. It carries the distinction of being the first horror film to be shot-on-video.

The film was released on DVD by Code Red in 2008. In 2015, Slasher//Video issued a two-disc edition of the film on DVD, featuring both the 98-minute theatrical cut, and an unofficial extended 157-minute version deemed the "director's cut." The American Genre Film Archive (AGFA) released the film on Blu-ray in 2021 featuring three cuts of the film: The 88-minute theatrical cut; the 98-minute home video cut, and an alternate cut released in 1984 under the title Psycho Killer.