Gremlins is a 1984 American black comedy horror film directed by Joe Dante, written by Chris Columbus and starring Zach Galligan, Phoebe Cates, Hoyt Axton, Polly Holliday and Frances Lee McCain, with Howie Mandel providing the voice of Gizmo the mogwai. It draws on legends of folkloric mischievous creatures that cause malfunctions—"gremlins"—in the British Royal Air Force going back to World War II. The story follows Billy Peltzer, who receives Gizmo as a pet, who then spawns more of his kind that evolve into the titular imp-like monsters that wreak havoc on Billy's hometown during Christmas Eve.

The film was accompanied by a large merchandising campaign and juxtaposes black comedy with a Christmastime setting. Steven Spielberg was the film's executive producer, with the film being produced by Michael Finnell.

This film uses black humor to spoof multiple genres, particularly family films, Christmas movies, and classic B-movie monster horror.

Gremlins was theatrically released on June 8, 1984, by Warner Bros. to critical and commercial success. However, it was heavily criticized for some of its more violent sequences. In response to this and to similar complaints about Indiana Jones and the Temple of Doom, Spielberg suggested that the Motion Picture Association of America (MPAA) alter its rating system, which it did within two months of the film's release, creating a new PG-13 rating. It was followed by a sequel, Gremlins 2: The New Batch (1990).