Gremlins is a 1984 American fantasy 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 main mogwai character. 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 young man Billy Peltzer, who receives a strange creature as a pet, which then spawns other creatures that transform into aggressive imp-like monsters that wreak havoc on Billy's town 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.

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).