G
- Jimmy Gambino (Thirteen Ghosts)
- Richard "Richie" Gecko (From Dusk till Dawn) - Quentin Tarantino
- Seth Gecko (From Dusk till Dawn) - George Clooney
- Ghostface aka Father Death (Scream) - Dane Farwell
- Alissa Giordano (Blood Night: The Legend of Mary Hatchet) - Danielle Harris
- Giorgio (Castle Freak) - Johnathan Fuller
- Glendora (2001 Maniacs) - Cristin Michele
- Jacob Goodnight (See No Evil) – Kane
- Lawrence Gordon (Saw) - Cary Elwes
- Chloe and Jack Grefe (Lovers Lane) - Richard Sanders and Sarah Lancaster
- Jean-Baptiste Grenouille ("Perfume: The Story of a Murderer")-
- David Allen Griffin (The Watcher) – Keanu Reeves
- Grizzly Teddy (Demonic Toys and its sequels)
- Jame Gumb (The Silence Of The Lambs) - Ted Levine
- Giant Burrowing Sand Monster (Blood Beach)
Read more about this topic: List Of Horror Film Antagonists