Timon C. West is an American film director, producer, screenwriter, editor, cinematographer, and occasional actor, best known for his work in horror films. He directed the horror films The Roost (2005), Trigger Man (2007), The House of the Devil (2009), The Innkeepers (2011), The Sacrament (2013), X and its prequel Pearl, and the Western In a Valley of Violence (2016). He has also acted in a number of films, mostly in those directed by either himself or Joe Swanberg.

X is a 2022 American slasher film written, directed, produced and edited by Ti West. It stars Mia Goth in dual roles: a young woman named Maxine, and an elderly woman named Pearl. The film also stars Jenna Ortega, Martin Henderson, Brittany Snow, Owen Campbell, Stephen Ure and Scott Mescudi appearing in supporting roles. Set in 1979, the film follows a cast and crew who gather to make a pornographic film on an elderly couple's rural Texas property, but find themselves threatened by the homicidal couple.