In the Mouth of Madness
- Blwyddyn: 1995
- Gwlad: United States of America
- Genre: Horror, Mystery, Fantasy
- Stiwdio: New Line Cinema
- Allweddair: small town, insanity, paranoia, diner, new hampshire, disappearance, author, church, gothic, crucifix, new england, insurance investigator, ghost town, publisher, horror novel, lovecraftian
- Cyfarwyddwr: John Carpenter
- Cast: Sam Neill, Julie Carmen, Jürgen Prochnow, David Warner, John Glover, Bernie Casey