Demilich may refer to:
- A type of lich, a creature in fantasy fiction
- Demilich (band), a Finnish death metal band. In modern Fantasy fiction, a lich (ˈlɪtʃ (sometimes spelled liche, Cognate to German Leiche "corpse" is a type of Fantasy is a Genre that uses magic and other Supernatural forms as a primary element of plot, theme, and/or setting Demilich was a Death metal band from Finland, which formed in the early 1990s and consisted of vocalist/guitarist Antti Boman guitarist Aki Hytönen bassist