A hag is a wizened old woman, or a fairy with the appearance of an old woman. Hag may also refer to: HAG, a Swiss model train company Håg, in Scandinavian mythology Hag (album), a 1971 album by Merle Haggard Hag (Dungeons & Dragons), a class of fictional role playing monster Hag and Mag, a pair of demons in Mandaeism Hag and Troll, demonic super villains in the Marvel Comics Universe Book of Haggai, a book of the Hebrew Bible Café HAG, a brand of decaffeinated coffee Hagley railway station, in England Hag moth (Phobetron pithecium), a moth of the family Hanga language, spoken in Ghana High Assurance Guard, computer security device Hoang Anh Gia Lai Group, a Vietnamese company Jewish holidays (Hebrew: , ) Kari Hag (born 1941), Norwegian mathematician Peat hag, erosion See also Hagg (disambiguation) Haga (disambiguation) Haig (disambiguation) Chag (disambiguation) Night hag (disambiguation)