GHB or gamma-hydroxybutyric acid is a naturally occurring neurotransmitter and a psychoactive drug.
GHB may also refer to: GHB Records, an American record label Great Highland bagpipe, the Scottish national musical instrument Gabo d'Hirutho d'Bethnahrin, Assyrian-Syriac party Gerakan Harapan Baru, a political movement in Malaysia Governor's Harbour Airport's IATA code Good Humor-Breyers, Unilever's American ice cream division Trackpoint, the pointing device between G, H and B keys on some laptops