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 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