Gamō (written: ) is a Japanese surname. Notable people with the surname include:
Gamō clan (蒲生氏, Gamō-shi), Japanese clan which claimed descent from the Fujiwara clan Gamō Hiroshi (ガモウ ひろし), manga artist known for his works at the magazine Weekly Shōnen Jump Shigeo Gamō (蒲生, 重男; ガモウ, シゲオ, born 1928), Japanese biologist and specialist of crustaceans Gamō Hideyuki (蒲生 秀行, 1583–1612), Japanese daimyō who ruled the Aizu domain Gamō Katahide (蒲生 賢秀) (1534–1584), Japanese daimyō of the Sengoku and Azuchi-Momoyama periods , Japanese handball player Gamō Ujisato (蒲生 氏郷, 1556–1595), Japanese daimyō of the Sengoku and Azuchi-Momoyama periods , Japanese educator