The Geochang massacre (, Hanja: 居昌良民虐殺事件) was a massacre conducted by the third battalion of the 9th regiment of the 11th Division of the South Korean Army between 9 February 1951 and 11 February 1951 of 719 unarmed citizens in Geochang, South Gyeongsang district of South Korea. The victims included 385 children. The 11th Division also conducted the Sancheong-Hamyang massacre two days earlier. The general commanding the division was Choe Deok-sin.