Sacheon is a city in South Gyeongsang Province, South Korea. Sacheon's chief fame comes from its being the site of two naval battles in the Seven Year War.

South Gyeongsang Province is a province in the southeast of South Korea. The provincial capital is at Changwon. It is adjacent to the major metropolitan center and port of Busan. The UNESCO World Heritage Site Haeinsa, a Buddhist temple that houses the Tripitaka Koreana and tourist attraction, is located in this province. Automobile and petrochemical factories are largely concentrated along the southern part of the province, extending from Ulsan through Busan, Changwon, and Jinju.