The Suyeong River (수영강, 水營江) is a river that runs through the cities of Yangsan and Busan in Gyeongsangnam-do. It is 30 km in length and also goes by the name Sacheon (사천, 絲川). It starts from the mountain Wonhyosan (원효산, 元曉山:922 m) in Gajisan Provincial Park.
