The Qin River (Chinese: 沁河; pinyin: Qìn Hé; Wade–Giles: Ch'in Ho) is a tributary of the lower Yellow River (Huang He) in southeast Shanxi province, China. It begins in Qinyuan county, Shanxi and in Wuzhi county of Henan province joins the Yellow River.The river is 485 km long and has a catchment area of 13,500 square kilometers. Its largest tributary is the Dan He 丹河.