The Sanggan River or Sanggan He (), also known in English as Sangkan River, is a river in northern China. It runs 506 kilometers and has a drainage area of 23,900 square kilometers. In addition to its significance in hydrology, it is culturally significant as it has been mentioned in various poems, essays, and novels, including a poem by Chen Tao and a novel The Sun Shines Over Sanggan River by Ding Ling. It is also one of the rivers that gave birth to early civilizations.
The Sangan River is a part of the drainage system of Hai River. It originates in Shanxi Province. It merges with the Yang He (æ´Âæ²³) in Hebei Province and then flows into the Guanting Reservoir. The outflow of the reservoir is known as the Yongding River (formerly known as the Wuding River).