Mangshi River (Chinese: 芒市河; Tai Nüa: ᥘᥛᥳ ᥑᥩᥢᥴ) also called Mangshi Large River (Chinese: 芒市大河), is a river in western Yunnan, mainly in the territory of Mangshi City.

The source of Mangshi River is at Longxin Township in Longling County, Baoshan, and the upper also called Bawan River (Chinese: 八湾河).

Mangshi River flows through the west fields of Mangshi city, and it flows in Shweli River at Gazhong Village (Chinese: 戛中村) in Zhefang.

It is the mother river of Mangshi.

[2] The length of Mangshi River is 117.1 km, and the basin size is 1,881 km², about 61.3% of area of Mangshi City.