Mường Tè is a rural district of Lai Châu province in the Northwest region of Vietnam. As of 2019, the district had a population of 46,143. The district covers an area of 2,679.34 km². The district capital lies at Mường Tè. Mường is equivalent to Mueang. In 2012, the eastern portion of the district was carved out to form Nậm Nhùn district.