Yên Châu is a district (huyện) of Sơn La Province in the Northwest region of Vietnam. As of 2003 the district had a population of 62,883. The district covers an area of 844 km². The district capital lies at Yên Châu.
Coordinates: 21°30′00″N 104°19′59″E / 21.500°N 104.333°E / 21.500; 104.333