Mường Lát is a district (huyện) of Thanh Hóa province in the North Central Coast region of Vietnam.

As of 2018, the district had a population of 41,640.

[1] The district covers an area of 810.65 km².

The district capital lies at Mường Lát town.

This article about a location in Thanh Hóa Province, Vietnam is a stub.