Long Mỹ is a rural district of HáºÂu Giang province in the Mekong Delta region of Vietnam. As of 2019 the district had a population of 84,089. The district covers an area of 259.92 km<sup>2</sup>. The district capital lies at Vénh Viá» n town.
On May 14, 2015, the townships of Long Mỹ, TràLá»Âng and the communes of Long Bình, Long Phú, Long Trá»Â, Long Trá» A and Tân Phú were separated from the district to form the new district-level town of Long Mỹ.
The district is divided into 1 township and 7 rural communes, including: