Long Mỹ is a rural district located in the Hậu Giang province within the Mekong Delta region of Vietnam. It serves as a geographical administrative division characterized by its rural landscape and significant land area.
The district covers a total area of 259.92 km2 and had a recorded population of 84,089 as of 2019. Its administrative capital is situated in the town of Vĩnh Viễn.