| Long Mỹ district | |
| Settlement Type: | District |
| Native Name: | Huyện Long Mỹ |
| Mapsize: | 240px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Mekong Delta |
| Subdivision Type2: | Province |
| Subdivision Name2: | Hậu Giang |
| Seat Type: | Capital |
| Seat: | Vĩnh Viễn |
| Unit Pref: | Imperial |
| Area Total Km2: | 259.92 |
| Population As Of: | 2019 |
| Population Total: | 84,089 |
| Timezone: | Indochina Time |
| Utc Offset: | +7 |
Long Mỹ is a rural district of Hậu Giang province in the Mekong Delta region of Vietnam. As of 2019 the district had a population of 84,089.[1] The district covers an area of 259.92 km2. The district capital lies at Vĩnh Viễn town.[1]
On May 14, 2015, the townships of Long Mỹ, Trà Lồng and the communes of Long Bình, Long Phú, Long Trị, Long Trị 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: