| Kỳ Sơn District | |
| Settlement Type: | District |
| Native Name: | Huyện Kỳ Sơn |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | North Central Coast |
| Subdivision Type2: | Province |
| Subdivision Name2: | Nghệ An |
| Seat Type: | Capital |
| Seat: | Mường Xén |
| Unit Pref: | Imperial |
| Area Total Km2: | 2095 |
| Population As Of: | 2003 |
| Population Total: | 63,198 |
| Timezone: | Indochina Time |
| Utc Offset: | +7 |
Kỳ Sơn is a rural district in western Nghệ An Province in the North Central Coast region of Vietnam. As of 2003 the district had a population of 63,198.[1] The district covers an area of 2,095 km². The district capital lies at Mường Xén.[1]
Kỳ Sơn borders Xam Neua in the north, Nong Het and Mok May in the west, Khamkeut and Viengthong in the south, and Tương Dương in the east.
In the past, Kỳ Sơn was best known for opium poppy growing.[2]