| Nan County | |
| Postal Code Type: | Postal code |
| Settlement Type: | County |
| Pushpin Map: | China Hunan#China |
| Pushpin Label: | Nanxian |
| Pushpin Map Caption: | Location in Hunan |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hunan |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Yiyang |
| Area Total Km2: | 1321 |
| Population Total: | 725562 |
| Population Density Km2: | auto |
| Coor Pinpoint: | Qingshuizui |
| Coordinates: | 29.213°N 112.407°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Nan County, or Nanxian is a county in the Province of Hunan, China, it is under the administration of the prefecture-level city of Yiyang.
Located in the northern margin of the province, the county is bordered to the north by Shishou City of Hubei, to the northeast by Huarong County, to the east by Yueyang County, to the south by Yuanjiang County, to the southwest by Hanshou County and Dingcheng District of Changde City, to the northwest by Anxiang County. Nan County covers 1346.62km2, as of 2015, it had a registered population of 683,500 and a permanent resident population of 632,800.[1] The county has 14 towns and 1 township under its jurisdiction, the county seat is Nanzhou (Chinese: 南洲镇).
Through the amalgamation of township-level divisions in Nan County on November 26, 2015, Nan County had 13 towns and 2 townships under its jurisdiction.[2] In 2017, the township of Zhongyukou was reorganized as a town, the county has a township and 14 towns.;[3]