| Chenxi County | |
| Other Name: | Chenki |
| Postal Code Type: | Postal code |
| Postal Code: | 4195XX |
| Settlement Type: | County |
| Pushpin Map: | China Hunan |
| Pushpin Label: | Chenxi |
| 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: | Huaihua |
| Seat: | Chenyang |
| Area Footnotes: | [1] |
| Area Total Km2: | 1976.81 |
| Population Footnotes: | [2] |
| Population Total: | 453565 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Coordinates: | 28.006°N 110.185°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Chenxi County is a county in Hunan Province, China, it is under the administration of Huaihua prefecture-level City.
Located on the north of the province, it is adjacent to the north of the city proper of Huaihua. The county is bordered to the north by Yuanling County, to the east by Xupu County, to the south by Zhongfang County and Hecheng District, to the west by Mayang and Luxi Counties. Chenxi County covers 1990.3km2, as of 2015, It had a registered population of 530,000 and a resident population of 461,400.[3] The county has nine towns and 14 townships under its jurisdiction, the county seat is Chenyang (Chinese: 辰阳镇).[4]
During the Second Sino-Japanese War, as part of the Third Front strategy, Chengxi developed into an industrial center. Many government offices and public services moved from Japanese occupied areas to Chengxi and the population increased from 5,000 to over 100,000. Japanese air raids caused hundreds of deaths and burned much of the old city.[5]
On 15 July 1996 the county was hit hard by floods.