| Cengong County | |
| Native Name: | 岑巩县 |
| Native Name Lang: | zh-Hans |
| Postal Code Type: | Postal code |
| Settlement Type: | County |
| Coordinates: | 27.1741°N 108.8159°W |
| Coor Pinpoint: | Cengong County government |
| Pushpin Map: | Guizhou#Southwest China |
| Pushpin Label: | Cengong |
| Pushpin Map Caption: | Location of the seat in Guizhou |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Guizhou |
| Subdivision Type2: | Autonomous prefecture |
| Subdivision Name2: | Qiandongnan |
| Seat Type: | County seat |
| Seat: | Siyang |
| Area Total Km2: | 1,486.5 |
| Population Total: | 162,008 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Cengong County, which was called (思州) in ancient times, is a county of eastern Guizhou province, China. It is under the administration of the Qiandongnan Miao and Dong Autonomous Prefecture.
Cengong County is divided into 1 subdistrict, 9 towns, 1 township and 1 ethnic township:[1]