| Chengnan Subdistrict | |
| Settlement Type: | Subdistrict |
| Pushpin Map: | China Tibet topography |
| Pushpin Label: | Chengnan |
| Pushpin Map Caption: | Location within Tibet |
| Coor Pinpoint: | Chengnan Subdistrict office |
| Coordinates: | 29.27°N 88.8801°W |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Autonomous region |
| Subdivision Name1: | Tibet |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Shigatse |
| Subdivision Type3: | District |
| Subdivision Name3: | Samzhubzê |
| Area Total Km2: | 90 |
| Population As Of: | 2010 |
| Population Total: | 50,857 |
| Population Blank1 Title: | Major Nationalities |
| Population Blank1: | Tibetan |
| Population Blank2 Title: | Regional dialect |
| Population Blank2: | Tibetan language |
| Timezone1: | China Standard |
| Utc Offset1: | +8 |
| Postal Code Type: | Postal code |
Chengnan Subdistrict (;) is a subdistrict of Samzhubzê District, Shigatse, in the Tibet Autonomous Region of China. At the time of the 2010 census, the subdistrict had a population of 50,857 and an area of .[1], it has five residential communities (Chinese: 社区) under its administration.[2]