| Tiandeng County | |
| Postal Code Type: | Postal code |
| Settlement Type: | County |
| Pushpin Map: | China Guangxi |
| Pushpin Label: | Tiandeng |
| Pushpin Map Caption: | Location of the seat in Guangxi |
| Coordinates: | 23.081°N 107.143°W |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Region |
| Subdivision Name1: | Guangxi |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Chongzuo |
| Seat Type: | County seat |
| Seat: | Tiandeng Town (Chinese: 天等镇) |
| Area Total Km2: | 2159 |
| Population Total: | 280,473 |
| Population As Of: | 2020 |
| Population Density Km2: | auto |
| Elevation M: | 448 |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Tiandeng (Zhuang; Chuang: Denhdwngj Yen) is a county in the southwest of Guangxi, China. It is the northernmost county-level division of the prefecture-level city of Chongzuo.
There are 6 towns and 7 townships in the county:[1]