Dayu County
| Dayu County 大余县 Tayu | |
|---|---|
| Location in Jiangxi | |
| Coordinates: 25°24′07″N 114°21′43″E / 25.402°N 114.362°E | |
| Country | People's Republic of China | 
| Province | Jiangxi | 
| Prefecture-level city | Ganzhou | 
| Area | |
|  • Total | 1,367.63 km2 (528.04 sq mi) | 
| Population  (2019) | |
|  • Total | 337,700 | 
| • Density | 250/km2 (640/sq mi) | 
| Postal Code | 341500 | 
Dayu (Chinese: 大余; pinyin: Dàyú) is a county in the west of the prefecture-level city of Ganzhou, in the southwest of Jiangxi Province, bordering Guangdong Province to the south. It is known for The Capital of Tungsten.