Lower Dibang Valley district
| Lower Dibang Valley district | |
|---|---|
| View of the Dibang River from Bara Golai north of Roing | |
| Location in Arunachal Pradesh | |
| Country | India | 
| State | Arunachal Pradesh | 
| Headquarters | Roing | 
| Area | |
|  • Total | 3,900 km2 (1,500 sq mi) | 
| Population  (2011) | |
|  • Total | 54,080 | 
| • Density | 14/km2 (36/sq mi) | 
| Demographics | |
| • Literacy | 70.4% | 
| • Sex ratio | 919 | 
| Time zone | UTC+05:30 (IST) | 
| Website | roing | 
The Lower Dibang Valley district (/dɪˈbæŋ/ dib-ANG) is an administrative district in the state of Arunachal Pradesh in northeastern India,. .It is the tenth least populous district in the country, and the least densely populated district.