Supaul
| Supaul | |
|---|---|
| Coordinates: 26°07′34″N 86°36′18″E / 26.126°N 86.605°E | |
| Country | India | 
| State | Bihar | 
| Region | Mithila | 
| District | Supaul | 
| Established | 1991 | 
| Government | |
| • Type | Municipality | 
| • Body | Supaul Municipal Council | 
| Area | |
|  • Total | 2,435 km2 (940 sq mi) | 
| Elevation | 34 m (112 ft) | 
| Population  (2011) | |
|  • Total | 2,229,076 | 
| • Density | 920/km2 (2,400/sq mi) | 
| Languages | |
| • Official | Hindi | 
| • Additional official | Urdu | 
| • Regional Language | Maithili | 
| Time zone | UTC+5:30 (IST) | 
| Vehicle registration | BR-50 | 
| Lok Sabha constituency | Supaul | 
| Vidhan Sabha constituency | Supaul, Pipra, Triveniganj, Chhatapur, Nirmali | 
| Website | https://supaul.nic.in/ | 
Supaul is a town and municipality that is headquarters of Supaul district in the Indian state of Bihar.
There are 11 blocks under the Supaul district: Supaul, Kishanpur, Saraigarh-Bhaptiyahi, Pipra, Triveniganj, Raghopur, Chhatapur, Nirmali, Marauna, Basantpur and Pratapganj.
Supaul, previously part of Saharsa district, is part of the Mithila region.