Mukim Seria
| Mukim Seria | |
|---|---|
| Clockwise from top left: Mukim Seria sign, RPN Panaga, Anduki Airfield, Seria Town | |
| Seria is in cyan. | |
| Coordinates: 4°36′N 114°20′E / 4.600°N 114.333°E | |
| Country | Brunei | 
| District | Belait | 
| Government | |
| • Penghulu | Sadin Ibrahim | 
| Area | |
|  • Total | 169 km2 (65 sq mi) | 
| Population  (2021) | |
|  • Total | 18,313 | 
| • Density | 110/km2 (280/sq mi) | 
| Time zone | UTC+8 (BNT) | 
| Postcode | KBxx33 | 
Mukim Seria is a mukim in Belait District, Brunei. It has an area of 169 square kilometres (65 sq mi); the population was 21,214 in 2016. The mukim encompasses Seria, one of the only two towns in the district. It is home to the oil and gas industry of the country.