Bangar is a town in Brunei Darussalam, serving as the administrative centre of Temburong District. It is the district's sole town. Temburong District is an exclave, separated from the rest of Brunei by the Malaysian state of Sarawak.
The town lies within Mukim Bangar, a mukim (sub-district) of Temburong District. The mukim covers a total area of 113 square kilometres and had a population of 2,112 in 2021. Bangar is the main settlement within the mukim and functions as the district's administrative hub.