Temburong District (; Jawi: دائيره تمبوروڠ) or simply Temburong () is the easternmost district in Brunei. It is an exclave — the land is separated from the rest of the country by Malaysia and Brunei Bay, and accessible from the mainland via the Sultan Haji Omar Ali Saifuddien Bridge. It has a total area of . The population was 10,251 in 2016; it is the least populous district in the country. Bangar is the district town and administrative centre. Geography The district is surrounded by Brunei Bay to the north and Sarawak, Malaysia to the east, south and west. The Temburong River flows through the district, and the Sungai Pandaruan river forms the western section of the border with Malaysia. The highest point is Bukit Pagon with the height of . It is also the highest point in the country. Brunei's first national park, the Ulu Temburong National Park, is located south of the Temburong district, covering of the Temburong forest. The national park has a scientific research centre facility, the Kuala Belalong Rainforest Field Studies Centre, which is only accessible by boat. of the Kuala Belalong area had been allocated for joint venture research projects conducted by the Universiti Brunei Darussalam, Kuala Belalong Field Studies and the Smithsonian Tropical Research Institute. It is called the "Belalong Rainforest Experience," and is funded by The Hongkong and Shanghai Banking Corporation: Brunei. An Outward Bound centre can also be found within the national park. Temburong has of roads connecting Bangar to interior villages. In addition a further of roads connect villages in the interior. A new roadway connecting the Muara and Temburong districts of Brunei was completed in March 2020. of this roadway crosses the Brunei Bay. Administration The district administration is the responsibility of Temburong District Office (), a government department under the Ministry of Home Affairs. Temburong District is divided into five mukims: Mukim Amo Mukim Bangar Mukim Batu Apoi Mukim Bokok Mukim Labu These are further subdivided into 76 Kampongs (Villages), however only 57 have a permanent population. According to the Constitution, the district is to be represented in the Legislative Council, the state legislature, by up to 2 members. As of 2017, one member has been appointed to represent the district in the legislature. Demographics Temburong District is the least populous district in Brunei. According to the 2016 census update, the population was 10,251 and made up about