Districts (Malay: daerah) are the principal administrative divisions of Brunei. The country is divided into four districts, namely Brunei-Muara, Belait, Tutong and Temburong. Temburong is an exclave; it is physically separated from the three other districts by the Brunei Bay and Malaysian state of Sarawak. Each district has a town as its administrative and main economic centre, with the exception of Brunei-Muara, where the principal centre is Bandar Seri Begawan, a city and the country's capital.

The country previously had six districts, namely Brunei, Muara, Limau Manis (also known as Ulu Brunei), Tutong, Belait and Temburong.^[1] In 1908 Brunei and Limau Manis were merged, and in 1938 the districts were restructured to form the present-day four districts.^[1]

Each district is administered by a District Office (Jabatan Daerah), where District Offices are government departments under the Ministry of Home Affairs. The head of each department is a District Officer (Pegawai Daerah) and appointed by the government.^[2]

A district is further divided into mukims, and subsequently each mukim consists of several villages (kampung). Each District Office manages the mukims and villages within its district.

• ISO 3166-2:BN