Brunei is the country split into two non-contiguous parts by Malaysia’s Limbang District.
Brunei occupies a narrow stretch of Borneo’s northern coast, but Malaysia’s Sarawak state surrounds it on land. Limbang projects between Brunei’s western districts—Belait, Tutong and Brunei-Muara—and the eastern Temburong District, creating the country’s unusual divided shape.
The separation emerged during the territorial contraction of the Bruneian sultanate. Sarawak’s White Rajahs took control of Limbang in 1890, leaving Temburong detached from the rest of Brunei. Brunei has historically disputed that loss, making Limbang central to Brunei–Malaysia border relations.
Temburong is therefore an exclave of Brunei, although it has road access to the rest of the country via the Sultan Haji Omar Ali Saifuddien Bridge, completed in 2020. A common mix-up is to call Limbang a Bruneian exclave: Limbang is Malaysian territory; it is the Bruneian territory that is separated.