Tutong is a district (daerah in the Malay language) in Brunei and its capital is Pekan Tutong or Tutong Town (in English). The district borders the South China Sea to the north, the Bruneian district of Brunei and Muara and the Malaysian state of Sarawak to the east and the Bruneian district of Belait to the west. It has a population of 35,200, and covers 1,303 km² (503 mi²). The Sungai Tutong river flows through Tutong.