Muara is a town in the Brunei and Muara district, Brunei. It contains the country's only deep-water port. Muara is the Malay word for estuary.
Muara Town or Pekan Muara is located in Mukim Serasa and is located on the easternmost tip of West Brunei. It lends its name to the district which it is in, the Brunei-Muara district. To the North is the South China Sea , to the south the Brunei Bay and across the bay, Pulau Muara Besar. To the east, across a man-made channel is the remains of Tanjung Pelumpong (Cape Pelumpong), now an island. To the west is the rest of the Brunei-Muara district. Serasa lies to the south-west of Muara.