Daru Island is an island in the Western Province of Papua New Guinea, the town on the island goes by the same name and is the capital of the Province, housing the vast majority of its population of 20,524 (2009). It is elliptical in shape, with dimensions of 5.0 by 3.7 km², 14.7 km² in area, and up to 27 meters high. The island is separated from the mainland in the north, specifically the mouth of Oriomo River, by the 3.5 km wide Daru Roads.