Herøysund is a village in Kvinnherad municipality in Vestland county, Norway. The village is located on the southeastern shore of the Hardangerfjorden, about half-way between the villages of Husnes and Uskedal. The 0.47-square-kilometre (120-acre) village has a population (2019) of 506 and a population density of 1,077 inhabitants per square kilometre (2,790/sq mi).