Harstad is a municipality in Troms county, Norway. It is mostly located on the large island of Hinnøya. With a population of 23,344, it is the second-most populated municipality in Troms county. The municipal center is the town of Harstad, the most populous town in Central Hålogaland and the third-largest in all of Northern Norway. The town was incorporated in 1904. Other villages in Harstad include Elgsnes, Fauskevåg, Gausvik, Grøtavær, Kasfjord, Kilbotn, Lundenes and Sørvika.