Kopervik is the largest town on the island of Karmøy in Rogaland county, Norway. It is also the administrative centre of the municipality of Karmøy. It is part of the traditional district of Haugaland. The town was also an independent municipality from 1866 until 1965. The 7.53-square-kilometre town has a population of 11,561 and a population density of 1,535 inhabitants per square kilometre.