Halsnøya or Halsnøy is an island in Kvinnherad municipality in Hordaland county, Norway. The 38-square-kilometre (15 sq mi) island lies between the Hardangerfjorden and Skånevikfjorden. The island has about 2,300 inhabitants (2008) and it is the most populated island in Kvinnherad municipality. Prior to 2008, it was the most populated island in Norway without a direct connection to land, but the Halsnøy Tunnel opened that year, finally connecting it to the mainland by road.