Dimnøya or Dimna an island in Ulstein Municipality in Møre og Romsdal county, Norway. The island had 1,347 residents in 2020, many of whom live in the village of Sundgota, the largest settlement on the island. Dimna is connected to the neighboring island of Hareidlandet to the east by a 20-metre (66 ft) wide bridge. The town of Ulsteinvik lies 2 kilometres (1.2 mi) northeast of the island.