Ertvågsøy or Ertvågøya is an island in the municipality of Aure in Møre og Romsdal county, Norway. The island has an area of 139.7 square kilometres (53.9 sq mi) and the highest point is the 694-metre (2,277 ft) tall Korsbekkfjellet. The small islands of Rottøya and Ruøya lie to the east of the island and the islands of Solskjel and Stabblandet lie to the west.