Valderøya or Valderøy[1] is an island off the west coast of Norway.
It is part of Giske Municipality in Møre og Romsdal county.
Valderøya is also connected to the island Vigra to the north by a short bridge.
[2] The municipal administration, a dentist, and a healthcare service centre for children are found in the municipal hall at Valderhaugstrand, a village on the south side of the island.
Nordstrand and Oksnes are two other small villages on the north-east side of the island.