Gurskøya or Gurskøy is an island in Møre og Romsdal county, Norway. The island is shared by the municipalities of Sande and Herøy. The villages of Gursken, Larsnes, and Moldtustranda are located on the island. The southern part of the island was historically part of the municipality of Rovde.
The island lies north of the Rovdestranda area on the mainland; east of the islands of Hareidlandet, Dimnøya, and Eika; west of the islands of Kvamsøya, Voksa, and Sandsøya; and south of the Norwegian Sea.
The island is home to many fish-related industries such as fishing and fish processing.