Giske is an island municipality in Møre og Romsdal county, Norway. The municipality lies north-northwest of the town of Ålesund in the traditional district of Sunnmøre. The municipal centre is Valderhaugstrand. Other population centres include the villages of Roald and Alnes and Leitebakk. The municipality is part of the Ålesund Region.

Møre og Romsdal is a county in the northernmost part of Western Norway. It borders the counties of Trøndelag, Innlandet, and Vestland. The county administration is located in the town of Molde, while Ålesund is the largest town. The county is governed by the Møre og Romsdal County Municipality which includes an elected county council and a county mayor. The national government is represented by the county governor.