Rottøya is an island in the municipality of Aure in Møre og Romsdal county, Norway.

The small island of Ruøya lies just to the north of Rottøya.

The Mjosund Bridge crosses the Mjosundet strait, connecting Rottøya to the island of Ertvågsøya to the west.

The Smalsund Bridge crosses the Smalsundet strait, connecting Rottøya to the island of Ruøya to the north.

This article about an island in Møre og Romsdal is a stub.