Rostøya or
Rostøy is an
island in
Austevoll municipality in
Hordaland county,
Norway. It is located north of the island of
Drøna and west of the island of
Huftarøy. The village of
Kolbeinsvik lies about south of Rostøya. The island is connected to Huftarøy by a road bridge that crosses the wide channel separating the islands.