Rolvsøya (Norwegian) or Gádde-Iččát (Northern Sami)[1] is an island in Måsøy Municipality in Finnmark county, Norway.

The island is located south of the island of Ingøya and north and west of the mainland, separated by the Rolvsøysundet.

The island is mountainous and is almost bisected by the Valfjorden from the west and the Langfjorden from the east with an 800-metre (2,600 ft) wide swampy isthmus in between.

On the west side lies the fishing village of Tufjord and on the eastern side is the seaside village of Gunnarnes where there is a ferry connection to the villages of Havøysund and Ingøy.

Gunnarnes Chapel is located on the east side of the island.