Rangsundøya[1] is an island in Rødøy Municipality in Nordland county, Norway.

The 7.6-square-kilometre (2.9 sq mi) island of Rangsundøya is located off the Helgeland coast in a large group of islands.

The island of Gjerdøya lies to the north, Storselsøya lies to the southwest, Renga to the northeast, and the mainland is to the south and east.

The highest point on the island is the 267-metre (876 ft) tall mountain Rangsundtinden.

This article about an island in Nordland is a stub.