Aldra[1] is an island in Lurøy Municipality in Nordland county, Norway.

It is located just off the mainland coast, north of the village of Haugland and west of Brattland.

The island is separated from the mainland by the Aldersundet strait.

The village of Aldra lies on the southeastern side of the island.

An antenna, spanning the fjord to Brattland, was used as part of the OMEGA Navigation System until 1997.