Hadsel is a municipality in Nordland county, Norway. It is part of the traditional district of Vesterålen. The administrative centre of the municipality is the town of Stokmarknes. Other villages in Hadsel include Fiskebøl, Gjerstad, Grønning, Grytting, Hanøyvika, Hennes, Kaljord, Melbu, Sanden, and Sandnes.

Vesterålen is a district and archipelago in Nordland county, Norway. It is located just north of Lofoten and west of Harstad. It is the northernmost part of Nordland county. Sortland is the largest town, situated near the center of the archipelago. Vesterålen includes the municipalities of Andøy, Bø, Hadsel, Sortland, and Øksnes.