Alver is a municipality in Vestland county, Norway. It is located in the traditional district of Nordhordland. The administrative centre of the municipality is the village of Knarvik. Other villages include Alversund, Alver, Isdalstø, Lindås, Ostereidet, Seim, Manger, Askeland, Austmarka, Bøvågen, Haugland, Sæbø, Sletta, Frekhaug, Hjartås, Holme, Io, Krossneset, Meland, and Rossland.