Kåfjord (Norwegian), Gávvuonna (Northern Sami), Kaavuono (Kven)[2] is a village in Alta Municipality in Finnmark county, Norway.

The village is located along the Kåfjorden, about 18 kilometres (11 mi) west of the town of Alta along the European route E6 highway.

At the summit of Mount Haldde, about 9 kilometres (5.6 mi) by a track from Kåfjord, is a restored Northern Lights Observatory, established by Kristian Birkeland in 1899 and operational until 1926, when it was transferred to Tromsø.

During the Second World War, the German battleship Tirpitz used Kåfjord as a harbour, and she was damaged there by British aircraft and by Royal Navy midget submarines in Operation Source.

Tirpitz was badly damaged, crippled, and out of action until May 1944; it was destroyed on 12 November 1944 by Avro Lancaster bombers, during Operation Catechism in Tromsø, Norway.