Fauske (Norwegian) or Fuossko (Lule Sami) is a municipality located in Nordland county, Norway. It is part of the traditional district of Salten. The administrative centre of the municipality is the town of Fauske. Some of the villages in Fauske include Nystad, Venset, Straumsnes, and Sulitjelma.
The municipality borders Sweden in the east and the municipalities of Sorfold to the north, Bodo to the west, and Saltdal to the southeast. The town is located on the northern shore of Skjerstad Fjord.
The 1,197-square-kilometre (462 sq mi) municipality is the 90th largest by area out of the 356 municipalities in Norway. Fauske is the 114th most populous municipality in Norway with a population of 9,739. The municipality's population density is 8.8 inhabitants per square kilometre (23/sq mi) and its population has increased by 2% over the previous 10-year period.