Kåfjord (Norwegian), Gáivuotna [ˈkaːjːvuo̯tna] (Northern Sami), or Kaivuono (Kven) is a municipality in Troms county, Norway. The administrative centre of the municipality is the village of Olderdalen. Other notable villages include Løkvollen, Manndalen, Birtavarre, Trollvik, Samuelsberg, Nordmannvik, and Djupvik.

Northern or North Sámi is the most widely spoken of all Sámi languages. The area where Northern Sámi is spoken covers the northern parts of Norway, Sweden and Finland. The number of Northern Sámi speakers is estimated to be somewhere between 15,000 and 25,000. About 2,000 of these live in Finland and between 5,000 and 6,000 in Sweden, with the remaining portions being in Norway.