Sogn is a traditional district in Western Norway(Vestlandet). It is located in the county of Sogn og Fjordane, surrounding the Sognefjorden, the largest/longest fjord in Norway. The district of Sogn consists of the municipalities of Aurland, Balestrand, Hyllestad, Høyanger, Gulen, Leikanger, Luster, Lærdal, Sogndal, Solund, Vik, and Årdal. The district covers and contains about 35% of the county's population. The largest urban area in Sogn is the village of Sogndalsfjøra (in Sogndal municipality), with 3,455 residents. The second largest urban area is the village Øvre Årdal (in Årdal municipality), with 3,397 people (this village used to be the largest, but recently it was passed by Sogndalsfjøra).
The district of Sogn comprises the southern part of the county Sogn og Fjordane. The districts of Sunnfjord and Nordfjord are the other two districts in the county.