Nissedal Municipality

Nissedal (Norwegian pronunciation:; locally) is a rural municipality in Telemark region of Telemarkcounty, Norway. It is part of the traditional regions of Upper Telemark and Vest-Telemark. The administrative centre of the municipality is the village of Treungen. Other villages in Nissedal include Kyrkjebygda and Felle.

The 905.17-square-kilometre (349.49 sq mi) municipality is the 129th largest by area of the 357 municipalities in Norway. Nissedal Municipality is the 304th most populous municipality in Norway with a population of 1,509. The municipality's population density is 1.9 inhabitants per square kilometre (4.9/sq mi) and its population has increased by 4.6% over the previous 10-year period. Nissedal Municipality has 2,246 vacation homes, so the population swells during holidays and vacation times.

Nissedal Municipality has been nicknamed the "Telemark Riviera" for its close proximity to Gautefall Alpine Center and for its many campgrounds and outdoor activities. There are a total of 1,750 lakes in the municipality, including Nisser, the seventh-largest lake in Norway, after which Nissedal is named. Gautefall, which is home to Telemark County's largest alpine center, lies adjacent to the municipality. For residents of the Oslo Fjord area, Gautefall is the nearest winter sport destination.

Nissedal's terrain is characterized by roche moutonnée rock formations, mountains, valleys, forests, wetlands, and lakes. Nissedal is a popular destination for outdoor activities such as paddling, fishing, swimming, mountain biking, hiking, kayaking, skiing, boating, and more. It is recognized as one of Norway’s best places for mountain climbing. Nissedal is home to , one of Norway's most popular mountain climbing destinations.