Skien is a municipality in Telemark county, Norway. It is located in the traditional district of Grenland, although historically it belonged to Grenmar/Skiensfjorden, while Grenland referred the Norsjø area and Bø. The administrative centre of the municipality is the city of Skien, which is also the administrative centre of the whole county. Some of the notable villages in the municipality include Åfoss, Hoppestad, Klovholt, Luksefjell, Melum, Kilebygda, Skotfoss, Sneltvedt, and Valebø.