Upper Telemark (Norwegian: Øvre Telemark) is a traditional district in Telemark county in Norway. The area includes the inland areas of Telemark. More than two-thirds of the total area of Telemark—more than 10,000 square kilometres (3,900 sq mi)—belong to the traditional region of Upper Telemark. Conversely, the area of "Lower" Telemark refers to the more densely populated, flatter coastal area of Grenland and traditionally also includes Central Telemark. Upper Telemark has a varied and often scenic landscape, with many hills, mountains, valleys and lakes.
Upper Telemark was originally known simply as Telemark and is named for the Thelir (Old Norse: Þilir), the ancient North Germanic tribe that inhabited what is now called Upper Telemark and Numedal in the Migration Period and the Viking Age. Upper Telemark is known for its folk traditions within music, clothing, handcrafts, food and architecture. The region is also distinctly marked by its dialect of Norwegian.