Upper 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.

Telemark is a county and a current electoral district in Norway. Telemark borders the counties of Vestfold, Buskerud, Vestland, Rogaland and Agder. In 2020, Telemark merged with the county of Vestfold to form the county of Vestfold og Telemark. On 1 January 2024, the county of Telemark was re-established after Vestfold og Telemark was divided again.