Midt-Telemark is a traditional district of Norway situated in Telemark county. It is made up of two municipalities: Midt-Telemark and Nome. The largest population centres in the region are Bø, Ulefoss, Bjervamoen, and Gvarv, of which Bø is the largest with 3,609 inhabitants. The district is located between Øvre Telemark (upper Telemark) and Nedre Telemark (lower Telemark).
Historically, the areas of Midt-Telemark included the old parishes of Bø and Sauherad. Both parishes became municipalities on 1 January 1838 when the formannskapsdistrikt law came into effect. Lunde Municipality was split off from Bø in 1867. In 1964, Lunde was merged with the neighboring Holla Municipality to form the new Nome Municipality. Holla was never historically part of Midt-Telemark, instead it was often included in the Grenland district.