Gransherad is a former municipality in Telemark county, Norway. The 417-square-kilometre (161 sq mi) municipality existed from 1860 until its dissolution in 1964. The area is now part of Notodden Municipality and Kongsberg Municipality. The administrative centre was the village of Gransherad where Gransherad Church is located.

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.