Sauherad is a municipality in Telemark county, Norway. It is part of the traditional region of Midt-Telemark. The administrative centre of the municipality is the village of Akkerhaugen. The municipality borders Kongsberg, Skien, Nome, Bø, and Notodden.
The parish of Søfde (later spelled Saude, then Sauherad) was established as a municipality on 1 January 1838 (see formannskapsdistrikt). The area of Luksefjell was transferred from Sauherad to Gjerpen in 1847.The municipality (originally the parish) is named after the old Sauar farm (Old Norse: Sauðar), since the first church was built here. The name is the plural form of sauðr which means "spring" or "issue of water". The meaning of the combination Sauherad (Old Norse: Sauðaherað) is "the district (herað) of Sauðar". Prior to 1918, the name was written "Saude" or (before 1862) "Søfde".