Notodden is a municipality located in Telemark county, Norway. It is situated within the traditional district of Aust-Telemark, with the town of Notodden serving as its administrative centre.
The municipality includes several other population centres, including the villages of Bolkesjø, Gransherad, Heddal, Hjuksebø, Hjuksevelta, Rudsgrendi, Tinnoset, and Yli.