Holtan is a village in Midt-Telemark Municipality, in Telemark, Norway. Holtan lies at 117 m above sea level, in the Lifjell mountains. The nearest city is Porsgrunn/Skien, 38 km to the southeast. Among the landmarks around are Heddal Stave Church (21 km), Old Bø Church (9.3 km) and Nes Church (2.8 km). Among the natural features are Nybufjellet (10.0 km).