Sneiselii is a village in Tinn Municipality, in Telemark, Norway. Sneiselii lies at 1,043 m above sea level, 0.5 km from the Scandinavian mountains. The nearest city is Kongsberg, 76 km to the east. Among the landmarks around are Vemork (12.8 km), Norwegian Industrial Workers Museum (12.8 km) and Frøystul fjellkirke (3.7 km). Among the natural features are Rjukan Falls (11.7 km).