Lungern (Swiss Standard German pronunciation: [ˈlʊŋərn] ) is a municipality in the canton of Obwalden in Switzerland . It encompasses Lake Lungern and, besides the village of Lungern, the settlements of Bürglen, Kaiserstuhl and Obsee.

The village of Lungern lies 750 metres (2,460 ft) above sea level in the highest part of the canton of Obwalden, on the eastern shore of the Lake of Lungern and at the foot of the Brünig Pass . It is the highest village of the Sarneraa-Valley, in a basin open only to the north and surrounded on all other sides by steep and woody inclinations and rocks.

To the south-west the municipality extends to the Brünig Pass. On its north-western side, the municipal boundary is set by the Wilerhorn and Höch Gumme mountains, and includes the whole of the Lake of Lungern.