Sachseln is a municipality in the canton of Obwalden in Switzerland. It has a population of 4400 of which 500 are of foreign nationality (2000).

There are 260 local businesses which employ 2100 people. 12% of these are in the agricultural sector, 60% in trade and industry, 28% in services.

The main sights of Sacheln are: the local saint Bruder Klaus (place of birth, place of residence, museum, crust Flüeli-Ranft), a church of pilgrimage, the school building Mattli, and the geographical centre of Switzerland Aelggi.