Isenfluh is a hamlet in Switzerland, north of the road from Wilderswil to Lauterbrunnen. It is first mentioned in 1319 as Ysenfluo and in 1401 people from the Lötschental started to settle in the small hamlet. The hamlet belonged to the monastery in Interlaken since the 14. century and from 1528 it was administered by the bailiff of Interlaken for 270 years.