Lenk im Simmental (or simply Lenk) is a municipality in the Obersimmental-Saanen administrative district in the Canton of Bern in Switzerland .

Lenk is first mentioned in 1370 as An der Leng.

The oldest traces of a settlement in the area come from neolithic artifacts that have been found scattered around the municipality. During the Bronze Age Burgbühl and Bürstehubel were both fortified. Under the Romans the area was on along a major north–south road that passed over the Rawil and Kaltwasser Passes. They built a way station and a small shrine at the Iffigsee and a road and lime kiln at Iffigenalp.