Kløftefoss is a village in Modum Municipality, in Buskerud, Norway. Kløftefoss lies at 186 m above sea level, 1.4 km from the Holleia mountains. The nearest city is Drammen, 44 km to the southeast. Among the landmarks around are Blaafarveværket (19.8 km), Holmen Church (12.1 km) and Snarum Church (7.3 km). Among the natural features are Hønefossen (25 km) and Snarumselva (16.4 km).