Kattfoss is a village in Modum Municipality, in Buskerud, Norway. Kattfoss lies at 74 m above sea level, 1.6 km from the Finnemarka mountains. The nearest city is Drammen, 25 km to the southeast. Among the landmarks around are Blaafarveværket (4.2 km), Royal Palace (44 km) and Akershus Fortress (44 km). Among the natural features are Snarumselva (2.1 km) and Haugfoss (4.3 km).