Herefoss is a village in Birkenes Municipality, in Agder, Norway. Herefoss lies at 80 m above sea level. The nearest city is Arendal, 25 km to the east. Among the landmarks around are Herefoss Church (0.5 km), Fjære Church (23 km) and Trinity Church (25 km). Among the natural features are Dobbedalshei (7.1 km) and Høgsteinsheia (9.6 km).