Øya is a village in Sigdal Municipality, in Buskerud, Norway. Øya lies at 280 m above sea level, at the foot of the Holleia mountains. The nearest city is Kongsberg, 53 km to the southeast. Among the landmarks around are Rollag Stave Church (15.9 km), Blaafarveværket (35 km) and Nore Stave Church (25 km). Among the natural features are Borofjell (5.9 km).