Välvsjön is a village in Skellefteå Municipality, in Västerbotten County, Sweden. Välvsjön lies at 186 m above sea level. The nearest city is Skellefteå, 52 km to the northeast. Among the landmarks around are Bygdsiljum Church (4.4 km), Botsmark Church (13.5 km) and Överklintens kyrka (16.5 km).