Sunnansjö is a village in Vindeln Municipality, in Västerbotten County, Sweden. Sunnansjö lies at 213 m above sea level. It has 557 inhabitants. The nearest city is Umeå, 54 km to the east. Among the landmarks around are Vindelns kyrka (21 km), Örträsks kyrka (18.4 km) and Bjurholms kyrka (18.9 km).