Orrträsk is a hamlet in Skellefteå Municipality, in Västerbotten County, Sweden. Orrträsk lies at 262 m above sea level. The nearest city is Skellefteå, 34 km to the east. Among the landmarks around are Bolidens kyrka (17.0 km), Kalvträsks kyrka (22 km) and Granfors Hydroelectric Power Station (10.4 km).