Kopparnäs is a locality in Piteå Municipality, in Norrbotten County, Sweden. Kopparnäs lies at 9 m above sea level. It has 219 inhabitants (2023). The nearest city is Piteå, 9.6 km to the south. Beaches nearby: Räkan (7.2 km). Among the landmarks around are Piteå City Church (9.6 km), Öjeby Church (7.7 km) and Rosvik Church (10.0 km).