Backa is a locality in Rättvik Municipality, in Dalarna County, Sweden. Backa lies at 228 m above sea level. It has 610 inhabitants (2023). The nearest city is Falun, 46 km to the southeast. Among the landmarks around are Dalhalla (3.2 km), Rättvik Church (3.2 km) and Leksand Church (22 km). Among the natural features are Styggforsen (10.9 km) and Springkällan (3.6 km).