Enstaberga is a locality situated in Nyköping Municipality, Södermanland County, Sweden, with 430 inhabitants in 2010. It is within the Tuna-in-Strängnäs Lutheran church parish.Enstaberga is the hometown of Swedish motorcyclist Hans "Hasse" Sandberg—who lives on the south side of Tunavägen (Tuna Road) opposite the former original main manufacturing facility of Abece, a worldwide supplier of roofing tiles; that company moved into Nyköping in 2010.