The Hagberg is a hill, sea level (NN), in the county of Ostalbkreis in the German state of Baden-Württemberg. It is the second highest point of the Swabian-Franconian Forest, a natural region and forested hill range in the northeast of the state. In former times the Hagberg (as e. g. the Asperg and the Hesselberg) formed part of the border between the Swabians and Franks.