Dornburg is a town in the Saale-Holzland district, in Thuringia, Germany. It sits atop a small hill of 400 ft above the Saale. Since 1 December 2008, it is part of the town Dornburg-Camburg.
Dornburg is mainly known for its three grand ducal castles, once belonging to the former grand-dukes of Saxe-Weimar-Eisenach. These are:
 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.