Rudolf I, Margrave of Baden

Rudolf I (1230–19 November 1288), son of Margrave Herman V of Baden, acted as regent for his nephew Margrave Frederick I from 1250 to 1267 and ruled Baden as margrave from 1268 until his death. After his brother Herman VI married into the Austrian ducal family, Rudolf ruled Baden-Baden alone.

In 1257 he married Kunigunde of Eberstein, through whom he acquired Eberstein Castle, and in 1250 he began building Hohenbaden Castle. He patronized churches and abbeys and was buried at Lichtenthal Abbey.