Rudolf I of Saxe-Wittenberg

Rudolf I (c. 1284–1356) ruled Saxe-Wittenberg from 1298, under his mother Agnes of Habsburg's regency until 1302. As Saxon elector he backed Frederick the Fair in the double election of 1314; after Frederick's defeat at Mühldorf in 1322 he reconciled with Emperor Louis IV.

The only elector at Charles IV's 1346 coronation, he received the Altmark in 1347; the Golden Bull of 1356 confirmed him as Elector of Saxony. He founded Wittenberg's All Saints' Monastery and died on 12 March 1356.