Rudolf I may refer to:
Rudolf I (bishop of Würzburg) (died 908) Rudolph I of Burgundy (859–912) Rudolf I, Margrave of the Nordmark (d. 1124) Rudolph I, Count Palatine of Tübingen (1160–1219) Rudolph I, Bishop of Schwerin (died 1262) Rudolf I, Margrave of Baden-Baden (1230–1288) Rudolf I of Germany (1218–1291) Rudolf I, Duke of Bavaria (1274–1319) Rudolf I of Bohemia, ( – 1307) Rudolf I, Margrave of Hachberg-Sausenberg (died 1313) Rudolf I, Duke of Saxe-Wittenberg, ( – 1356) Rudolf II, Holy Roman Emperor (1552–1612), who was also Rudolf I of Hungary