Rudolph IV or Rudolf IV may refer to:
Rudolph IV, Count of Neuchâtel (1274–1343) Rudolf IV, Margrave of Baden-Pforzheim (died 1348) Rudolf IV, Duke of Austria (1339–1365) (1350–1403) Rudolf IV, Margrave of Hachberg-Sausenberg (1426/7–1487) Rudolph IV, Prince of Anhalt-Dessau (died 1510)
See also Rudolph I (disambiguation) Rudolph II (disambiguation) Rudolph III (disambiguation)