Leopold IV.
Leopold IV is the name of the following ruler:
- Leopold IV of Habsburg ( the fat / proud ; 1371–1411), Duke of Austria (1386–1411)
- Leopold IV. Friedrich (Anhalt-Dessau) , Duke (1817–1871)
- Leopold IV. (Lippe) , Prince (1905–1918), previously as Leopold zu Lippe-Biesterfeld Grafregent zur Lippe
- Leopold (Bavaria) ( the Bountiful ; ~ 1108–1141), Margrave of Austria (1136–1141)