Leopold III may refer to:
- Leopold III, Margrave of Austria (1073–1136), sixth Margrave of Austria
- Leopold III, Duke of Austria (1351–1386), co-Archduke of Austria and co-Duke of Styria
- Leopold III, Duke of Anhalt-Dessau (1740–1817), first Duke of Anhalt-Dessau
- Leopold III, Prince of Lippe (1821–1875)
- Leopold III of Belgium (1901–1983), fourth King of the Belgians
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: