Leopold III, Duke of Austria
| Leopold III the Just | |
|---|---|
Leopold III of Austria by Anton Boys, c. 1580 | |
| Duke of Austria | |
| Reign | 1365–1386 |
| Predecessor | Rudolf IV |
| Successor | William |
| Born | 1 November 1351 Vienna, Duchy of Austria |
| Died | 9 July 1386 (aged 34) Sempach, Swiss Confederacy |
| Burial | |
| Spouse | Viridis Visconti |
| Issue | William the Courteous Leopold IV the Fat Ernest the Iron Frederick IV of the Empty Pockets |
| House | House of Habsburg |
| Father | Albert II of Austria |
| Mother | Joanna of Pfirt |
| Religion | Roman Catholicism |
Leopold III (1 November 1351 – 9 July 1386), known as the Just, a member of the House of Habsburg, was Duke of Austria from 1365. As head and progenitor of the Leopoldian line, he ruled over the Inner Austrian duchies of Carinthia, Styria and Carniola as well as the County of Tyrol and Further Austria from 1379 until his death.