Leopold III, Duke of Austria (1351–1386) was a member of the House of Habsburg and served as the Duke of Austria from 1365 until his death. He was the son of Albert II of Austria and Joanna of Pfirt, and he played a significant role in the political landscape of the region during his reign. Leopold III is known for his efforts to consolidate Habsburg power and expand the family's influence in Central Europe. During his rule, Leopold III faced various challenges, including conflicts with neighboring territories and internal strife within the Habsburg domains. He was involved in the Habsburg-Lorraine alliance and worked to strengthen the family's territorial claims. His legacy includes the establishment of the Habsburg dynasty as a dominant force in European politics.