Louis II of Thuringia was a German nobleman who ruled as the Landgrave of Thuringia from 1217 until his death in 1227. He was a member of the House of Wettin and is known for his efforts to strengthen the power of his territory during a time of political fragmentation in the region. Louis II was also a patron of the arts and played a significant role in the development of Thuringian culture. His reign is often associated with the flourishing of medieval literature and architecture, contributing to the legacy of Thuringia in German history.