Ludwig III of Thuringia was a German nobleman who ruled as the Landgrave of Thuringia from 1190 until his death in 1227. He was a member of the House of Wettin and played a significant role in the political landscape of medieval Germany. His reign was marked by efforts to strengthen his territory and maintain peace among the various feudal lords. Ludwig III is also known for his support of the Hohenstaufen dynasty, particularly during the conflicts of the Holy Roman Empire. He was involved in various military campaigns and alliances, which helped to shape the region's history during the late 12th and early 13th centuries. His legacy includes contributions to the development of Thuringia as a significant political entity.