Frederick I of Anhalt was a German nobleman who ruled as the Duke of Anhalt from 1252 until his death in 1316. He was a member of the House of Ascania, a prominent dynasty in medieval Germany. Frederick I played a significant role in the political landscape of the region, navigating alliances and conflicts during his reign. Frederick I is known for his efforts to consolidate power within his duchy and for promoting the development of towns and trade. His leadership contributed to the stability and growth of Anhalt, a territory that would later become part of modern-day Germany.