Albert I, Margrave of Brandenburg (c. 1250–1300), was a significant figure in the history of the Brandenburg region in present-day Germany. He belonged to the House of Ascania and played a crucial role in the consolidation of power in the area during the late 13th century. His reign marked the beginning of the Brandenburg state's development into a prominent political entity. As Margrave, Albert I focused on expanding his territory and strengthening his influence. He was known for his efforts in promoting trade and securing alliances, which helped lay the groundwork for future rulers of Brandenburg. His legacy contributed to the region's importance in the Holy Roman Empire.