Henry III, Count of Namur was a nobleman who ruled the County of Namur in present-day Belgium during the late 13th century. He was born around 1250 and became count in 1263 after the death of his father, Albert I, Count of Namur. His reign was marked by efforts to strengthen the county's independence and manage its relationships with neighboring territories. Henry III was known for his involvement in regional politics and alliances, including ties with the Duchy of Brabant and the County of Hainaut. He played a significant role in the political landscape of the Low Countries during his time, navigating the complexities of feudal relationships and conflicts.