The Count of Hainaut was a noble title in the historical region of Hainaut, which is now part of modern-day Belgium. The title was held by various rulers from the 9th century until the late 15th century, playing a significant role in the feudal system of medieval Europe. The Counts were influential in local governance and often engaged in alliances and conflicts with neighboring territories. Hainaut was part of the larger County of Flanders and was known for its rich resources and strategic location. The title eventually merged with other noble titles, such as the Duke of Brabant, as political boundaries shifted and dynastic unions occurred in the region.