The House of Hainaut was a noble family that played a significant role in the history of medieval Europe. Originating in the region of Hainaut, which is now part of modern-day Belgium, the house was influential in the politics and governance of the Low Countries during the 12th to 14th centuries. Members of the House of Hainaut often held titles such as counts and dukes, and they were known for their strategic marriages that expanded their influence. The house is also linked to notable figures, including Philip the Good, who was a prominent duke of Burgundy.