The Château de Montfort is a castle in the French commune of Montigny-Montfort in the Côte-d'Or département, part of the Burgundy region. The castle was built in the 18th century. It is well known for St. John's Fire (Feu de Saint-Jean) on St. John's Eve, as part of Medieval Festival of Château Montfort (Fête Médiévale au Château de Montfort), held in the castle every year around June 21–24.