The Château de Montbrun is a castle in the commune of Dournazac in the Haute-Vienne département of France. The castle was built in the 12th and 15th centuries, and was restored in the late 19th.
Montbrun is a fine example of a 15th century castle. In plan rectangular, it is flanked in the corners with round towers and protected by water. Its narrow romanesque keep, 40m (~130 ft) square, close up against one of the towers, gives it a strange appearance.