The Château de Lourmarin is a converted castle located in the town of Lourmarin which is situated in the Vaucluse département, in the Provence-Alpes-Côte d’Azur region of France. Originally a 12th-century fortress, it was transformed in the 15th century by Foulques d'Agoult, chamberlain of King Rene I. of Anjou.