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 , chamberlain of King Rene I. of Anjou. After 1526 the castle belonged to and his wife and the new annex made the building the first Renaissance building in the Provence Region. After the Revolution, and despite having two more owners, the castle slowly descended into ruins.