The Château de Pieusse is one of the so-called Cathar castles in the French commune of Pieusse, near the town of Limoux in the département of l'Aude. It is a "true" Cathar castle in the sense that the site was never taken by the French crown during the annexation of Roussillon, but the buildings are mostly of more recent date. It is characterised by a keep, massive for the time, whose use was essentially defensive. The castle is listed as a monument historique by the French Ministry of Culture.