The Château de Quéribus (in Occitan Castèl de Queribús) is a ruined castle in the commune of Cucugnan in the Aude département of France. It has been listed as a monument historique by the French Ministry of Culture since 1907. Queribus is one of the "Five Sons of Carcassonne", along with Aguilar, Peyrepertuse, Termes and Puilaurens: five castles strategically placed to defend the French border against the Spanish, until the border was moved in 1659.