The Château de Lastours is a ruined castle in the commune of Sainte-Croix in the Lot département of France.
It consists of a rectangular corps de logis with large double windows, flanked by two large square towers.
The western tower houses a vaulted room which could have been a chapel.
It has been listed since 1993 as a monument historique by the French Ministry of Culture.
This article about a castle or château in France is a stub.