Castelnau-Montratier is a former commune in the Lot department in south-western France. On 1 January 2017, it was merged into the new commune Castelnau-Montratier-Sainte-Alauzie.
Castelnau-Montratier is a former commune in the Lot department in south-western France. On 1 January 2017, it was merged into the new commune Castelnau-Montratier-Sainte-Alauzie.