Eauze Cathedral (French: Cathédrale Saint-Luperc d'Eauze) is a former Roman Catholic cathedral, and a national monument of France, located in the town of Eauze. It was the seat of the former Diocese of Eauze, which was merged into the Bishopric of Auch, probably in the 9th century. Eauze Cathedral is dedicated to Saint Luperculus, who is said to have been a bishop here in the 3rd century before being martyred.