Vaison Cathedral, dedicated to Our Lady of Nazareth (French: Cathédrale Notre-Dame de Nazareth de Vaison), is a Roman Catholic church and one of the two former cathedrals in Vaison-la-Romaine, France. It was formerly the seat of the Bishopric of Vaison, abolished under the Concordat of 1801.

The structure of the cathedral in general is Romanesque, and dates from the 11th century; however, the apse and the apsidal chapels are from the Merovingian period.

The second former cathedral of Vaison is the Cathedral of the Assumption (French: Cathédrale Sainte-Marie-de-l'Assomption), also known as the Cathédrale de la Haute-Ville because of its location on top of the mount inside the city walls. It was built some centuries later than the other cathedral, for greater security in disturbed times.

• L.-H. Labande, La cathédrale de Vaison. Étude historique et archéologique, Bulletin Monumental de la Société française d'archéologie, tome 69, 1905, p. 254 (online version)
• Catholic Encyclopaedia: Diocese of Vaison