Béziers Cathedral (Cathédrale Saint-Nazaire-et-Saint-Celse de Béziers), is a Roman Catholic cathedral in Béziers, France. The structure dates from the thirteenth century and was erected on the site of an earlier building which was destroyed during the sack of Béziers in the Albigensian Crusade.

The cathedral was formerly the seat of the Bishopric of Béziers, which was suppressed by the Concordat of 1801 and merged into the Diocese of Montpellier.