The Archdiocese of Bordeaux (–Bazas) is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church in France. The episcopal see is Bordeaux, Aquitaine. It was established under the Concordat of 1802 by combining the ancient Diocese of Bordeaux with the greater part of the suppressed Diocese of Bazas. The Archdiocese of Bordeaux is a metropolitan see, with four suffragan dioceses in its ecclesiastical province: Dioceses of Agen, Aire and Dax, Bayonne, and Périgueux.

The Diocese of Aire and Dax is a Latin Church ecclesiastical territory or diocese of the Catholic Church in France. It comprises the département of Landes, in the région of Gascony in Aquitaine.