The Archdiocese of Aix-en-Provence and Arles is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church in France. The archepiscopal see is located in the city of Aix-en-Provence. The diocese comprises the department of Bouches-du-Rhône, in the Region of Provence-Alpes-Côte d'Azur. It is currently a suffragan of the Archdiocese of Marseilles and consequently the archbishop no longer wears the pallium.

Aix-en-Provence, or simply Aix, is a city and commune in southern France, about 30 km (20 mi) north of Marseille. A former capital of Provence, it is the subprefecture of the arrondissement of Aix-en-Provence, in the department of Bouches-du-Rhône, in the region of Provence-Alpes-Côte d'Azur. The population of Aix-en-Provence is approximately 145,000. Its inhabitants are called Aixois or, less commonly, Aquisextains.