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 Cathedral in Aix-en-Provence in southern France is a Roman Catholic church and the seat of the Archbishop of Aix-en-Provence and Arles. The cathedral is built on the site of the 1st-century Roman forum of Aix. Built and re-built from the 12th until the 19th century, it includes Romanesque, Gothic and Neo-Gothic elements, as well as Roman columns and parts of the baptistery from a 6th-century Christian church. It is a national monument of France.