The Diocese of Ajaccio is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in France. The diocese comprises the whole of the island of Corsica.

The Archdiocese of Marseille is a Latin Church ecclesiastical jurisdiction or archdiocese of the Catholic Church in France. The archepiscopal see is in the city of Marseille, and the diocese comprises the arrondissement of Marseille, a subdivision of the department of Bouches-du-Rhône in the Region of Provence-Alpes-Côte d'Azur.