| Date | From | To |
|---|
| 3rd Century | | | Diocese of Amiens, France
| Erected |
| 3rd Century | | | Diocese of Ajaccio, France
| Erected |
| 3rd Century | | | Diocese of Angoulême, France
| Erected |
| 3rd Century | | | Diocese of Arezzo, Italy
| Erected |
| 3rd Century | | | Diocese of Assisi, Italy
| Erected |
| 3rd Century | | | Diocese of Asti, Italy
| Erected |
| 3rd Century | | | Diocese of Autun, France
| Erected |
| 3rd Century | | | Diocese of Bologna, Italy
| Erected |
| 3rd Century | | | Archdiocese of Bordeaux, France
| Erected |
| 3rd Century | | | Archdiocese of Bourges, France
| Erected |
| 3rd Century | | | Diocese of Camerino, Italy
| Erected |
| 3rd Century | | | Diocese of Cahors, France
| Erected |
| 3rd Century | | | Diocese of Clermont, France
| Erected |
| 3rd Century | | | Diocese of Córdoba, Spain
| Erected |
| 3rd Century | | | Diocese of Evreux, France
| Erected |
| 3rd Century | | | Diocese of Faenza, Italy
| Erected |
| 3rd Century | | | Diocese of Fermo, Italy
| Erected |
| 3rd Century | | | Suburbicarian See of Frascati, Italy
| Erected |
| 3rd Century | | | Diocese of Genova, Italy
| Erected |
| 3rd Century | | | Diocese of Granada, Spain
| Erected |
| 3rd Century | Diocese of Lyon, France
| Elevated | Archdiocese of Lyon, France
| Elevated |
| 3rd Century | | | Diocese of Meaux, France
| Erected |
| 3rd Century | | | Diocese of Mende, France (or 4th Century)
| Erected |
| 3rd Century | | | Diocese of Metz, France
| Erected |
| 3rd Century | | | Diocese of Chiusi, Italy
| Erected |
| 3rd Century | | | Diocese of Maguelonne, France
| Erected |
| 3rd Century | | | Diocese of Nice, France
| Erected |
| 3rd Century | | | Diocese of Nocera de' Pagani, Italy (or 4th Century)
| Erected |
| 3rd Century | | | Diocese of Orléans, France
| Erected |
| 3rd Century | | | Suburbicarian See of Ostia, Italy
| Erected |
| 3rd Century | | | Diocese of Padova, Italy
| Erected |
| 3rd Century | | | Diocese of Palencia, Spain
| Erected |
| 3rd Century | | | Diocese of Paris, France
| Erected |
| 3rd Century | | | Diocese of Pesaro, Italy
| Erected |
| 3rd Century | | | Diocese of Pistoia, Italy
| Erected |
| 3rd Century | | | Diocese of Poitiers, France
| Erected |
| 3rd Century | | | Diocese of Porec, Croatia
| Erected |
| 3rd Century | | | Diocese of Porto, Italy
| Erected |
| 3rd Century | | | Diocese of Rennes, France
| Erected |
| 3rd Century | | | Diocese of Rimini, Italy
| Erected |
| 3rd Century | | | Diocese of Sevilla, Spain
| Erected |
| 3rd Century | | | Diocese of Sées, France
| Erected |
| 3rd Century | | | Diocese of Soissons, France
| Erected |
| 3rd Century | | | Diocese of Sora, Italy
| Erected |
| 3rd Century | | | Diocese of Salona, Croatia
| Erected |
| 3rd Century | | | Diocese of Toulouse, France
| Erected |
| 3rd Century | | | Diocese of Tours, France
| Erected |
| 3rd Century | | | Diocese of Vercelli, Italy
| Erected |
| 3rd Century | | | Diocese of Verona, Italy
| Erected |
| 3rd Century | | | Diocese of Ancona, Italy
| Erected |
| 3rd Century | | | Diocese of Tuscanella, Italy
| Erected |
| 3rd Century | | | Diocese of Modena, Italy
| Erected |
| 3rd Century | | | Diocese of Manfredonia, Italy
| Erected |
| 3rd Century | | | Archdiocese of Damas (Melkite), Syria
| Erected |
| 3rd Century | | | Cardinal Titular Church of Frascati
| Erected |
| 3rd Century | | | Cardinal Titular Church of Porto
| Erected |
| 3rd Century | | | Diocese of Albi, France
| Erected |
| 3rd Century | | | Diocese of Arles, France
| Erected |
| 3rd Century | | | Diocese of Auxerre, France
| Erected |
| 3rd Century | | | Diocese of Beauvais, France
| Erected |
| 3rd Century | | | Diocese of Chartres, France
| Erected |
| 3rd Century | | | Diocese of Die, France
| Erected |
| 3rd Century | | | Diocese of Langres, France
| Erected |
| 3rd Century | | | Diocese of Le Puy-en-Velay, France
| Erected |
| 3rd Century | | | Diocese of Narbonne, France
| Erected |
| 3rd Century | | | Diocese of Périgueux (Vesuna), France
| Erected |
| 3rd Century | | | Diocese of Reims, France
| Erected |
| 3rd Century | | | Diocese of Saintes, France
| Erected |
| 3rd Century | Diocese of Sens, France
| Elevated |
| 3rd Century | | | Archdiocese of Sens, France
| Elevated |
| 3rd Century | | | Diocese of Vienne, France
| Erected |
