| Date | From | To |
|---|
| 6th Century | | | Diocese of Augsburg, Germany
| Erected |
| 6th Century | Diocese of Bari, Italy
| Elevated | Archdiocese of Bari (-Canosa), Italy
| Elevated |
| 6th Century | | | Diocese of Arras, France
| Erected |
| 6th Century | | | Diocese of Kerry (o Ardfert) e Aghadoe, Ireland
| Erected |
| 6th Century | | | Diocese of Down, Ireland
| Erected |
| 6th Century | | | Diocese of Ruvo, Italy
| Erected |
| 6th Century | | | Diocese of Killala, Ireland
| Erected |
| 6th Century | | | Diocese of Feltre, Italy
| Erected |
| 6th Century | | | Diocese of Sabiona-Säben, Italy
| Erected |
| 6th Century | | | Diocese of Cambrai, France
| Erected |
| 6th Century | | | Diocese of Chieti, Italy
| Erected |
| 6th Century | | | Diocese of Coimbra, Portugal
| Erected |
| 6th Century | | | Diocese of Crotone, Italy
| Erected |
| 6th Century | | | Diocese of Comacchio, Italy
| Erected |
| 6th Century | | | Diocese of Guarda, Portugal
| Erected |
| 6th Century | | | Diocese of Jesi, Italy
| Erected |
| 6th Century | | | Diocese of Nicastro, Italy
| Erected |
| 6th Century | | | Diocese of Lausanne, Switzerland
| Erected |
| 6th Century | | | Diocese of Nicotera, Italy
| Erected |
| 6th Century | | | Diocese of Gallipoli, Italy
| Erected |
| 6th Century | | | Diocese of Amalfi, Italy
| Erected |
| 6th Century | | | Diocese of Orvieto, Italy
| Erected |
| 6th Century | | | Diocese of Pula, Croatia
| Erected |
| 6th Century | | | Diocese of Santa Rufina, Italy
| Erected |
| 6th Century | | | Diocese of Cervia, Italy
| Erected |
| 6th Century | | | Diocese of Salerno, Italy
| Erected |
| 6th Century | | | Diocese of Salzburg, Austria
| Erected |
| 6th Century | | | Diocese of Segorbe, Spain
| Erected |
| 6th Century | | | Diocese of Segovia, Spain
| Erected |
| 6th Century | | | Diocese of Senigallia, Italy
| Erected |
| 6th Century | | | Diocese of Makarska, Croatia
| Erected |
| 6th Century | | | Diocese of Sulmona, Italy
| Erected |
| 6th Century | | | Diocese of Taranto, Italy
| Erected |
| 6th Century | | | Diocese of Teano, Italy
| Erected |
| 6th Century | | | Diocese of Tournai, Belgium
| Erected |
| 6th Century | | | Diocese of Trani, Italy
| Erected |
| 6th Century | | | Diocese of Trieste, Italy
| Erected |
| 6th Century | | | Diocese of Tui, Spain
| Erected |
| 6th Century | | | Diocese of Urbino, Italy
| Erected |
| 6th Century | | | Diocese of Ceneda, Italy
| Erected |
| 6th Century | | | Territorial Abbey of Montecassino, Italy
| Erected |
| 6th Century | | | Diocese of Alatri, Italy
| Erected |
| 6th Century | | | Diocese of Lescar, France
| Erected |
| 6th Century | | | Diocese of Oloron, France
| Erected |
| 6th Century | | | Diocese of Bagnoregio, Italy
| Erected |
| 6th Century | | | Diocese of Viterbo, Italy
| Erected |
| 6th Century | | | Diocese of Duvno, Bosnia and Herzegovina
| Erected |
| 6th Century | Eparchy of Alep (Melkite), Syria
| Elevated | Archdiocese of Alep (Melkite), Syria
| Elevated |
| 6th Century | | | Order of Saint Benedict
| Founded |
| 6th Century | | | Cardinal Titular Church of Sabina
| Erected |
| 6th Century | | | Diocese of Aleria, France
| Erected |
| 6th Century | | | Diocese of Auch, France
| Erected |
| 6th Century | | | Diocese of Elne, France
| Erected |
| 6th Century | | | Diocese of Saint-Jean-de-Maurienne, France
| Erected |
| 6th Century | | | Diocese of Saint-Pol-de-Léon, France
| Erected |
