| Year | From | To | ||
|---|---|---|---|---|
| 112 | Cardinal Titular Church of San Crisogono | Established | ||
| 112 | Cardinal Titular Church of Santi Filippo e Giacomo | Established | ||
| 112 | Cardinal Titular Church of San Lorenzo in Damaso | Established | ||
| 112 | Cardinal Titular Church of Santa Maria in Trastevere | Established | ||
| 112 | Cardinal Titular Church of San Matteo in Merulana | Established | ||
| 112 | Cardinal Titular Church of Santi Nereo ed Achilleo | Established | ||
| 112 | Cardinal Titular Church of Santa Prassede | Established | ||
| 112 | Cardinal Titular Church of Santa Prisca | Established | ||
| 112 | Cardinal Titular Church of Santa Pudenziana | Established | ||
| 112 | Cardinal Titular Church of Santa Susanna | Established | ||
| 112 | Cardinal Titular Church of Tigridae | Established | ||
| 135 | Diocese of Aelia Capitolina, Palestine | Erected | ||
| 231 | Diocese of Alexandria {Alessandria}, Egypt | Elevated | Patriarchate of Alexandria {Alessandria}, Egypt | Elevated |
| 237 | Diocese of Fondi (Fundi), Italy | Erected | ||
| 259 | Diocese of Lentini, Italy | Erected | ||
| 300 | Diocese of Centocelle (Civitavecchia), Italy | Erected | ||
| 303 | Diocese of Formia, Italy | Erected | ||
| 304 | Cardinal Titular Church of San Marcello | Established | ||
| 314 | Cardinal Titular Church of Santi Silvestro e Martino ai Monti | Established | ||
| 325 | Diocese of Antiochia {Antioch}, Syria | Elevated | Patriarchate of Antiochia {Antioch}, Syria | Elevated |
| 325 | Diocese of Aelia Capitolina, Palestine | Name Changed | Diocese of Jerusalem {Gerusalemme}, Palestine | Name Changed |
| 330 | Diocese of Byzantium, Turkey | Elevated | Archdiocese of Constantinople, Turkey | Elevated |
| 336 | Cardinal Titular Church of San Marco | Established | ||
| 344 | Diocese of Köln, Germany | Territory Lost | Diocese of Tongres (Tongeren), Belgium | Erected |
| 345 | Diocese of Shkodrë (Scutari), Albania | Erected | ||
| 353 | Diocese of Terni, Italy | Erected | ||
| 372 | Diocese of Angers, France | Erected | ||
| 382 | Diocese of Forlimpopoli, Italy | Erected | ||
| 384 | Diocese of Tongres (Tongeren), Belgium | Name Changed | Diocese of Maastricht, Belgium | Name Changed |
| 400 | Diocese of Labico Quintanense, Italy | Erected | ||
| 417 | Diocese of Arles, France | Elevated | Archdiocese of Arles, France | Elevated |
| 421 | Diocese of Oderzo (Opitergium), Italy | Erected | ||
| 423 | Cardinal Titular Church of Santa Sabina ((uncertain)) | Established | ||
| 431 | Diocese of Voghenza, Italy | Erected | ||
| 440 | Diocese of Frigento, Italy (440-461) | Erected | ||
| 445 | Diocese of Armagh, Ireland | Erected | ||
| 445 | Diocese of Narbonne, France | Elevated | Archdiocese of Narbonne, France | Elevated |
| 445 | Diocese of Vienne, France | Elevated | Archdiocese of Vienne, France | Elevated |
| 450 | Diocese of Elphin, Ireland | Erected | ||
| 450 | Diocese of Salpi (Salapia), Italy | Erected | ||
| 450 | Diocese of Cuma (Cumae), Italy | Erected | ||
| 450 | Diocese of Barcelona, Spain | Territory Lost | Diocese of Egara, Spain | Erected |
| 450 | Diocese of Anzio, Italy | Erected | ||
| 451 | Diocese of Vibo Valentia (Vibona), Italy | Erected | ||
| 451 | Patriarchate of Alexandria {Alessandria}, Egypt | Territory Added | ||
| 451 | Archdiocese of Constantinople, Turkey | Elevated | Patriarchate of Constantinople, Turkey | Elevated |
| 451 | Diocese of Jerusalem {Gerusalemme}, Palestine | Elevated | Patriarchate of Jerusalem {Gerusalemme}, Palestine | Elevated |
| 454 | Diocese of Clogher, Ireland | Erected | ||
| 457 | Diocese of Blera, Italy | Erected | ||
| 465 | Diocese of Numana, Italy | Erected | ||
| 465 | Diocese of Luni, Italy | Erected | ||
| 465 | Diocese of Cimiez, France | Territory Added | ||
| 465 | Cardinal Titular Church of Velletri | Erected | ||
| 480 | Diocese of Minturno, Italy | Erected | ||
| 484 | Diocese of Sulcis, Italy | Erected | ||
| 487 | Diocese of Ferento, Italy | Erected | ||
| 490 | Diocese of Ostra, Italy | Erected | ||
| 499 | Diocese of Cerveteri, Italy | Erected | ||
| 499 | Diocese of Rosello, Italy | Erected | ||
| 500 | Diocese of Lipari, Italy ((500-520)) | Erected | ||
| 510 | Diocese of Miseno, Italy | Erected | ||
| 512 | Diocese of Bussento, Italy | Erected | ||
| 512 | Patriarchate of Antiochia {Antioch}, Syria | Territory Added | ||
| 514 | Diocese of Dromore, Ireland | Erected | ||
| 515 | Territorial Abbey of Saint-Maurice, Switzerland | Erected | ||
| 519 | Diocese of Kildare, Ireland | Erected | ||
| 530 | Diocese of Arbe (Rab), Croatia | Erected | ||
| 531 | Diocese of Noyon, France | Erected | ||
| 533 | Diocese of Huesca, Spain | Erected | ||
| 533 | Diocese of Carcassonne, France | Erected | ||
| 546 | Diocese of Petelia, Italy | Name Changed | Diocese of Strongoli, Italy | Name Changed |
| 546 | Diocese of Bangor, Wales, Great Britain | Erected | ||
| 549 | Diocese of Ossory, Ireland | Erected | ||
| 550 | Diocese of Tuam, Ireland | Erected | ||
| 550 | Diocese of Clonfert, Ireland | Erected | ||
| 550 | Diocese of Pedena, Austria | Erected | ||
| 550 | Diocese of Grumento Nova (Grumentum), Italy | Erected | ||
| 552 | Diocese of Meath, Ireland | Erected | ||
| 558 | Diocese of Braga, Portugal | Territory Lost | Diocese of Dume, Portugal | Erected |
| 560 | Diocese of Achonry, Ireland | Erected | ||
| 570 | Diocese of Ross, Ireland | Erected | ||
| 570 | Patriarchate of Grado, Italy | Erected | ||
| 570 | Diocese of Terni, Italy | Suppressed | Diocese of Spoleto, Italy | Territory Added |
| 572 | Diocese of Viseu, Portugal | Erected | ||
| 580 | Diocese of Cloyne, Ireland | Erected | ||
| 580 | Diocese of Bisenzio, Italy | Erected | ||
| 583 | Diocese of Saint Asaph, Wales, Great Britain | Erected | ||
| 589 | Diocese of Sigüenza, Spain | Erected | ||
| 590 | Cardinal Titular Church of San Giorgio in Velabro | Established | ||
| 590 | Diocese of Makarska, Croatia | Territory Lost | Diocese of Duvno, Bosnia and Herzegovina | Erected |
| 590 | Diocese of Worms, Germany | Erected | ||
| 590 | Cardinal Titular Church of Santa Maria in Portico (Octaviae) | Established | ||
| 590 | Diocese of Minturno, Italy | Suppressed | Diocese of Formia, Italy | Territory Added |
| 592 | Diocese of Paestum (Agropolis), Italy | Erected | ||
| 595 | Diocese of Ferento, Italy | Name Changed | Diocese of Bomarzo, Italy | Name Changed |
| 597 | Archdiocese of Canterbury, England, Great Britain | Erected | ||
| 599 | Diocese of Tharros, Italy | Erected | ||
| 600 | Cardinal Titular Church of Santa Croce in Gerusalemme | Established | ||
| 600 | Cardinal Titular Church of Sant’Eustachio | Established | ||
| 600 | Cardinal Titular Church of Santa Maria Nuova | Erected | ||
| 600 | Cardinal Titular Church of Santa Maria in Cosmedin | Established | ||
| 600 | Cardinal Titular Church of Tigridae | Territory Added | ||
| 600 | Diocese of Tauriana, Italy | Erected | ||
| 604 | Archdiocese of Canterbury, England, Great Britain | Territory Lost | Diocese of Rochester, England, Great Britain | Erected |
| 610 | Territorial Abbey of Roscrea (Ros Cré), Ireland | Erected | ||
| 624 | Diocese of Voghenza, Italy | Name Changed | Diocese of Ferrara, Italy | Name Changed |
| 626 | Diocese of Noyon, France
Diocese of Tournai, Belgium | United | Diocese of Tournai and Noyon, Belgium | United |
| 628 | Diocese of York, England, Great Britain | Territory Lost | Diocese of Lindsey, England, Great Britain | Erected |
| 630 | Cardinal Titular Church of Sant’Adriano al Foro | Established | ||
| 630 | Diocese of Dunwich (East Anglia), England, Great Britain | Erected | ||
| 633 | Diocese of Dublin, Ireland | Erected | ||
| 634 | Diocese of Lindisfarne, England, Great Britain | Erected | ||
| 638 | Diocese of Oderzo (Opitergium), Italy | Name Changed | Diocese of Eraclea (Citta nova), Italy | Name Changed |
| 640 | Diocese of Torcello (Turris), Italy | Erected | ||
| 647 | Archdiocese of Salona, Croatia | Name Changed | Archdiocese of Split (Spalato), Croatia | Name Changed |
| 656 | Diocese of York, England, Great Britain | Territory Lost | Diocese of Mercia, England, Great Britain | Erected |
| 659 | Diocese of Lismore, Ireland | Erected | ||
| 669 | Diocese of Mercia, England, Great Britain | Name Changed | Diocese of Lichfield, England, Great Britain | Name Changed |
| 673 | Diocese of Dunwich (East Anglia), England, Great Britain | Territory Lost | Diocese of Elmham, England, Great Britain | Erected |
| 676 | Diocese of Hereford, England, Great Britain | Erected | ||
| 678 | Diocese of Lindine, England, Great Britain | Erected | ||
| 678 | Cardinal Titular Church of Santa Maria in Aquiro | Established | ||
| 678 | Diocese of York, England, Great Britain | Territory Lost | Diocese of Hexham, England, Great Britain | Erected |
| 680 | Diocese of Worcester, England, Great Britain | Erected | ||
| 680 | Diocese of Bisenzio, Italy | Name Changed | Diocese of Castro [del Lazio], Italy | Name Changed |
| 695 | Diocese of Utrecht, Netherlands | Erected | ||
| 705 | Diocese of Sherborne, England, Great Britain | Erected | ||
| 711 | Diocese of Tude (Tuy), Spain | Territory Added | ||
| 711 | Diocese of Ávila, Spain | Territory Added | ||
| 713 | Diocese of Barcelona, Spain | Territory Added | ||
| 713 | Diocese of Huesca, Spain | Territory Added | ||
| 716 | Diocese of Roda, Spain | Erected | ||
| 720 | Diocese of Maastricht, Belgium | Name Changed | Diocese of Ličge, Belgium | Name Changed |
| 731 | Cardinal Titular Church of San Nicola in Carcere | Established | ||
| 735 | Diocese of York, England, Great Britain | Elevated | Archdiocese of York, England, Great Britain | Elevated |
| 737 | Diocese of Passau, Germany | Erected | ||
| 739 | Diocese of Freising, Germany | Erected | ||
| 739 | Diocese of Regensburg, Germany | Erected | ||
| 740 | Diocese of Basel, Switzerland | Erected | ||
| 741 | Diocese of Würzburg, Germany | Erected | ||
| 741 | Diocese of Augsburg, Germany | Territory Lost | Diocese of Neuburg, Germany | Erected |
| 741 | Diocese of Erfurt, Germany | Erected | ||
| 742 | Diocese of Padova {Padua}, Italy | Territory Lost | Diocese of Malamocco, Italy | Erected |
| 745 | Diocese of Eichstätt, Germany | Erected | ||
| 747 | Diocese of Astorga, Spain | Erected | ||
| 747 | Diocese of Mainz, Germany | Elevated | Archdiocese of Mainz, Germany | Elevated |
| 752 | Territorial Abbey of Nonantola, Italy | Erected | ||
| 752 | Diocese of Erfurt, Germany | Territory Added | ||
| 772 | Diocese of Osnabrück, Germany | Erected | ||
| 774 | Diocese of Olivolo or Rialto, Italy | Erected | ||
| 775 | Territorial Abbey of Farfa, Italy | Erected | ||
| 777 | Diocese of Llandaff, Wales, Great Britain | Erected | ||
| 780 | Cardinal Titular Church of Santi Cosma e Damiano | Established | ||
| 790 | Diocese of Lentini, Italy | Territory Added | ||
| 794 | Diocese of Embrun, France | Elevated | Archdiocese of Embrun, France | Elevated |
| 794 | Diocese of Tarentaise (Moűtiers-en-Tarentaise), France | Elevated | Archdiocese of Tarentaise (Moűtiers-en-Tarentaise), France | Elevated |
| 794 | Diocese of Saint-Jean-de-Maurienne, France (from Vienne to Tarentaise) | Metropolitan Changed | ||
| 798 | Diocese of Menorca, Spain | Territory Added | ||
| 799 | Diocese of Verden, Germany | Erected | ||
| 799 | Diocese of Paderborn, Germany | Erected | ||
| 800 | Diocese of Hildesheim, Germany | Erected | ||
| 800 | Diocese of Münster, Germany | Erected | ||
| 800 | Diocese of Castroleopoli (Leopoli) e Traetto, Italy | Erected | ||
| 800 | Diocese of Iria Flavia (Iria, Locus Sancti Iacobi), Spain | Restored | ||
| 800 | Cardinal Titular Church of Sant’Agata de’ Goti | Established | ||
| 801 | Diocese of Neuburg, Germany | Suppressed | Diocese of Augsburg, Germany | Territory Added |
| 804 | Diocese of Mantova, Italy | Erected | ||
| 810 | Diocese of Konstanz {Constance}, Germany (was Immediately Subject to Holy See) | Metropolitan Changed | ||
| 811 | Diocese of Oviedo, Spain | Erected | ||
| 811 | Diocese of Malamocco, Italy | Suppressed | Diocese of Olivolo or Rialto, Italy | Territory Added |
| 812 | Diocese of Minden, Germany | Erected | ||
| 824 | Diocese of Acci (Accia), France | Erected | ||
| 831 | Archdiocese of Hamburg, Germany | Erected | ||
| 848 | Diocese of Dol, France | Erected | ||
| 848 | Diocese of Tréguier, France | Erected | ||
| 850 | Diocese of Nona (Nin), Croatia (Year uncertain) | Erected | ||
| 850 | Diocese of Barcelona, Spain | Restored | ||
| 867 | Diocese of Formia-Gaeta (Caieta), Italy | Name Changed | Diocese of Gaeta, Italy | Name Changed |
| 870 | Diocese of Dunwich (East Anglia), England, Great Britain | Suppressed | Diocese of Elmham, England, Great Britain | Territory Added |
| 873 | Archdiocese of Moravia (Pannonia), Croatia | Erected | ||
| 879 | Diocese of Auch, France | Elevated | Archdiocese of Auch, France | Elevated |
| 879 | Archdiocese of Eauze, France | Territory Added | ||
| 883 | Diocese of Lindisfarne, England, Great Britain | Name Changed | Diocese of Chester-le-Street, England, Great Britain | Name Changed |
| 885 | Diocese of Sirmio (Srijem; Sirmium), Croatia | Territory Added | ||
| 886 | Diocese of Lindine, England, Great Britain | Name Changed | Diocese of Dorchester, England, Great Britain | Name Changed |
| 886 | Diocese of Castro di Puglia, Italy | Erected | ||
| 890 | Diocese of Tuy, Spain | Restored | ||
| 900 | Diocese of Krk (Veglia), Croatia | Erected | ||
| 908 | Diocese of Saint-Jean-de-Maurienne, France (from Tarentaise to Vienne) | Metropolitan Changed | ||
| 909 | Diocese of Ramsbury, England, Great Britain | Erected | ||
| 909 | Diocese of Sherborne, England, Great Britain | Territory Lost | Diocese of Crediton, England, Great Britain
Diocese of Wells, England, Great Britain | Erected |
| 931 | Diocese of Crediton, England, Great Britain | Territory Lost | Diocese of Cornwall, England, Great Britain | Erected |
| 934 | Territorial Abbey of Maria Einsiedeln, Switzerland | Erected | ||
| 948 | Diocese of Schleswig, Germany | Erected | ||
| 948 | Diocese of Aarhus (Århus), Denmark | Erected | ||
| 948 | Diocese of Ribe, Denmark | Erected | ||
| 964 | Diocese of Trevico, Italy | Erected | ||
| 968 | Diocese of Poznań, Poland | Erected | ||
| 968 | Diocese of Tursi, Italy | Erected | ||
| 969 | Diocese of Asolo (Cittanova; Eraclea), Italy | Suppressed | Diocese of Treviso, Italy | Territory Added |
| 972 | Diocese of Oldenburg, Germany | Erected | ||
| 973 | Diocese of Regensburg, Germany | Territory Lost | Diocese of Praha, Czechia | Erected |
| 984 | Diocese of Lettere (Litterae), Italy | Erected | ||
| 987 | Diocese of Amalfi, Italy | Territory Lost | Diocese of Capri, Italy
Diocese of Minori, Italy Diocese of Scala, Italy | Erected |
| 987 | Diocese of Amalfi, Italy | Elevated | Archdiocese of Amalfi, Italy | Elevated |
| 988 | Diocese of Odense, Denmark | Erected | ||
| 988 | Diocese of Besalú, Spain | Erected | ||
| 990 | Diocese of Civita Castellana, Italy | Erected | ||
| 990 | Diocese of Dubrovnik (Ragusa), Croatia | Erected | ||
| 991 | Diocese of Roskilde (Roeskilde), Denmark | Erected | ||
| 992 | Archdiocese of Hamburg, Germany | Territory Lost | Diocese of Mecklenburg, Germany | Erected |
| 993 | Diocese of Vieste, Italy | Erected | ||
| 995 | Diocese of Chester-le-Street, England, Great Britain | Name Changed | Diocese of Durham, England, Great Britain | Name Changed |
| 996 | Diocese of Włocławek (Kujawy, Kalisze), Poland | Erected | ||
| 997 | Territorial Abbey of Pannonhalma, Hungary | Erected | ||
| 1000 | Diocese of Poznań, Poland | Territory Lost | Archdiocese of Gniezno, Poland
Diocese of Kraków, Poland Diocese of Kołobrzeg, Poland | Erected |
| 1000 | Archdiocese of Kalocsa, Hungary | Erected | ||
| 1000 | Diocese of Castroleopoli (Leopoli) e Traetto, Italy | Territory Added | ||
| 1000 | Diocese of Meißen (Meissen), Germany
Diocese of Praha, Czechia | Territory Lost | Diocese of Wrocław (Breslau), Poland | Erected |
| 1007 | Diocese of Gualdo Tadino, Italy | Suppressed | Diocese of Nocera Umbra, Italy | Territory Added |
| 1009 | Diocese of Pécs, Hungary | Erected | ||
| 1009 | Diocese of Veszprém, Hungary | Erected | ||
| 1009 | Diocese of Transilvania, Erdély, Siebenbürgen, Romania | Erected | ||
| 1014 | Diocese of Skara, Sweden | Erected | ||
| 1014 | Diocese of Tuy, Spain | Territory Added | ||
| 1015 | Diocese of Kołobrzeg, Poland | Territory Lost | Diocese of Kruszwica, Poland | Erected |
| 1019 | Diocese of Eca, Italy | Name Changed | Diocese of Troia, Italy | Name Changed |
| 1023 | Diocese of Mottola (Motula), Italy | Erected | ||
| 1024 | Diocese of Massa Lubrense, Italy | Erected | ||
| 1025 | Camaldolese Hermits of Mount Corona | Founded | ||
| 1029 | Diocese of Zeitz, Germany | Name Changed | Diocese of Naumburg, Germany | Name Changed |
| 1029 | Diocese of Cerveteri, Italy | Suppressed | Diocese of Porto, Italy | Territory Added |
| 1030 | Diocese of Umbriatico (Umbriaticum), Italy | Erected | ||
| 1030 | Diocese of Nidaros (Trondheim), Norway ((or 1031)) | Erected | ||
| 1030 | Diocese of Canne, Italy | Erected | ||
| 1030 | Diocese of Malvito, Italy | Erected | ||
| 1034 | Diocese of Bar, Montenegro | Elevated | Archdiocese of Bar (Antivari), Montenegro | Elevated |
| 1035 | Diocese of Csanád, Hungary | Erected | ||
| 1040 | Diocese of Cornwall, England, Great Britain | Suppressed | Diocese of Crediton, England, Great Britain | Territory Added |
| 1042 | Diocese of Oulx, Italy | Erected | ||
| 1048 | Diocese of Roskilde (Roeskilde), Denmark | Territory Lost | Diocese of Dalby, Sweden
Diocese of Lund, Sweden | Erected |
| 1049 | Diocese of Monteverde, Italy | Erected | ||
| 1050 | Diocese of Crediton, England, Great Britain | Name Changed | Diocese of Exeter, England, Great Britain | Name Changed |
| 1050 | Diocese of Knin (Tinin), Croatia | Erected | ||
| 1052 | Diocese of Nájera y Valpuesta, Spain | United | ||
| 1053 | Diocese of Atella, Italy
Diocese of Cuma (Cumae), Italy Diocese of Literno, Italy Diocese of Miseno, Italy | Territory Lost | Diocese of Aversa, Italy | Erected |
| 1054 | Archdiocese of Zadar (Zara), Croatia | Elevated | ||
| 1056 | Diocese of Skálholt, Iceland | Erected | ||
| 1057 | Diocese of Lecce, Italy | Erected | ||
| 1058 | Diocese of Ramsbury, England, Great Britain
Diocese of Sherborne, England, Great Britain | Territory Added | ||
| 1058 | Diocese of Biccari | Erected | ||
| 1059 | Diocese of Montecorvino, Italy | Erected | ||
| 1059 | Diocese of Vulturara, Italy | Erected | ||
| 1059 | Diocese of Montemarano, Italy | Erected | ||
| 1059 | Diocese of Guardialfiera (Guardia), Italy | Erected | ||
| 1059 | Diocese of Tortiboli, Italy | Erected | ||
| 1059 | Diocese of Fiorentino, Italy | Erected | ||
| 1060 | Diocese of Viborg, Denmark | Erected | ||
| 1060 | Diocese of Vestervig (Břrglum), Denmark | Erected | ||
| 1060 | Diocese of Gabii, Italy | Suppressed | Suburbicarian See of Palestrina, Italy | Territory Added |
| 1060 | Diocese of Sigtuna, Sweden | Erected | ||
| 1060 | Diocese of Dalby, Sweden
Diocese of Schonen (Scania), Sweden | Suppressed | Diocese of Lund, Sweden | Territory Added |
| 1061 | Diocese of Messina, Italy | Territory Lost | Diocese of Troina, Italy | Erected |
| 1062 | Diocese of Sapë, Albania | Erected | ||
| 1062 | Diocese of Ratzeburg, Germany | Erected | ||
| 1062 | Diocese of Castro [di Sardegna], Italy | Erected | ||
| 1063 | Diocese of Jaca, Spain | Erected | ||
| 1063 | Diocese of Praha, Czechia | Territory Lost | Diocese of Olomouc (Olmütz), Czechia | Erected |
| 1063 | Diocese of Mortlach, Scotland, Great Britain | Erected | ||
| 1063 | Diocese of Huesca, Spain ((named Jaca until 1096)) | Restored | ||
| 1065 | Diocese of Ottana, Italy | Erected | ||
| 1065 | Diocese of Nájera y Valpuesta, Spain | Split | Diocese of Nájera, Spain
Diocese of Valpuesta, Spain | Split |
| 1067 | Diocese of Biccari | Suppressed | Diocese of Troia, Italy | Territory Added |
| 1068 | Diocese of Sorrento, Italy | Elevated | Archdiocese of Sorrento, Italy | Elevated |
| 1070 | Diocese of Selja, Norway | Erected | ||
| 1070 | Diocese of Oslo, Norway (1070-1095) | Erected | ||
| 1070 | Diocese of Elmham, England, Great Britain | Name Changed | Diocese of Thetford, England, Great Britain | Name Changed |
| 1070 | Diocese of Braga, Portugal | Restored | ||
| 1071 | Diocese of Tuy, Spain | Restored | ||
| 1072 | Diocese of Dorchester, England, Great Britain | Name Changed | Diocese of Lincoln, England, Great Britain | Name Changed |
| 1072 | Diocese of Bremen, Germany
Archdiocese of Hamburg, Germany | United | Archdiocese of Bremen (and Hamburg), Germany | United |
| 1072 | Diocese of Sherborne, England, Great Britain | Name Changed | Diocese of Salisbury, England, Great Britain | Name Changed |
| 1073 | Diocese of Torres, Italy | Elevated | Archdiocese of Torres, Italy | Elevated |
| 1073 | Diocese of Tharros, Italy | Elevated | Archdiocese of Oristano, Italy | Elevated |
| 1074 | Diocese of Siponto, Italy | Elevated | Archdiocese of Manfredonia, Italy | Elevated |
| 1075 | Diocese of Burgos, Spain | Erected | ||
| 1076 | Archdiocese of Bremen (and Hamburg), Germany | Territory Lost | Diocese of Faröe Islands, Denmark | Erected |
| 1077 | Diocese of Oradea Mare {Gran Varadino, Nagyvárad}, Romania | Erected | ||
| 1079 | Diocese of Bussento, Italy | Name Changed | Diocese of Policastro, Italy | Name Changed |
| 1080 | Diocese of Cerenzia, Italy | Erected | ||
| 1080 | Diocese of Selja, Norway (1080-1090) | Name Changed | Diocese of Bjřrgvin (Bergen), Norway (1080-1090) | Name Changed |
| 1080 | Diocese of Malvito, Italy | Territory Added | ||
| 1081 | Diocese of Troina, Italy | Suppressed | Diocese of Messina, Italy | Territory Added |
| 1084 | Carthusian Order | Founded | ||
| 1085 | Diocese of Selsey, England, Great Britain | Name Changed | Diocese of Chichester, England, Great Britain | Name Changed |
| 1086 | Archdiocese of Amalfi, Italy | Territory Lost | Diocese of Ravello, Italy | Erected |
| 1087 | Diocese of Przemyśl, Sambor, et Sanok (Ukrainian), Poland | Erected | ||
| 1087 | Diocese of Carinola (Calina), Italy | Erected | ||
| 1087 | Diocese of Valpuesta, Spain | Suppressed | Diocese of Burgos, Spain | Territory Added |
| 1088 | Diocese of Wells, England, Great Britain | Name Changed | Diocese of Bath, England, Great Britain | Name Changed |
| 1090 | Diocese of Ploaghe, Italy | Erected | ||
| 1091 | Diocese of Olivolo or Rialto, Italy | Name Changed | Diocese of Castello, Italy | Name Changed |
| 1091 | Diocese of Thetford, England, Great Britain | Name Changed | Diocese of Norwich, England, Great Britain | Name Changed |
| 1093 | Diocese of Mazara del Vallo, Italy | Erected | ||
| 1093 | Diocese of Zagreb (Agram), Croatia | Erected | ||
| 1094 | Diocese of Amantea, Italy | Suppressed | Diocese of Cosenza, Italy | Territory Added |
| 1095 | Canons Regular of Saint Anthony (of Vienne) | Founded | ||
| 1096 | Diocese of Waterford, Ireland | Erected | ||
| 1098 | Order of Cistercians of the Strict Observance | Founded | ||
| 1098 | Titular See of Antiochia {Antioch} | Erected | ||
| 1098 | Diocese of Sodor and Man, Scotland, Great Britain | United | ||
| 1099 | Diocese of Martirano (Martoranum), Italy | Erected | ||
| 1099 | Diocese of Blera, Italy
Diocese of Centocelle (Civitavecchia), Italy | Suppressed | Diocese of Toscanella (Tuscania), Italy | Territory Added |
| 1099 | Patriarchate of Antiochia {Antioch}, Syria | Erected | ||
| 1099 | Patriarchate of Jerusalem {Gerusalemme}, Palestine | Territory Added | ||
| 1099 | Diocese of Braga, Portugal | Elevated | Archdiocese of Braga, Portugal (or 1100) | Elevated |
| 1100 | Diocese of Moray, Scotland, Great Britain | Erected | ||
| 1100 | Archdiocese of Edessa (in Osrhoëne), Turkey | Restored | ||
| 1103 | Diocese of Lund, Sweden | Elevated | Archdiocese of Lund, Sweden | Elevated |
| 1104 | Diocese of Aarhus (Århus), Denmark (from Hamburg) | Metropolitan Changed | ||
| 1106 | Diocese of Hólar, Iceland | Erected | ||
| 1109 | Diocese of Ely, England, Great Britain | Erected | ||
| 1109 | Diocese of Saint Andrews, Scotland, Great Britain (1109 to 1144) | Erected | ||
| 1111 | Diocese of Labico Quintanense, Italy | Suppressed | Diocese of Toscanella (Tuscania), Italy | Territory Added |
| 1111 | Diocese of Besalú, Spain | Territory Added | ||
| 1112 | Diocese of Dolia (Doglia), Italy | Erected | ||
| 1114 | Diocese of Mondońedo, Spain | Erected | ||
| 1114 | Diocese of Isola, Italy | Erected | ||
| 1114 | Diocese of Glasgow, Scotland, Great Britain | Erected | ||
| 1114 | Diocese of Dume, Portugal | Territory Added | ||
| 1119 | Diocese of Porto, Italy
Diocese of Santa Rufina, Italy | United | Suburbicarian See of Porto e Santa Rufina, Italy | United |
| 1119 | Cardinal Titular Church of Porto
Diocese of Selva Candida (or Santa Rufina), Italy | United | Cardinal Titular Church of Porto e Santa Rufina | United |
| 1119 | Diocese of Santa Giusta (Othoca), Italy | Erected | ||
| 1120 | Diocese of Dubrovnik (Ragusa), Croatia | Elevated | Archdiocese of Dubrovnik (Ragusa), Croatia | Elevated |
| 1120 | Order of the Canons Regular of Premontre; Norbertines | Founded | ||
| 1121 | Diocese of Squillace, Italy | Territory Lost | Diocese of Catanzaro, Italy | Erected |
| 1121 | Diocese of Lichfield, England, Great Britain | Name Changed | Diocese of Coventry and Lichfield, England, Great Britain | Name Changed |
| 1122 | Diocese of Belcastro, Italy | Erected | ||
| 1123 | Diocese of Garðar, Greenland | Erected | ||
| 1123 | Archdiocese of Bremen (and Hamburg), Germany | Territory Lost | Diocese of Uppsala, Sweden | Erected |
| 1125 | Diocese of Bjřrgvin (Bergen), Norway | Territory Lost | Diocese of Stavanger, Norway | Erected |
| 1125 | Diocese of Aberdeen, Scotland, Great Britain | Erected | ||
| 1126 | Order of the Canons Regular of Premontre; Norbertines | Approbation | ||
| 1128 | Swiss Congregation of Canons Regular of Saint Maurice of Agaune | Founded | ||
| 1128 | Diocese of Whithorn-Galloway, Scotland, Great Britain | Erected | ||
| 1128 | Diocese of Kruszwica, Poland | Territory Added | ||
| 1129 | Diocese of Strängnäs (Strengnäs), Sweden | Erected | ||
| 1130 | Diocese of Leighlin, Ireland | Erected | ||
| 1130 | Diocese of Vestervig (Břrglum), Denmark | Name Changed | Diocese of Börglum (Aalborg), Denmark | Name Changed |
| 1131 | Archdiocese of Messina, Italy | Territory Lost | Diocese of Cefalů, Italy | Erected |
| 1131 | Order of the Holy Cross | Founded | ||
| 1131 | Diocese of Patti e Lipari, Italy | Erected | ||
| 1132 | Diocese of Kilmacduagh, Ireland | Erected | ||
| 1132 | Diocese of Kilfenora, Ireland | Erected | ||
| 1134 | Diocese of Lebus, Germany | Erected | ||
| 1134 | Diocese of Sigtuna, Sweden | Suppressed | Diocese of Uppsala, Sweden
Diocese of Västerĺs (Westeraes), Sweden | Territory Added |
| 1135 | Archdiocese of Kalocsa, Hungary (became a Metropolitan) | Elevated | ||
| 1135 | Order of the Holy Cross | Approbation | ||
| 1135 | Diocese of Bath, England, Great Britain | Name Changed | Diocese of Bath and Wells, England, Great Britain | Name Changed |
| 1137 | Diocese of Orkney (Kirkwall), Scotland, Great Britain | Erected | ||
| 1140 | Territorial Abbey of Santi Vincenzo ed Anastasio alle tre Fontane, Italy | Erected | ||
| 1140 | Archdiocese of Gniezno, Poland
Archdiocese of Magdeburg, Germany | Territory Lost | Diocese of Wollin, Germany | Erected |
| 1140 | Order of the Humiliati | Founded | ||
| 1142 | Diocese of Coria, Spain | Erected | ||
| 1145 | Archdiocese of Edessa (in Osrhoëne), Turkey | Territory Added | ||
| 1146 | Diocese of Tournai and Noyon, Belgium | Split | Diocese of Noyon, France
Diocese of Tournai {Doornik}, Belgium | Split |
| 1146 | Diocese of Aleth, France | Name Changed | Diocese of Saint-Malo, France | Name Changed |
| 1150 | Diocese of Tuam, Ireland | Elevated | Archdiocese of Tuam, Ireland | Elevated |
| 1150 | Diocese of Cosenza, Italy | Elevated | Archdiocese of Cosenza, Italy | Elevated |
| 1150 | Suburbicarian See of Ostia, Italy
Diocese of Velletri, Italy | United | Suburbicarian See of Ostia (-Velletri), Italy | United |
| 1150 | Cardinal Titular Church of Ostia
Cardinal Titular Church of Velletri | United | Cardinal Titular Church of Ostia (e Velletri) | United |
| 1150 | Diocese of Ilurir (Eliberi, Elvira, Granada), Spain | Territory Added | ||
| 1150 | Diocese of Krbava (Corbavia), Croatia | Erected | ||
| 1152 | Diocese of Dublin, Ireland | Elevated | Archdiocese of Dublin, Ireland | Elevated |
| 1152 | Diocese of Cashel, Ireland | Elevated | Archdiocese of Cashel, Ireland | Elevated |
| 1152 | Diocese of Armagh, Ireland | Elevated | Archdiocese of Armagh, Ireland | Elevated |
| 1152 | Diocese of Limosano, Italy | Territory Added | ||
| 1153 | Diocese of Oslo, Norway | Territory Lost | Diocese of Hamar, Norway | Erected |
| 1153 | Diocese of Nidaros (Trondheim), Norway | Elevated | Archdiocese of Nidaros (Trondheim), Norway | Elevated |
| 1153 | Diocese of Brechin, Scotland, Great Britain | Erected | ||
| 1158 | Diocese of Derry, Ireland | Erected | ||
| 1160 | Diocese of Oldenburg, Germany | Name Changed | Diocese of Lübeck, Germany | Name Changed |
| 1165 | Diocese of Linköping, Sweden | Territory Lost | Diocese of Växjö (Wexioe), Sweden | Erected |
| 1168 | Diocese of Senj, Croatia | Erected | ||
| 1169 | Diocese of Lettere (Litterae), Italy | Name Changed | Diocese of Lettere (-Gragnano), Italy | Name Changed |
| 1172 | Diocese of Albarracin, Spain | Erected | ||
| 1175 | Diocese of Acqui, Italy | Territory Lost | Diocese of Alessandria (della Paglia), Italy | Erected |
| 1176 | Diocese of Monreale, Italy | Erected | ||
| 1178 | Diocese of Forcona, Italy | Erected | ||
| 1179 | Diocese of San Marco (Argentano), Italy | Erected | ||
| 1179 | Diocese of Ischia, Italy | Erected | ||
| 1179 | Diocese of Paestum (Agropolis), Italy | Territory Lost | Diocese of Capaccio, Italy | Erected |
| 1183 | Diocese of Dunkeld, Scotland, Great Britain | Territory Lost | Diocese of Argyll (Lismore), Scotland, Great Britain | Erected |
| 1185 | Diocese of Üxküll (Uxhall, Ikšķile), Latvia | Erected | ||
| 1189 | Diocese of Plasencia, Spain (Monfragüe, Trujillo, Santa Cruz, and Medellín) | Erected | ||
| 1190 | Order of the Teutonic Knights of Saint Marys Hospital in Jerusalem | Founded | ||
| 1192 | Diocese of Toscanella (Tuscania), Italy | United | Diocese of Viterbo e Tuscania, Italy | United |
| 1195 | Diocese of Roscrea (Ros Cré), Ireland | Suppressed | Diocese of Killaloe, Ireland | Territory Added |
| 1196 | Diocese of Famagusta, Cyprus | Erected | ||
| 1196 | Archdiocese of Nicosia, Cyprus | Erected | ||
| 1196 | Diocese of Paphos, Cyprus | Erected | ||
| 1197 | Diocese of Belluno, Italy
Diocese of Feltre, Italy | United | Diocese of Belluno e Feltre, Italy | United |
| 1198 | Order of the Most Holy Trinity | Founded | ||
| 1202 | Diocese of Üxküll (Uxhall, Ikšķile), Latvia | Name Changed | Diocese of Riga, Latvia | Name Changed |
| 1204 | Diocese of Santorini {Thira}, Greece | Erected | ||
| 1205 | Archdiocese of Athenai {Athens}, Greece | Erected | ||
| 1205 | Patriarchate of Constantinople, Turkey | Erected | ||
| 1206 | Territorial Prelature of Santa Lucia del Mela, Italy | Erected | ||
| 1207 | Diocese of Milos (Melos), Greece | Erected | ||
| 1208 | Diocese of Cardica, Greece | Erected | ||
| 1209 | Order of Friars Minor | Founded | ||
| 1211 | Diocese of Leal (Lihula), Estonia | Erected | ||
| 1212 | Diocese of Zante, Greece | Erected | ||
| 1212 | Diocese of Arkadi, Greece | Erected | ||
| 1212 | Diocese of Mylopotamos, Greece | Erected | ||
| 1212 | Diocese of Rethymo (Calamona), Greece | Erected | ||
| 1212 | Diocese of Chiron, Greece | Erected | ||
| 1213 | Archdiocese of Candia {Crete}, Greece | Erected | ||
| 1215 | Order of Saint Paul the First Hermit | Founded | ||
| 1216 | Order of Friars Preachers | Approbation | ||
| 1217 | Diocese of Semgallen (Semigallen, Selburg), Latvia | Erected | ||
| 1217 | Diocese of Spoleto, Italy | Territory Lost | Diocese of Terni, Italy | Restored |
| 1218 | Order of Our Lady of Mercy | Founded | ||
| 1219 | Diocese of Curland, Latvia | Erected | ||
| 1219 | Diocese of Reval (Rewel), Estonia | Erected | ||
| 1221 | Third Order Regular of St. Francis of Penance | Founded | ||
| 1223 | Order of Friars Minor | Approbation | ||
| 1224 | Diocese of Leal (Lihula), Estonia | Name Changed | Diocese of Dorpat (Tartu), Estonia | Name Changed |
| 1226 | Diocese of Fez, Morocco | Erected | ||
| 1227 | Diocese of Milkó (Milkow), Hungary | Erected | ||
| 1228 | Diocese of Ösell (Oesell) [Saare-Lääne], Estonia | Erected | ||
| 1231 | Diocese of Sirmio (Srijem; Sirmium), Croatia | Restored | ||
| 1234 | Diocese of Marrakesh, Morocco | Erected | ||
| 1235 | Order of Our Lady of Mercy | Approbation | ||
| 1237 | Knights of the Cross with the Red Star | Approbation | ||
| 1237 | Knights of the Cross with the Red Star | Founded | ||
| 1239 | Diocese of Savona, Italy | Territory Lost | Diocese of Noli, Italy | Erected |
| 1243 | Diocese of Chelmno (Culma, Kulm), Poland | Erected | ||
| 1244 | Order of Hermits of St. Augustine | Founded | ||
| 1248 | Territorial Prelature of Altamura, Italy | Erected | ||
| 1248 | Canons Regular of the Order of the Holy Cross | Approbation | ||
| 1251 | Diocese of Atri, Italy | Erected | ||
| 1252 | Diocese of Riga, Latvia | Elevated | Archdiocese of Riga, Latvia | Elevated |
| 1253 | Diocese of Silves (Sylves), Portugal | Erected | ||
| 1254 | Diocese of Lesina, Italy | Erected | ||
| 1254 | Benedictine Congregation of the Celestines | Established | ||
| 1255 | Diocese of Badajoz, Spain | Erected | ||
| 1257 | Diocese of Amiterno, Italy | Suppressed | Diocese of L’Aquila, Italy | Territory Added |
| 1268 | Patriarchate of Antiochia {Antioch}, Syria | Territory Added | ||
| 1276 | Diocese of Åbo, Finland | Erected | ||
| 1286 | Patriarchate of Constantinople, Turkey | Territory Added | ||
| 1300 | Diocese of Korčula (Curzola, Cursola), Croatia
Diocese of Stagno (Ston), Croatia | United | Diocese of Stagno (Ston) et Curzola (Korcula), Croatia | United |
| 1303 | Diocese of Canne, Italy | Suppressed | Diocese of Barletta, Italy | Territory Added |
| 1307 | Archdiocese of Cambaluc (Peking, Khanbaliq), China | Erected | ||
| 1308 | Order of Saint Paul the First Hermit | Approbation | ||
| 1309 | Diocese of Rieti, Italy | Territory Lost | Diocese of Cittŕ Ducale, Italy | Erected |
| 1310 | Archdiocese of Corfů, Greece | Erected | ||
| 1310 | Diocese of Tursi, Italy | Suppressed | Diocese of Anglona, Italy | Territory Added |
| 1313 | Archdiocese of Cambaluc (Peking, Khanbaliq), China | Territory Lost | Diocese of Zaitun (Zeiton; Zaitoun), China | Erected |
| 1318 | Diocese of Caffa, Italy | Erected | ||
| 1321 | Diocese of Zytomir o Zytomierz, Ukraine | Erected | ||
| 1321 | Diocese of Kyiv (Kijów), Ukraine | Erected | ||
| 1328 | Archdiocese of Colosses {Rhodes}, Greece | Erected | ||
| 1342 | Diocese of Cerenzia, Italy
Diocese of Cariati, Italy | United | Diocese of Cariati e Cerenzia, Italy | United |
| 1346 | Archdiocese of Smirne, Turkey | Erected | ||
| 1351 | Diocese of Telde-Canarias, Spain | Erected | ||
| 1357 | Archdiocese of Cyprus (Maronite) | Erected | ||
| 1358 | Diocese of Vladimir (Wlodzimierz), Ukraine | Erected | ||
| 1360 | Diocese of Forlimpopoli, Italy | Name Changed | Diocese of Bertinoro, Italy | Name Changed |
| 1360 | Apostolic Clerics of Saint Jerome | Founded | ||
| 1361 | Diocese of Mrkan, Bosnia and Herzegovina | Erected | ||
| 1361 | Diocese of Halicz (Galyc), Ukraine | Erected | ||
| 1362 | Diocese of Zaitun (Zeiton; Zaitoun), China | Territory Added | ||
| 1370 | Diocese of Seret, Moldova | Erected | ||
| 1373 | Orden de San Jerónimo | Approbation | ||
| 1373 | Diocese of Kamyanets-Podilskyi (Kamieniec), Ukraine | Erected | ||
| 1375 | Diocese of Chełm, Poland | Erected | ||
| 1381 | Diocese of Ardjisch (Argeș; Argesch), Romania | Erected | ||
| 1382 | Diocese of Turnu Severin, Hungary | Erected | ||
| 1385 | Archdiocese of Cambaluc (Peking, Khanbaliq), China | Territory Added | ||
| 1386 | Diocese of Cefalonia, Greece
Diocese of Zante, Greece | United | Diocese of Cefalonia e Zante, Greece | United |
| 1386 | Canons Regular of Saint Augustine of the Congregation of Windesheim | Founded | ||
| 1387 | Diocese of Sodor and Man, Scotland, Great Britain | Name Changed | Diocese of The Isles (Sodor), Scotland, Great Britain | Name Changed |
| 1389 | Diocese of Cardica, Greece | Territory Added | ||
| 1390 | Diocese of Ardjisch (Argeș; Argesch), Romania | Territory Added | ||
| 1391 | Diocese of Mrkan, Bosnia and Herzegovina
Diocese of Trebinje, Bosnia and Herzegovina | United | Diocese of Trebinje e Mrkan, Bosnia and Herzegovina | United |
| 1391 | Diocese of Fiorentino, Italy | Suppressed | Diocese of Lucera, Italy | Territory Added |
| 1394 | Territorial Abbey of Santissima Trinitŕ di Cava de’ Tirreni, Italy | Erected | ||
| 1399 | Diocese of Patti e Lipari, Italy | Split | Diocese of Lipari, Italy
Diocese of Patti, Italy | Split |
| 1400 | Diocese of Tinos, Greece | Name Changed | Diocese of Tinos and Mykonos, Greece | Name Changed |
| 1404 | Diocese of Lutsk (Łuck), Ukraine | Erected | ||
| 1409 | Diocese of Tortiboli, Italy | Suppressed | Diocese of Lucera, Italy | Territory Added |
| 1417 | Diocese of Vilnius, Lithuania | Territory Lost | Diocese of Žemaičiai (Samogizia o Tels; Żmudź), Lithuania | Erected |
| 1418 | Diocese of Moldovita (Moldawitza, Suczawa), Romania | Erected | ||
| 1425 | Territorial Abbey of San Paolo fuori le Mura, Italy | Erected | ||
| 1425 | Diocese of Vladimir (Wlodzimierz), Ukraine | Suppressed | Diocese of Lutsk (Łuck), Ukraine | Territory Added |
| 1429 | Diocese of Cloyne, Ireland
Diocese of Cork, Ireland | United | Diocese of Cork and Cloyne, Ireland | United |
| 1433 | Diocese of Montecorvino, Italy
Diocese of Vulturara, Italy | United | Diocese of Vulturara e Montecorvino, Italy | United |
| 1435 | Order of the Minims | Founded | ||
| 1437 | Titular See of Granada, Spain | Established | ||
| 1441 | Archdiocese of Torres, Italy | Name Changed | Archdiocese of Sassari, Italy | Name Changed |
| 1441 | Diocese of Telde-Canarias, Spain | Territory Added | ||
| 1447 | Diocese of Sarzana, Italy | Erected | ||
| 1452 | Diocese of Andria, Italy
Diocese of Montepeloso, Italy | United | Diocese of Andria-Montepeloso, Italy | United |
| 1459 | Diocese of Ceuta, Spain
Diocese of Marrakesh, Morocco | Territory Lost | Diocese of Tanger (Tangier), Morocco | Erected |
| 1460 | Diocese of Krbava (Corbavia), Croatia | Name Changed | Diocese of Modruš, Croatia | Name Changed |
| 1460 | Diocese of Rossano, Italy | Elevated | Archdiocese of Rossano, Italy | Elevated |
| 1460 | Diocese of Otočac (Ottochaz), Croatia | Erected | ||
| 1462 | Diocese of Belluno e Feltre, Italy | Split | Diocese of Belluno, Italy
Diocese of Feltre, Italy | Split |
| 1466 | Diocese of Equilio (Jesolo), Italy | Suppressed | Patriarchate of Venezia {Venice}, Italy | Territory Added |
| 1472 | Diocese of Saint Andrews, Scotland, Great Britain | Elevated | Archdiocese of Saint Andrews, Scotland, Great Britain | Elevated |
| 1472 | Diocese of Dunblane, Scotland, Great Britain (from Immediately Subject to Saint Andrews) | Metropolitan Changed | ||
| 1474 | Diocese of Litomyšl, Czechia | Suppressed | Archdiocese of Praha {Prague}, Czechia | Territory Added |
| 1474 | Order of the Minims | Approbation | ||
| 1475 | Diocese of Caffa, Italy | Territory Added | ||
| 1477 | Cardinal Titular Church of San Nicola fra le Immagini | Established | ||
| 1479 | Diocese of Andria-Montepeloso, Italy | Split | Diocese of Andria, Italy
Diocese of Montepeloso, Italy | Split |
| 1483 | Archdiocese of Athenai {Athens}, Greece | Territory Added | ||
| 1485 | Diocese of Rubicón, Spain | Name Changed | Diocese of Islas Canarias {Canary Islands}, Spain | Name Changed |
| 1487 | Diocese of Marrakesh, Morocco | Territory Lost | Diocese of Safim, Morocco | Erected |
| 1492 | Diocese of Almería, Spain | Erected | ||
| 1495 | Diocese of Galtelli, Italy | Suppressed | Archdiocese of Cagliari, Italy | Territory Added |
| 1503 | Diocese of Santa Giusta (Othoca), Italy | Suppressed | Archdiocese of Oristano, Italy | Territory Added |
| 1513 | Diocese of Otočac (Ottochaz), Croatia | Suppressed | Diocese of Senj, Croatia | Territory Added |
| 1514 | Diocese of Sulcis, Italy | Territory Added | ||
| 1515 | Archdiocese of Lyon, France | Territory Lost | Diocese of Bourg-en-Bresse, France | Erected |
| 1517 | Order of Friars Minor | Name Changed | Order of Friars Minor Conventual | Name Changed |
| 1517 | Order of Observant Friars Minor | Founded | ||
| 1519 | Diocese of Puerto Rico (Porto Rico) (Windward Islands of the Lesser Antilles from Santa Cruz to Dominica) | Territory Added | ||
| 1522 | Diocese of Naxos, Greece | Elevated | Archdiocese of Naxos, Greece | Elevated |
| 1522 | Diocese of Åbo, Finland | Territory Added | ||
| 1523 | Camaldolese Hermits of Mount Corona | Approbation | ||
| 1524 | Congregation of Clerics Regular | Founded | ||
| 1525 | Order of Observant Friars Minor | Founded | Order of Friars Minor Capuchin | Founded |
| 1525 | Diocese of Pomesania (Pomezania), Poland | Territory Added | ||
| 1527 | Diocese of Concepción de la Vega, Dominican Republic | Suppressed | Diocese of Santiago de Cuba | Territory Added |
| 1527 | Archeparchy of Damas (Maronite), Syria | Erected | ||
| 1527 | Diocese of Linköping, Sweden | Territory Added | ||
| 1527 | Diocese of Skara, Sweden | Territory Added | ||
| 1527 | Diocese of Strängnäs (Strengnäs), Sweden | Territory Added | ||
| 1527 | Diocese of Växjö (Wexioe), Sweden | Territory Added | ||
| 1527 | Diocese of Västerĺs (Westeraes), Sweden | Territory Added | ||
| 1528 | Diocese of Pienza e Montalcino, Italy | Split | Diocese of Montalcino, Italy
Diocese of Pienza, Italy | Split |
| 1530 | Clerics Regular of St. Paul | Founded | ||
| 1530 | Diocese of Garðar, Greenland | Territory Added | ||
| 1532 | Diocese of Giffoni, Italy | Suppressed | Archdiocese of Salerno, Italy | Territory Added |
| 1534 | Clerks Regular of Somasca | Founded | ||
| 1534 | Diocese of Bourg-en-Bresse, France | Suppressed | Archdiocese of Lyon, France | Territory Added |
| 1536 | Archdiocese of Lund, Sweden | Territory Added | ||
| 1536 | Diocese of Roskilde (Roeskilde), Denmark | Territory Added | ||
| 1536 | Diocese of Aarhus (Århus), Denmark | Territory Added | ||
| 1536 | Diocese of Odense, Denmark | Territory Added | ||
| 1536 | Diocese of Ribe, Denmark | Territory Added | ||
| 1536 | Diocese of Viborg, Denmark | Territory Added | ||
| 1536 | Diocese of Börglum (Aalborg), Denmark | Territory Added | ||
| 1537 | Diocese of Bjřrgvin (Bergen), Norway | Territory Added | ||
| 1537 | Diocese of Hamar, Norway | Territory Added | ||
| 1537 | Archdiocese of Nidaros (Trondheim), Norway | Territory Added | ||
| 1537 | Diocese of Oslo, Norway | Territory Added | ||
| 1537 | Diocese of Stavanger, Norway | Territory Added | ||
| 1537 | Diocese of Faröe Islands, Denmark | Territory Added | ||
| 1537 | Order of the Hospitallers of Saint John of God | Founded | ||
| 1540 | Archdiocese of Riga, Latvia | Territory Added | ||
| 1541 | Diocese of Stagno (Ston) et Curzola (Korcula), Croatia | Split | Diocese of Korčula (Curzola, Cursola), Croatia
Diocese of Stagno (Ston), Croatia | Split |
| 1542 | Diocese of Skálholt, Iceland | Territory Added | ||
| 1542 | Diocese of Bristol, England, Great Britain | Erected | ||
| 1544 | Cardinal Titular Church of Santa Maria in Ara Coeli | Restored | ||
| 1544 | Diocese of Kammin (Camin), Germany | Territory Added | ||
| 1546 | Archdiocese of Colosses {Rhodes}, Greece | Territory Added | ||
| 1547 | Diocese of Dunkeld, Scotland, Great Britain | Territory Added | ||
| 1547 | Diocese of Salpi (Salapia), Italy | Suppressed | Archdiocese of Trani, Italy | Territory Added |
| 1550 | Diocese of Hólar, Iceland | Territory Added | ||
| 1550 | Diocese of Moldovita (Moldawitza, Suczawa), Romania (1550-1600) | Territory Added | ||
| 1551 | Diocese of Schleswig, Germany | Territory Added | ||
| 1551 | Diocese of Ario, Greece | Suppressed | Diocese of Rethymo (Calamona), Greece | Territory Added |
| 1553 | Eparchy of Diarbekir (Amida) (Chaldean), Turkey | Erected | ||
| 1553 | Eparchy of Mardin (Chaldean), Turkey | Erected | ||
| 1553 | Diocese of Seert (Chaldean), Turkey | Erected | ||
| 1555 | Patriarchate of Ethiopia | Erected | ||
| 1558 | Archdiocese of Canterbury, England, Great Britain | Territory Added | ||
| 1558 | Diocese of Dorpat (Tartu), Estonia | Territory Added | ||
| 1558 | Diocese of The Isles (Sodor), Scotland, Great Britain | Territory Added | ||
| 1558 | Diocese of Orkney (Kirkwall), Scotland, Great Britain | Territory Added | ||
| 1558 | Diocese of Whithorn-Galloway, Scotland, Great Britain | Territory Added | ||
| 1558 | Archdiocese of Uppsala, Sweden | Territory Added | ||
| 1559 | Diocese of Bath and Wells, England, Great Britain | Territory Added | ||
| 1559 | Diocese of Durham, England, Great Britain | Territory Added | ||
| 1559 | Congregation of the Sacred Consulta, Roman Curia | Established | ||
| 1559 | Diocese of Meißen (Meissen), Germany | Territory Lost | Prefecture Apostolic of Lausitz (Lusatia), Germany | Erected |
| 1560 | Archdiocese of Saint Andrews, Scotland, Great Britain | Territory Added | ||
| 1560 | Diocese of Ösell (Oesell) [Saare-Lääne], Estonia | Territory Added | ||
| 1560 | Diocese of Argyll (Lismore), Scotland, Great Britain | Territory Added | ||
| 1561 | Diocese of Reval (Rewel), Estonia | Territory Added | ||
| 1562 | Order of Friars Minor Conventual | Founded | Order of Discalced Friars Minor | Founded |
| 1562 | Diocese of Lesina, Italy | Suppressed | Diocese of Larino, Italy | Territory Added |
| 1566 | Diocese of Marrakesh, Morocco | Territory Added | ||
| 1570 | Archdiocese of Nicosia, Cyprus | Territory Added | ||
| 1570 | Diocese of Paphos, Cyprus | Territory Added | ||
| 1571 | Diocese of Svač, Serbia | Territory Added | ||
| 1571 | Diocese of Famagusta, Cyprus | Territory Added | ||
| 1571 | Congregation of the Index, Roman Curia | Established | ||
| 1575 | Confederation of Oratorians of St. Philip Neri | Founded | ||
| 1575 | Archdiocese of Smirne, Turkey | Territory Added | ||
| 1577 | Archeparchy of Beirut {Bairut} (Maronite), Lebanon | Erected | ||
| 1577 | Diocese of Aberdeen, Scotland, Great Britain | Territory Added | ||
| 1579 | Archdiocese of York, England, Great Britain | Territory Added | ||
| 1580 | Archdiocese of Utrecht, Netherlands | Territory Added | ||
| 1580 | Diocese of Groningen, Netherlands | Territory Added | ||
| 1581 | Diocese of Meißen (Meissen), Germany | Extinct | Prefecture Apostolic of Lausitz (Lusatia), Germany | Territory Added |
| 1582 | Order of the Ministers of the Sick | Founded | ||
| 1584 | Diocese of Lincoln, England, Great Britain | Territory Added | ||
| 1586 | Order of the Ministers of the Sick | Approbation | ||
| 1587 | Cardinal Titular Church of Santa Barbara | Territory Added | ||
| 1587 | Cardinal Titular Church of San Simeone Profeta | Territory Added | ||
| 1587 | Cardinal Titular Church of Sant’Eufemia | Territory Added | ||
| 1587 | Cardinal Titular Church of San Cesareo in Palatio | Territory Added | ||
| 1587 | Cardinal Titular Church of Santa Lucia in Septisolio | Territory Added | ||
| 1587 | Cardinal Titular Church of Santa Lucia in Orphea | Territory Added | ||
| 1587 | Cardinal Titular Church of Santi Sergio e Bacco | Territory Added | ||
| 1587 | Cardinal Titular Church of San Teodoro | Territory Added | ||
| 1587 | Diocese of Haarlem, Netherlands | Territory Added | ||
| 1588 | Order of Augustinian Recollects | Founded | ||
| 1588 | Diocese of Macau, China | Territory Lost | Diocese of Funay (Funai), Japan | Erected |
| 1591 | Diocese of Deventer, Netherlands | Territory Added | ||
| 1592 | Diocese of Chełm (Ukrainian), Poland | Erected | ||
| 1592 | Vicariate Apostolic of Batavia (Holland Mission), Netherlands | Erected | ||
| 1592 | Congregation of Apostolic Visitation, Roman Curia | Established | ||
| 1596 | Cardinal Titular Church of San Vitale | Territory Added | ||
| 1596 | Diocese of Volodymyr (Włodzimierz) et Brėst (Ukrainian) | Erected | ||
| 1596 | Diocese of Pińsk-Turaŭ (Ukrainian), Belarus | Erected | ||
| 1596 | Archdiocese of Połock (Polotsk) (Ukrainian), Belarus | Erected | ||
| 1598 | Diocese of Brandenburg, Germany | Territory Added | ||
| 1598 | Diocese of Lebus, Germany | Territory Added | ||
| 1599 | Diocese of Cochin, India | Territory Lost | Archdiocese of Angamalé, India | Erected |
| 1600 | Cardinal Titular Church of San Cesareo in Palatio | Established | ||
| 1600 | Congregation of Pious Workers | Founded | ||
| 1601 | Congregation for Consultations of Regulars, Roman Curia | United | Congregation for Consultations of Bishops and Other Prelates, Roman Curia | United |
| 1601 | Diocese of Sardica (Sredek, Sofia), Bulgaria | Restored | ||
| 1603 | Archdiocese of Glasgow, Scotland, Great Britain | Territory Added | ||
| 1603 | Discalced Mercedarians | Founded | ||
| 1604 | Diocese of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia | Elevated | Archdiocese of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia | Elevated |
| 1606 | Congregation of Pious Workers | Approbation | ||
| 1606 | Discalced Mercedarians | Approbation | ||
| 1606 | Diocese of Cochin, India | Territory Lost | Mission "Sui Iuris" of Madura, India | Erected |
| 1610 | Agostiniani Scalzi | Approbation | ||
| 1611 | Diocese of Bacău, Romania | Erected | ||
| 1612 | Confederation of Oratorians of St. Philip Neri | Approbation | ||
| 1614 | Territorial Prelature of Pernambuco, Brazil | Territory Lost | Apostolic Administration of Săo Luís do Maranhăo, Brazil | Erected |
| 1616 | Cardinal Titular Church of San Biagio dell’Anello | Territory Added | ||
| 1617 | Order of the Pious Schools | Founded | ||
| 1617 | Diocese of Samland (Sambia), Poland | Erected | ||
| 1621 | Diocese of Chur, Switzerland | Name Changed | Congregation of Pious Workers ((from Cong. of Christian Doctrine))
Prefecture Apostolic of Rhétie (Rezia, Rhaetia), Switzerland | Erected |
| 1622 | Vicariate Apostolic of England (and Wales), Great Britain | Erected | ||
| 1622 | Archdiocese of Magdeburg, Germany | Territory Added | ||
| 1625 | Archeparchy of Smoleńsk (Ukrainian), Russian Federation | Erected | ||
| 1625 | Vicariate Apostolic of Smirne, Turkey | Erected | ||
| 1626 | Congregation of Ecclesiastical Immunity, Roman Curia | Established | ||
| 1627 | Cardinal Titular Church of San Carlo ai Catinari | Territory Added | ||
| 1628 | Mission "Sui Iuris" of Siria e Cilicia, Syria | Erected | ||
| 1630 | Archeparchy of Lviv (Armenian), Ukraine | Erected | ||
| 1630 | Diocese of Modruš, Croatia
Diocese of Senj, Croatia | United | Diocese of Senj (-Modruš), Croatia | United |
| 1630 | Diocese of Islas Canarias {Canary Islands}, Spain | Territory Lost | Prefecture Apostolic of Tripoli, Libya | Erected |
| 1631 | Diocese of Mayo, Ireland | Suppressed | Archdiocese of Tuam, Ireland | Territory Added |
| 1633 | Archdiocese of Damas (Syrian), Syria | Erected | ||
| 1637 | Archdiocese of Goa, India | Territory Lost | Vicariate Apostolic of Idalcan / Deccan / Bijapur, India | Erected |
| 1637 | Order of Observant Friars Minor | Founded | Order of Friars Minor Recollect | Founded |
| 1638 | Diocese of Kyiv (Kijów), Ukraine | Name Changed | Diocese of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Name Changed |
| 1640 | Diocese of Albania
Diocese of Mostar, Bosnia and Herzegovina | Suppressed | Archdiocese of Durrës (Durazzo), Albania | Territory Added |
| 1640 | Diocese of Angola e Congo | Territory Lost | Prefecture Apostolic of Lower Congo (Portuguese Congo), Angola | Erected |
| 1641 | Diocese of Mylopotamos, Greece | Suppressed | Diocese of Rethymo (Calamona), Greece | Territory Added |
| 1642 | Society of Priests of Saint Sulpice | Founded | ||
| 1642 | Diocese of Săo Tomé of Meliapore, India | Territory Lost | Vicariate Apostolic of Fort Saint George, India | Erected |
| 1642 | Diocese of Sardica (Sredek, Sofia), Bulgaria | Elevated | Archdiocese of Sardica (Sredek, Sofia), Bulgaria | Elevated |
| 1643 | Prefecture Apostolic of Îles de la Terre Ferme, Antilles | Erected | ||
| 1645 | Archdiocese of Alep, Syria | Erected | ||
| 1646 | Diocese of ’s-Hertogenbosch (Bois-le-Duc), Netherlands | Territory Added | ||
| 1648 | Archdiocese of Bremen (and Hamburg), Germany | Territory Added | ||
| 1648 | Diocese of Halberstadt, Germany | Territory Added | ||
| 1648 | Diocese of Lübeck, Germany | Territory Added | ||
| 1648 | Diocese of Minden, Germany | Territory Added | ||
| 1648 | Diocese of Ratzeburg, Germany | Territory Added | ||
| 1648 | Diocese of Schwerin, Germany | Territory Added | ||
| 1648 | Diocese of Verden, Germany | Territory Added | ||
| 1648 | Apostolic Administration of Nicopolis, Romania | Erected | ||
| 1648 | Diocese of Nicopoli, Bulgaria | Erected | ||
| 1650 | Diocese of Diarbekir (Amida) (Armenian), Turkey | Erected | ||
| 1651 | Prefecture Apostolic of French Guiana-Cayenne, Antilles | Erected | ||
| 1653 | Orden de los Hermanos de Belén | Founded | ||
| 1655 | Diocese of Vilnius, Lithuania | Suppressed | Diocese of Curland, Latvia | Territory Added |
| 1656 | Archdiocese of Dardania, North Macedonia | Name Changed | Archdiocese of Skopje, North Macedonia | Name Changed |
| 1656 | Diocese of Naumburg, Germany | Territory Added | ||
| 1657 | Vicariate Apostolic of ’s-Hertogenbosch (Bois-le-Duc), Netherlands | Erected | ||
| 1659 | Diocese of Macau, China | Territory Lost | Vicariate Apostolic of Cochin {Cocincina}, Viet Nam
Vicariate Apostolic of Tonking, Viet Nam | Erected |
| 1659 | Archdiocese of Alep, Syria | Territory Added | ||
| 1660 | La Société des Missions Etrangčres | Founded | ||
| 1662 | Vicariate Apostolic of Siam, Thailand | Erected | ||
| 1662 | Diocese of Merseburg, Germany | Territory Added | ||
| 1663 | Diocese of Duvno, Bosnia and Herzegovina | Suppressed | Diocese of Makarska, Croatia | Territory Added |
| 1669 | Vicariate Apostolic of Calenberg, Göttingen and Grubenhagen, Germany | Name Changed | Vicariate Apostolic of Calenberg, Göttingen, Grubenhagen and Halberstadt, Germany (added territory of Halberstadt and Verden) | Name Changed |
| 1669 | Vicariate Apostolic of Idalcan / Deccan / Bijapur, India | Name Changed | Vicariate Apostolic of Great Mogul (Mughals), India | Name Changed |
| 1670 | Vicariate Apostolic of Calenberg, Göttingen, Grubenhagen and Halberstadt, Germany | Name Changed | Vicariate Apostolic of Nordic Missions, Germany (added Provinces of Bremen and Magdeburg) | Name Changed |
| 1671 | Eparchy of Baalbek (Maronite), Lebanon | Erected | ||
| 1673 | Congregation of Marian Fathers of the Immaculate Conception of the Most Blessed Virgin Mary | Founded | ||
| 1677 | Eparchy of Lviv (Ukrainian), Ukraine | Erected | ||
| 1678 | Diocese of Kildare, Ireland
Diocese of Leighlin, Ireland | United | Diocese of Kildare and Leighlin, Ireland | United |
| 1678 | Archdiocese of Homs (-Hama-Nabk) (Syrian), Syria | Erected | ||
| 1680 | Frčres des Écoles Chrétiennes | Founded | ||
| 1683 | Eparchy of Saďda (Melkite Greek), Lebanon | Erected | ||
| 1683 | Archdiocese of Tyr (Melkite Greek), Lebanon | Erected | ||
| 1684 | Arrouhbaniat Albassiliat Almoukhalissiat (Melkite Greek) | Founded | ||
| 1687 | Archdiocese of Bosra (Melkite Greek), Syria | Erected | ||
| 1687 | Mission "Sui Iuris" of Upper Egypt, Egypt | Erected | ||
| 1687 | Diocese of Valence and Die, France | Split | Diocese of Die, France
Diocese of Valence, France | Split |
| 1697 | Ordre Basilien Alépin (Melkite Greek) | Founded | ||
| 1697 | Basilian Chouerite Order of Saint John the Baptist (Melkite Greek) | Founded | ||
| 1699 | Congregation of Marian Fathers of the Immaculate Conception of the Most Blessed Virgin Mary | Approbation | ||
| 1700 | Antonin Maronite Order (Maronite) | Founded | ||
| 1700 | Diocese of Milos (Melos), Greece | Territory Added | ||
| 1701 | Eparchy of Baalbek (Melkite Greek), Lebanon | Erected | ||
| 1701 | Congregazione Mechitarista di Venezia | Founded | ||
| 1701 | Pontifical Ecclesiastical Academy, Roman Curia | Established | ||
| 1703 | Congregation of the Holy Spirit | Founded | ||
| 1704 | Vicariate Apostolic of Great Mogul (Mughals), India | Territory Lost | Prefecture Apostolic of Tibet, India | Erected |
| 1705 | Missionaries of the Company of Mary | Founded | ||
| 1708 | Archdiocese of Mardin (Armenian), Turkey | Erected | ||
| 1709 | Diocese of Salmas {Shahpour} (Chaldean), Iran | Erected | ||
| 1709 | Vicariate Apostolic of Malabar, India | Name Changed | Vicariate Apostolic of Verapoly, India | Name Changed |
| 1709 | Vicariate Apostolic of Kiam-Si {Kiangsi}, China | Territory Added | ||
| 1710 | Eparchy of Alep (Armenian), Syria | Erected | ||
| 1712 | Diocese of Malacca, Singapore | Territory Lost | Prefecture Apostolic of Islands of the Indian Ocean, Réunion | Erected |
| 1718 | Archdiocese of Cashel, Ireland
Diocese of Emly, Ireland | United | Archdiocese of Cashel (-Emly), Ireland | United |
| 1720 | Congregation of the Passion | Founded | ||
| 1727 | Vicariate Apostolic of Batavia (Holland Mission), Netherlands | Elevated | Mission "Sui Iuris" of Batavia (Holland Mission), Netherlands | Elevated |
| 1732 | Congregation of the Most Holy Redeemer | Founded | ||
| 1732 | Vicariate Apostolic of Upper and Lower Saxony (Hanover, Northern Germany), Germany | Territory Lost | Vicariate Apostolic of Brandenburg and Prussia, Germany | Erected |
| 1737 | Vicariate Apostolic of Kweichow [Guizhou], China | Suppressed | Vicariate Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China | Territory Added |
| 1741 | Congregation of the Passion | Approbation | ||
| 1741 | Diocese of Săo Tomé e Príncipe | Territory Lost | Vicariate Apostolic of Ava e Pegů, Myanmar | Erected |
| 1742 | Diocese of Tanger, Morocco | Erected | ||
| 1743 | Vicariate Apostolic of Nordic Missions, Germany | Territory Lost | Vicariate Apostolic of Saxonia (Saxony), Germany | Erected |
| 1749 | Congregation of the Most Holy Redeemer | Approbation | ||
| 1749 | Institut du Clergé Patriarcal de Bzommar | Founded | ||
| 1750 | Mission "Sui Iuris" of Mossul, Iraq | Erected | ||
| 1752 | Prefecture Apostolic of Curaçao, Netherlands Antilles, Antilles | Erected | ||
| 1752 | Ordine dei Frati penitenti di Gesů Nazareno | Founded | ||
| 1753 | Eparchy of Akka (Melkite Greek), Israel | Erected | ||
| 1758 | Archdiocese of Sardica (Sredek, Sofia), Bulgaria | Name Changed | Vicariate Apostolic of Sofia e Plovdiv, Bulgaria | Name Changed |
| 1762 | Vicariate Apostolic of Chansi and Chensi, China
Vicariate Apostolic of Houkouang, China | United | Vicariate Apostolic of Hukwang, Shansi [Shanxi], and Shensi [Shaanxi], China | United |
| 1763 | Diocese of Québec, Canada | Territory Lost | Prefecture Apostolic of Iles Saint-Pierre et Miquelon ((13 Jun 1818 and 4 Mar 1912)) | Erected |
| 1763 | Diocese of Funchal, Portugal | Territory Lost | Prefecture Apostolic of Sénégal | Erected |
| 1769 | Prefecture Apostolic of Tibet, India | Suppressed | Vicariate Apostolic of Great Mogul (Mughals), India | Territory Added |
| 1773 | Congregazione Mechitarista di Vienna | Founded | ||
| 1773 | Mission "Sui Iuris" of Madura, India | Territory Added | ||
| 1774 | Diocese of Zahleh e Furzol (Melkite Greek), Lebanon | Name Changed | ||
| 1775 | Diocese of Tanger, Morocco | Territory Added | ||
| 1776 | Mission "Sui Iuris" of Karnatic Mission / Pondicherry, India | Erected | ||
| 1776 | Benedictine Congregation of the Celestines | Territory Added | ||
| 1777 | Diocese of Saint-Dié, France | Erected | ||
| 1777 | Canons Regular of Saint Anthony (of Vienne) | Territory Added | ||
| 1778 | Diocese of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Territory Added | ||
| 1778 | Diocese of Zytomir o Zytomierz, Ukraine | Territory Added | ||
| 1778 | Archeparchy of Smoleńsk (Ukrainian), Russian Federation | Territory Added | ||
| 1781 | Vicariate Apostolic of Yunnan, China | Suppressed | Vicariate Apostolic of Se-Ciuen (Setchoan, Szechwan, Sichuan), China | Territory Added |
| 1781 | Vicariate Apostolic of Nordic Missions, Germany | Territory Lost | Prefecture Apostolic of Sweden | Erected |
| 1783 | Apostolic Administration of Mozambico | Elevated | Territorial Prelature of Mozambico | Elevated |
| 1783 | Diocese of Smoleńsk, Poland | Territory Added | ||
| 1785 | Diocese of Amadiyah (Chaldean), Iraq | Erected | ||
| 1787 | Diocese of Pedena, Austria | Territory Lost | Diocese of Gradisca (d’Isonzo), Italy
Diocese of Trieste, Italy | Territory Added |
| 1789 | Archdiocese of Kerkūk (Chaldean), Iraq | Erected | ||
| 1789 | Diocese of Bacău, Romania | Territory Added | ||
| 1790 | Archdiocese of Alep [Beroea, Halab] (Melkite Greek), Syria (became a Metropolitan) | Elevated | ||
| 1790 | Archeparchy of Mossul (Syrian), Iraq | Erected | ||
| 1790 | Diocese of Chełm, Poland
Diocese of Kraków, Poland | Name Changed | Diocese of Chełm and Lublin, Poland | Name Changed |
| 1790 | Vicariate Apostolic of Chekiang {Ce-Kiam}, China
Vicariate Apostolic of Fukien (Kuiceu), China Vicariate Apostolic of Kiam-Si {Kiangsi}, China | United | Vicariate Apostolic of Fukien, Chekiang, and Kiangsi, China | United |
| 1791 | [Constitutional Diocese of Ain, France] | Established | ||
| 1791 | [Constitutional Diocese of Aisne, France] | Established | ||
| 1791 | [Constitutional Diocese of Allier, France] | Established | ||
| 1791 | [Constitutional Diocese of Ardennes, France] | Established | ||
| 1791 | [Constitutional Diocese of Aričge, France] | Established | ||
| 1791 | [Constitutional Diocese of Aube, France] | Established | ||
| 1791 | [Constitutional Diocese of Aude, France] | Established | ||
| 1791 | [Constitutional Diocese of Aveyron, France] | Established | ||
| 1791 | [Constitutional Diocese of Bas-Rhin, France] | Established | ||
| 1791 | [Constitutional Diocese of Basses-Alpes, France] | Established | ||
| 1791 | [Constitutional Diocese of Basses-Pyrénées, France] | Established | ||
| 1791 | [Constitutional Diocese of Bouches-du-Rhône, France] | Established | ||
| 1791 | [Constitutional Diocese of Calvados, France] | Established | ||
| 1791 | [Constitutional Diocese of Cantal, France] | Established | ||
| 1791 | [Constitutional Diocese of Charente, France] | Established | ||
| 1791 | [Constitutional Diocese of Charente-Inférieure, France] | Established | ||
| 1791 | [Constitutional Diocese of Cher, France] | Established | ||
| 1791 | [Constitutional Diocese of Corrčze, France] | Established | ||
| 1791 | [Constitutional Diocese of Corse, France] | Established | ||
| 1791 | [Constitutional Diocese of Côte-d'Or, France] | Established | ||
| 1791 | [Constitutional Diocese of Côtes-du-Nord, France] | Established | ||
| 1791 | [Constitutional Diocese of Creuse, France] | Established | ||
| 1791 | [Constitutional Diocese of Deux-Sčvres, France] | Established | ||
| 1791 | [Constitutional Diocese of Dordogne, France] | Established | ||
| 1791 | [Constitutional Diocese of Doubs, France] | Established | ||
| 1791 | [Constitutional Diocese of Drôme, France] | Established | ||
| 1791 | [Constitutional Diocese of Eure, France] | Established | ||
| 1791 | [Constitutional Diocese of Eure-et-Loir, France] | Established | ||
| 1791 | [Constitutional Diocese of Finistčre, France] | Established | ||
| 1791 | [Constitutional Diocese of Gard, France] | Established | ||
| 1791 | [Constitutional Diocese of Gers, France] | Established | ||
| 1791 | [Constitutional Diocese of Gironde, France] | Established | ||
| 1791 | [Constitutional Diocese of Haute-Garonne, France] | Established | ||
| 1791 | [Constitutional Diocese of Haute-Loire, France] | Established | ||
| 1791 | [Constitutional Diocese of Haute-Marne, France] | Established | ||
| 1791 | [Constitutional Diocese of Hautes-Alpes, France] | Established | ||
| 1791 | [Constitutional Diocese of Haute-Saône, France] | Established | ||
| 1791 | [Constitutional Diocese of Hautes-Pyrénées, France] | Established | ||
| 1791 | [Constitutional Diocese of Haute-Vienne, France] | Established | ||
| 1791 | [Constitutional Diocese of Haut-Rhin, France] | Established | ||
| 1791 | [Constitutional Diocese of Hérault, France] | Established | ||
| 1791 | [Constitutional Diocese of Ille-et-Vilaine, France] | Established | ||
| 1791 | [Constitutional Diocese of Indre, France] | Established | ||
| 1791 | [Constitutional Diocese of Indre-et-Loire, France] | Established | ||
| 1791 | [Constitutional Diocese of Isčre, France] | Established | ||
| 1791 | [Constitutional Diocese of Jura, France] | Established | ||
| 1791 | [Constitutional Diocese of Landes, France] | Established | ||
| 1791 | [Constitutional Diocese of Loire-Inférieure, France] | Established | ||
| 1791 | [Constitutional Diocese of Loir-et-Cher, France] | Established | ||
| 1791 | [Constitutional Diocese of Lot, France] | Established | ||
| 1791 | [Constitutional Diocese of Lot-et-Garonne, France] | Established | ||
| 1791 | [Constitutional Diocese of Lozčre, France] | Established | ||
| 1791 | [Constitutional Diocese of Maine-et-Loire, France] | Established | ||
| 1791 | [Constitutional Diocese of Manche, France] | Established | ||
| 1791 | [Constitutional Diocese of Marne, France] | Established | ||
| 1791 | [Constitutional Diocese of Mayenne, France] | Established | ||
| 1791 | [Constitutional Diocese of Meurthe, France] | Established | ||
| 1791 | [Constitutional Diocese of Meuse, France] | Established | ||
| 1791 | [Constitutional Diocese of Morbihan, France] | Established | ||
| 1791 | [Constitutional Diocese of Moselle, France] | Established | ||
| 1791 | [Constitutional Diocese of Ničvre, France] | Established | ||
| 1791 | [Constitutional Diocese of Nord, France] | Established | ||
| 1791 | [Constitutional Diocese of Oise, France] | Established | ||
| 1791 | [Constitutional Diocese of Orne, France] | Established | ||
| 1791 | [Constitutional Diocese of Paris, France] | Established | ||
| 1791 | [Constitutional Diocese of Pas-de-Calais, France] | Established | ||
| 1791 | [Constitutional Diocese of Puy-de-Dôme, France] | Established | ||
| 1791 | [Constitutional Diocese of Pyrénées-Orientales, France] | Established | ||
| 1791 | [Constitutional Diocese of Rhône-et-Loire, France] | Established | ||
| 1791 | [Constitutional Diocese of Saône-et-Loire, France] | Established | ||
| 1791 | [Constitutional Diocese of Sarthe, France] | Established | ||
| 1791 | [Constitutional Diocese of Seine-et-Marne, France] | Established | ||
| 1791 | [Constitutional Diocese of Seine-et-Oise, France] | Established | ||
| 1791 | [Constitutional Diocese of Seine-Inférieure, France] | Established | ||
| 1791 | [Constitutional Diocese of Somme, France] | Established | ||
| 1791 | [Constitutional Diocese of Tarn, France] | Established | ||
| 1791 | [Constitutional Diocese of Var, France] | Established | ||
| 1791 | [Constitutional Diocese of Vendée, France] | Established | ||
| 1791 | [Constitutional Diocese of Vienne, France] | Established | ||
| 1791 | [Constitutional Diocese of Vosges, France] | Established | ||
| 1791 | [Constitutional Diocese of Ardčche, France] | Established | ||
| 1793 | Secretariat of State, Roman Curia | Established | ||
| 1793 | Congregation for Extraordinary Ecclesiastical Affairs, Roman Curia | Established | ||
| 1795 | Diocese of Volodymyr (Włodzimierz) et Brėst (Ukrainian) | Territory Added | ||
| 1795 | Diocese of Pińsk-Turaŭ (Ukrainian), Belarus | Territory Added | ||
| 1798 | Diocese of Trevico, Italy | Suppressed | Diocese of Lacedonia, Italy | Territory Added |
| 1799 | Diocese of Vilnius, Lithuania | Territory Lost | Diocese of Wigry, Poland | Erected |
| 1799 | Institut de l'uvre de la jeunesse Jean Joseph Allemand | Founded | ||
| 1800 | Congregation of the Sacred Hearts of Jesus and Mary | Founded | ||
| 1800 | Eparchy of Mossul (Chaldean), Iraq | Erected | ||
| 1801 | Diocese of Brugge {Bruges}, Belgium
Diocese of Ypres (Ieper), Belgium | Suppressed | Diocese of Gent {Ghent, Gand}, Belgium | Territory Added |
| 1801 | Diocese of Roermond, Netherlands | Territory Added | ||
| 1801 | [Constitutional Diocese of Ain, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Aisne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Allier, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Ardennes, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Aričge, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Aube, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Aude, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Aveyron, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Bas-Rhin, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Basses-Alpes, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Basses-Pyrénées, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Bouches-du-Rhône, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Calvados, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Cantal, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Charente, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Charente-Inférieure, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Cher, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Corrčze, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Corse, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Côte-d'Or, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Côtes-du-Nord, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Creuse, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Deux-Sčvres, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Dordogne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Doubs, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Drôme, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Eure, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Eure-et-Loir, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Finistčre, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Gard, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Gers, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Gironde, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haute-Garonne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haute-Loire, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haute-Marne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Hautes-Alpes, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haute-Saône, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Hautes-Pyrénées, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haute-Vienne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Haut-Rhin, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Hérault, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Ille-et-Vilaine, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Indre, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Indre-et-Loire, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Isčre, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Jura, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Landes, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Loire-Inférieure, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Loir-et-Cher, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Lot, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Lot-et-Garonne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Lozčre, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Maine-et-Loire, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Manche, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Marne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Mayenne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Meurthe, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Meuse, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Morbihan, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Moselle, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Ničvre, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Nord, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Oise, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Orne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Paris, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Pas-de-Calais, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Puy-de-Dôme, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Pyrénées-Orientales, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Rhône-et-Loire, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Saône-et-Loire, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Sarthe, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Seine-et-Marne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Seine-et-Oise, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Seine-Inférieure, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Somme, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Tarn, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Var, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Vendée, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Vienne, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Vosges, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Ardčche, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Cayenne, Antilles] | Territory Added | ||
| 1801 | [Constitutional Diocese of Mont-Blanc, France] | Territory Added | ||
| 1801 | [Constitutional Diocese of Saint-Domingue-Sud, Haďti] | Territory Added | ||
| 1801 | [Constitutional Diocese of Vaucluse, France] | Territory Added | ||
| 1802 | Congregation of the Schools of Charity | Founded | ||
| 1802 | Christian Brothers | Founded | ||
| 1802 | Presentation Brothers | Founded | ||
| 1804 | Diocese of Eger, Hungary | Territory Lost | Diocese of Satu Mare {Szatmár}, Romania | Erected |
| 1808 | Antonian Order of Saint Ormizda of the Chaldeans (Chaldean) | Founded | ||
| 1808 | Fathers of Mercy | Founded | ||
| 1809 | Diocese of Supraśl (Ukrainian), Belarus | Territory Lost | Diocese of Vilno (Ukrainian), Lithuania | Erected |
| 1813 | Diocese of Scardona (Skradin), Croatia | Suppressed | Diocese of Šibenik (Knin), Croatia | Territory Added |
| 1814 | Congregation of the Sacred Consulta, Roman Curia | Restored | ||
| 1815 | Oblates of the Virgin Mary | Founded | ||
| 1816 | Diocese of Cádiz, Spain | Territory Lost | Vicariate Apostolic of Gibraltar | Erected |
| 1816 | Congregation of the Census, Roman Curia | Established | ||
| 1816 | Vicariate Apostolic of London District, England, Great Britain | Territory Lost | Prefecture Apostolic of New Holland, Australia | Erected |
| 1817 | Eparchy of Beirut {Bairut} (Syrian), Lebanon | Erected | ||
| 1817 | Institute of the Josephites of Belgium | Founded | ||
| 1817 | Vicariate Apostolic of Alep, Syria | Name Changed | Vicariate Apostolic of Syria, Egypt, Arabia, and Cyprus, Syria | Name Changed |
| 1818 | Prefecture Apostolic of Islands of the Indian Ocean, Réunion | Elevated | Prefecture Apostolic of Bourbon, Réunion | Elevated |
| 1818 | Diocese of Wigry, Poland | Suppressed | Diocese of Sejny o Sejna o Augustów, Poland | Territory Added |
| 1818 | Diocese of Belcastro, Italy
Diocese of Strongoli, Italy Diocese of Umbriatico (Umbriaticum), Italy | Suppressed | Archdiocese of Santa Severina, Italy | Territory Added |
| 1818 | Diocese of Teramo, Italy | Territory Added | ||
| 1818 | Diocese of Cariati e Cerenzia, Italy | Name Changed | Diocese of Cariati, Italy
Archdiocese of Santa Severina, Italy | Territory Added |
| 1818 | Diocese of Torcello (Turris), Italy | Suppressed | Patriarchate of Venezia {Venice}, Italy | Territory Added |
| 1818 | Vicariate Apostolic of Moldavia | Erected | ||
| 1818 | Franciscan Brothers of the Third Order Regular, Mountbellow | Founded | ||
| 1819 | Prefecture Apostolic of West Indies, Antilles | Erected | ||
| 1819 | Prefecture Apostolic of New Holland, Australia | Territory Added | ||
| 1820 | Vicariate Apostolic of Great Mogul (Mughals), India | Name Changed | Vicariate Apostolic of Bombay, India | Name Changed |
| 1820 | Mission "Sui Iuris" of Hindustan, India | Elevated | Vicariate Apostolic of Tibet-Hindustan, India | Elevated |
| 1821 | Diocese of Auxerre, France | Territory Added | ||
| 1822 | Congregation of St. Basil | Founded | ||
| 1824 | Congregation for Studies, Roman Curia | Established | ||
| 1825 | Diocese of Trento, Italy (from Immediately Subject to Salzburg) | Metropolitan Changed | ||
| 1826 | Diocese of Córdoba (Tucumán), Argentina | Territory Lost | Vicariate Apostolic of San Juan de Cuyo, Argentina | Erected |
| 1826 | Prefecture Apostolic of Bourbon, Réunion | Territory Lost | Prefecture Apostolic of Batavia, Indonesia | Erected |
| 1828 | Fils de Marie Immaculée | Founded | ||
| 1828 | Institute of Charity | Founded | ||
| 1829 | Nunciature to Brazil (as Internunciature) | Established | ||
| 1829 | Nunciature to Netherlands | Established | ||
| 1830 | Diocese of Buenos Aires, Argentina | Territory Lost | Vicariate Apostolic of Montevideo, Uruguay | Erected |
| 1830 | Company of Mary for the Education of the Deaf | Founded | ||
| 1830 | Broeders van O.L. Vrouw van Lourdes | Founded | ||
| 1831 | Sons of Charity | Founded | ||
| 1832 | Priests of the Sacred Heart of Jesus of Bétharram | Founded | ||
| 1833 | Missionaries of the Sacred Hearts of Jesus and Mary | Founded | ||
| 1833 | Fratelli di San Giuseppe Benedetto Cottolengo | Founded | ||
| 1834 | Vicariate Apostolic of Mauritius | Territory Lost | Vicariate Apostolic of New Holland and Van Diemen’s Land, Australia | Erected |
| 1834 | Nunciature to Greece | Established | ||
| 1834 | Vicariate Apostolic of Nordic Missions, Germany | Territory Lost | Vicariate Apostolic of Anhalt, Germany | Erected |
| 1834 | Canons Regular of Saint John the Evangelist | Territory Added | ||
| 1835 | Institut des Frčres de la Sainte-Famille de Belley | Founded | ||
| 1836 | Congregation of the Schools of Charity | Approbation | ||
| 1836 | Mission "Sui Iuris" of Karnatic Mission / Pondicherry, India | Elevated | Vicariate Apostolic of Pondicherry, India | Elevated |
| 1837 | Congregation of Holy Cross | Founded | ||
| 1838 | Archeparchy of Tyr (Maronite), Lebanon | Erected | ||
| 1838 | Archdiocese of Cranganore (Angamala), India | Suppressed | Vicariate Apostolic of Verapoly, India | Territory Added |
| 1838 | Vicariate Apostolic of Hukwang, Shansi [Shanxi], and Shensi [Shaanxi], China | Split | Vicariate Apostolic of Houkouang, China
Vicariate Apostolic of Shansi {Scian-Si} (Chan-Si), China | Split |
| 1839 | Diocese of Linares o Nueva León, Nuevo León, México | Territory Lost | Prefecture Apostolic of Texas, USA | Erected |
| 1839 | Diocese of Ampurias e Civita, Italy | Name Changed | Diocese of Ampurias e Tempio, Italy | Name Changed |
| 1839 | Congregación de San Pedro ad-Vincula | Founded | ||
| 1839 | Diocese of Žyrovyci (Ukrainian), Lithuania | Territory Added | ||
| 1840 | Priestly Society of St. Joseph Benedict Cottolengo | Founded | ||
| 1840 | Diocese of Ličge, Belgium | Territory Lost | Vicariate Apostolic of Limburg, Netherlands | Erected |
| 1840 | Broeders van de H. Aloysius Gonzaga | Founded | ||
| 1841 | Prefecture Apostolic of Bourbon, Réunion | Territory Lost | Prefecture Apostolic of Madagascar, Madagascar | Erected |
| 1841 | Prefecture Apostolic of Mindanŕo, Philippines | Territory Added | ||
| 1842 | Vicariate Apostolic of Western Oceania | Territory Lost | Vicariate Apostolic of New Zealand | Erected |
| 1842 | Diocese of Marasc (Armenian), Turkey | Erected | ||
| 1842 | Mission "Sui Iuris" of Mardin, Turkey | Erected | ||
| 1843 | Diocese of Alger, Algeria
Diocese of Islas Canarias {Canary Islands}, Spain | Territory Lost | Vicariate Apostolic of Tunis, Tunisia | Erected |
| 1843 | Society of Saint Edmund | Founded | ||
| 1843 | Diocese of New Brunswick, Canada | Name Changed | Diocese of Fredericton, New Brunswick, Canada | Name Changed |
| 1844 | Diocese of Sovana (Soana), Italy | Name Changed | Diocese of Sovana e Pitigliano, Italy | Name Changed |
| 1844 | Vicariate Apostolic of Kansu [Gansu], China | Suppressed | Vicariate Apostolic of Shansi {Scian-Si} (Chan-Si), China | Territory Added |
| 1845 | Augustinians of the Assumption | Founded | ||
| 1845 | Religieux de Saint Vincent de Paul | Founded | ||
| 1845 | Vicariate Apostolic of Chekiang {Ce-Kiam} and Kiangsi, China | Split | Vicariate Apostolic of Chekiang {Ce-Kiam}, China
Vicariate Apostolic of Kiam-Si {Kiangsi}, China | Split |
| 1846 | Prefecture Apostolic of Two Guineas and Senegambia {Guinea Superiore e Inferiore e di Sierra Leone}, Gabon | Elevated | Vicariate Apostolic of Two Guineas and Senegambia {Guinea Superiore e Inferiore e di Sierra Leone}, Gabon | Elevated |
| 1846 | Vicariate Apostolic of Tibet-Hindustan, India | Name Changed | Vicariate Apostolic of Agra, India | Name Changed |
| 1846 | Vicariate Apostolic of Bosnia (Ottoman), Croatia
Diocese of Dubrovnik (Ragusa), Croatia | Territory Lost | Vicariate Apostolic of Herzegovina | Erected |
| 1847 | Vicariate Apostolic of King George Sounde - The Sound, Australia | Suppressed | Diocese of Adelaide, Australia
Diocese of Perth, Australia | Territory Added |
| 1847 | Prefecture Apostolic of Abyssinia, Ethiopia | Elevated | Vicariate Apostolic of Abyssinia, Ethiopia | Elevated |
| 1848 | Prefecture Apostolic of Madagascar, Madagascar | Elevated | Vicariate Apostolic of Madagascar, Madagascar | Elevated |
| 1850 | Diocese of Zaku (Chaldean), Iraq | Erected | ||
| 1850 | Diocese of Trabzon (Armenian), Turkey | Erected | ||
| 1850 | Vicariate Apostolic of Madurai and Coromandel Coast, India | Territory Lost | Vicariate Apostolic of Coimbatore, India
Vicariate Apostolic of Mysore, India | Erected |
| 1850 | Diocese of Ancira (Angora) (Armenian), Turkey | Restored | ||
| 1850 | Diocese of Cesarea di Cappadocia (Armenian), Turkey | Erected | ||
| 1850 | Diocese of Kingston, Ontario, Canada (Counties of Russell, Prescott, Carleton, and Lanark) | Territory Lost | Diocese of Bytown, Ontario, Canada | Territory Added |
| 1851 | Vicariate Apostolic of Madras, India | Territory Lost | Vicariate Apostolic of Hyderabad, India | Erected |
| 1851 | Priests of Saint Mary of Tinchebray | Founded | ||
| 1851 | Vicariate Apostolic of Egypt and Arabia, Egypt | Name Changed | Vicariate Apostolic of Egypt (Egitto), Egypt | Name Changed |
| 1852 | Diocese of Port-Louis, Mauritius | Territory Lost | Prefecture Apostolic of Seychelles | Erected |
| 1852 | Missionaries of Our Lady of La Salette | Founded | ||
| 1852 | Diocese of Gazireh (Gezira) (Chaldean), Turkey | Erected | ||
| 1852 | Diocese of Cherson, Moldova | Name Changed | Diocese of Tiraspol, Moldova | Name Changed |
| 1853 | Archdiocese of Sehna (Chaldean), Iran | Erected | ||
| 1853 | Diocese of Fredericton, New Brunswick, Canada ((between 15 Aug 1852 and Advent 1854)) | Name Changed | Diocese of Saint John in New Brunswick, New Brunswick, Canada | Name Changed |
| 1854 | Broeders van de Onbevlekte Ontvangenis van de Allerheiligste Maagd en Moeder Gods Maria | Founded | ||
| 1855 | Carmelites of Mary Immaculate | Founded | ||
| 1855 | Diocese of Montréal, Québec, Canada (Parishes of St-Mathieu de Belil, St-Marc, and St-Antoine) | Territory Lost | Diocese of Saint-Hyacinthe, Québec, Canada | Territory Added |
| 1856 | Congregation of the Blessed Sacrament | Founded | ||
| 1856 | Vicariate Apostolic of Ava e Pegů, Myanmar | Name Changed | Vicariate Apostolic of Burma, Myanmar | Name Changed |
| 1856 | Barmherzige Brüder von Montabaur | Founded | ||
| 1856 | Frčres de la Charité de Gand | Founded | ||
| 1858 | Diocese of Seert (Chaldean), Turkey | Erected | ||
| 1858 | Diocese of Sivas {Sebaste} (Armenian), Turkey | Erected | ||
| 1858 | Paulist Fathers | Founded | ||
| 1859 | Salesians of Saint John Bosco | Founded | ||
| 1859 | Diocese of Tokat {Toqat} (Armenian), Turkey | Erected | ||
| 1859 | Diocese of Bulgarian United Church (Constantinople) (Bulgarian) | Established | ||
| 1859 | Franciscan Brothers of the Third Order Regular of Brooklyn | Founded | ||
| 1862 | Congregation of the Immaculate Heart of Mary | Founded | ||
| 1863 | Diocese of Gazireh (Gezira) (Syrian), Turkey | Erected | ||
| 1863 | Congregation of the Immaculate Heart of Mary | Decretum Laudis | ||
| 1864 | Nunciature to México | Established | ||
| 1865 | Prefecture Apostolic of Congo | Erected | ||
| 1866 | Diocese of Kamyanets-Podilskyi (Kamieniec), Ukraine
Diocese of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine | United | Diocese of Lutsk, Zhytomyr, and Kamyanets-Podilskyi (Łuck, Zytomierz, and Kamienec), Ukraine | United |
| 1867 | Congregation of St. Basil | Approbation | ||
| 1867 | Archeparchy of Constantinople (Istanbul) (Armenian), Turkey | United | Patriarchate of Cilicia (Armenian), Lebanon | United |
| 1868 | Prefecture Apostolic of Sahara and Sudan | Erected | ||
| 1868 | Nunciature to Turkey | Established | ||
| 1868 | Missionaries of Africa (White Fathers) | Founded | ||
| 1868 | Diocese of Bełz (Ukrainian), Poland
Diocese of Chełm (Ukrainian), Poland | United | Diocese of Chełm and Bełz (Ukrainian), Poland | United |
| 1871 | Vicariate Apostolic of Colorado and Utah, USA | Name Changed | Vicariate Apostolic of Colorado, USA | Name Changed |
| 1871 | Oblates of St. Francis de Sales | Founded | ||
| 1874 | Salesians of Saint John Bosco | Approbation | ||
| 1877 | Diocese of Brisbane, Australia | Territory Lost | Vicariate Apostolic of Queensland, Australia | Erected |
| 1877 | Nunciature to Argentina | Established | ||
| 1877 | Nunciature to Bolivia | Established | ||
| 1877 | Nunciature to Chile | Established | ||
| 1877 | Nunciature to Ecuador | Established | ||
| 1877 | Nunciature to Peru | Established | ||
| 1877 | Nunciature to Paraguay | Established | ||
| 1877 | Nunciature to Uruguay | Established | ||
| 1877 | Diocese of Trois-Rivičres, Québec, Canada (Parishes of St-Théodore and St-André d'Acton) | Territory Lost | Diocese of Saint-Hyacinthe, Québec, Canada | Territory Added |
| 1878 | Oblates of Saints Charles and Gaudentius of Novara | Restored | ||
| 1879 | Pontifical Committee for International Eucharistic Congresses, Roman Curia | Established | ||
| 1880 | Diocese of Arequipa, Peru | Territory Lost | Vicariate Apostolic of Tarapacá, Chile | Erected |
| 1880 | Vicariate Apostolic of Central Africa {Africa Centrale}, Sudan | Territory Lost | Vicariate Apostolic of Nyanza, Uganda | Erected |
| 1880 | Prefecture Apostolic of Seychelles | Elevated | Vicariate Apostolic of Seychelles | Elevated |
| 1880 | Vicariate Apostolic of Agra, India | Territory Lost | Vicariate Apostolic of Punjab, India | Erected |
| 1881 | Diocese of La Serena, Chile | Territory Lost | Mission "Sui Iuris" of Antofagasta, Chile | Erected |
| 1881 | Archdiocese of Bosra (Melkite Greek), Syria | Name Changed | Archdiocese of Bosra e Haūrān (Melkite Greek), Syria | Name Changed |
| 1881 | Delegation to East Indies (Ceylon) | Established | ||
| 1881 | Nunciature to Haiti | Established | ||
| 1881 | Nunciature to Dominican Republic | Established | ||
| 1881 | Nunciature to Venezuela | Established | ||
| 1881 | Prefecture Apostolic of Cimbebasia, Angola | Territory Lost | Mission "Sui Iuris" of Cunčne, Angola | Erected |
| 1883 | Vicariate Apostolic of Nyanza, Uganda | Name Changed | Vicariate Apostolic of Victoria-Nyanza, Uganda | Name Changed |
| 1883 | Vicariate Apostolic of Tanganyika, Tanzania (to Vicariate Apostolic) | Elevated | ||
| 1883 | Clerical Public Association of La Hermandad de Sacerdotes Operarios Diocesanos del Sagrado Corazón de Jesús | Founded | ||
| 1884 | Archdiocese of Buenos Aires, Argentina | Territory Lost | Vicariate Apostolic of Northern Patagonia {Patagonia Settentrionale}, Argentina | Erected |
| 1884 | Vicariate Apostolic of Egypt (Egitto), Egypt | Territory Lost | Prefecture Apostolic of Delta of the Nile, Egypt | Erected |
| 1885 | Eparchy of Iskanderiya {Alexandria} (Armenian), Egypt | Erected | ||
| 1887 | Archdiocese of San Francisco, California, USA | Territory Lost | Vicariate Apostolic of Utah, USA | Erected |
| 1887 | Mission "Sui Iuris" of Antofagasta, Chile | Elevated | Vicariate Apostolic of Antofagasta, Chile | Elevated |
| 1887 | Congregation of the Missionaries of Saint Charles Borromeo | Founded | ||
| 1887 | Diocese of Eastern Bengal, India | Name Changed | Diocese of Dacca, Bangladesh | Name Changed |
| 1887 | Diocese of Central Bengal, India | Name Changed | Diocese of Krishnagar, India | Name Changed |
| 1887 | Missionary Servants of the Poor | Founded | ||
| 1887 | Discalced Mercedarians | Restored | ||
| 1889 | Delegation to East Indies (Added Malaca) | Territory Added | ||
| 1890 | Archdiocese of Agra, India | Territory Lost | Mission "Sui Iuris" of Rajputana, India | Erected |
| 1891 | Vicariate Apostolic of Arizona, USA (El Paso County in Texas) | Territory Lost | Diocese of Dallas, Texas, USA | Territory Added |
| 1891 | Prefecture Apostolic of Sahara and Sudan | Elevated | Vicariate Apostolic of Sahara and Sudan | Elevated |
| 1891 | Mission "Sui Iuris" of Rajputana, India | Elevated | Prefecture Apostolic of Rajputana, India | Elevated |
| 1892 | Diocese of Dallas, Texas, USA (Counties of El Paso, Hudspeth, and Culberson) | Territory Added | ||
| 1892 | St. Joseph’s Society of the Sacred Heart | Founded | ||
| 1892 | Diocese of Allahabad, India | Territory Lost | Prefecture Apostolic of Bettiah, India | Erected |
| 1892 | Patriarchal Exarchate of Jerusalem {Gerusalemme} (Palestine and Jordan) (Syrian), Palestine | Erected | ||
| 1894 | Diocese of Popayán, Colombia
Archdiocese of Santafé en Nueva Granada, Colombia | Territory Lost | Diocese of Tolima, Colombia | Erected |
| 1894 | Titular See of Canea | Territory Added | ||
| 1895 | Congregation of Missionaries of the Holy Family | Founded | ||
| 1896 | Diocese of Buffalo, New York, USA | Territory Lost | Diocese of Rochester, New York, USA (Counties of Steuben, Schuyler, Chemung, and Tioga) | Territory Added |
| 1898 | Vicariate Apostolic of Madagascar, Madagascar | Name Changed | Vicariate Apostolic of Central Madagascar {Madagascar Centrale}, Madagascar | Name Changed |
| 1898 | Xaverian Missionary Fathers | Founded | ||
| 1898 | Vicariate Apostolic of Kansu, China | Territory Lost | Mission "Sui Iuris" of I-li o Kul-Dia, China | Erected |
| 1898 | Franciscan Friars of the Atonement | Founded | ||
| 1898 | Titular See of Hypsus | Name Changed | Titular See of Ipsus | Name Changed |
| 1899 | Territorial Abbey of Monte Oliveto Maggiore, Italy | Erected | ||
| 1899 | Instituto Espańol de San Francisco Javier para Misiones Extranjeras | Founded | ||
| 1900 | Prefecture Apostolic of Lower Congo in Cubango, Angola | Territory Lost | Mission "Sui Iuris" of Lunda, Angola | Erected |
| 1900 | Congregation of the Holy Family of Nazareth of Blessed Father Piamarta | Founded | ||
| 1901 | Diocese of Panamá (from Bogot (Columbia) to Cartagena) | Metropolitan Changed | ||
| 1901 | Consolata Missionaries | Founded | ||
| 1901 | Franciscan Missionary Brothers | Founded | ||
| 1902 | Delegation to Philippines | Established | ||
| 1902 | Nunciature to Chile | Restored | ||
| 1903 | Sons of Divine Providence | Founded | ||
| 1903 | Little Mission for the Deaf and Dumb | Founded | ||
| 1904 | Nunciature to México | Established | ||
| 1904 | Vicariate Apostolic of Northern Patagonia {Patagonia Settentrionale}, Argentina | Suppressed | Archdiocese of Buenos Aires, Argentina | Territory Added |
| 1907 | Poveri Servi della Divina Provvidenza | Founded | ||
| 1908 | Diocese of Temuco, Chile (as Territory to become a Diocese in the future) | Established | ||
| 1908 | Congregation for Universal Inquisition, Roman Curia | Name Changed | Congregation of the Holy Office, Roman Curia | Name Changed |
| 1908 | Roman Rota, Roman Curia | Established | ||
| 1908 | Congregation for Consultations of Bishops and Other Prelates, Roman Curia | Name Changed | Congregation of the Affairs of Religious, Roman Curia | Name Changed |
| 1908 | St. Joseph’s Missionary Society of Mill Hill | Approbation | ||
| 1908 | Congregation of Servants of Charity | Founded | ||
| 1908 | Nunciature to Honduras | Established | ||
| 1908 | Nunciature to Nicaragua | Established | ||
| 1908 | Patriarchal Vicariate of Turkey (Syrian) | Erected | ||
| 1908 | Vicariate Apostolic of Belgian Congo {Congo Belga} o Indipendente, Congo (Dem. Rep.) | Name Changed | Vicariate Apostolic of Belgian Congo {Congo Belga}, Congo (Dem. Rep.) | Name Changed |
| 1908 | Patriarchal Vicariate of Jerusalem (Chaldean), Palestine | Erected | ||
| 1909 | Congregation of Mariannhill Missionaries | Founded | ||
| 1909 | Oblates of Saint Joseph | Approbation | ||
| 1911 | Catholic Foreign Mission Society of America | Founded | ||
| 1912 | Congregation of Servants of Charity | Decretum Laudis | ||
| 1913 | Diocese of Talca, Chile (as Territory to become a Diocese in the future) | Established | ||
| 1914 | Eparchy of Križevci (Kreutz) (Križevci), Croatia | Territory Lost | Apostolic Administration of Bosnia-Hercegovina (Ukrainian) | Erected |
| 1915 | Diocese of Seert (Chaldean), Turkey | Suppressed | Eparchy of Diarbekir (Amida) (Chaldean), Turkey | Territory Added |
| 1916 | Diocese of Chillán, Chile (as Territory to become a Diocese in the future) | Established | ||
| 1917 | Missionary Society of St. Columban | Founded | ||
| 1917 | Apostolic Exarchate of Russia (Russian) | Erected | ||
| 1917 | Nunciature to Bolivia (to Internunciature) | Elevated | ||
| 1917 | Prefecture Apostolic of Bettiah, India | Name Changed | Vicariate Apostolic of Patna, India | Name Changed |
| 1918 | Vicariate Apostolic of Kimberley in Orange, South Africa | Name Changed | Vicariate Apostolic of Kimberley in South Africa {nell’Africa Meridionale} | Name Changed |
| 1918 | Scarboro Foreign Mission Society | Founded | ||
| 1918 | Sons of Charity | Founded | ||
| 1919 | Order of Imitation of Christ | Founded | ||
| 1919 | Military Ordinariate of Poland, Military | Erected | ||
| 1920 | Society of Divine Vocations | Founded | ||
| 1920 | Nunciature to Yugoslavia | Established | ||
| 1920 | Nunciature to Germany | Established | ||
| 1920 | Nunciature to Hungary | Established | ||
| 1920 | Prefecture Apostolic of Schlewig-Holstein, Germany (North Schleswig) | Territory Lost | Vicariate Apostolic of Denmark | Territory Added |
| 1921 | Vicariate Apostolic of Kivu, Burundi | Name Changed | Vicariate Apostolic of Urundi and Kivu, Burundi | Name Changed |
| 1921 | Prefecture Apostolic of Rhétie (Rezia, Rhaetia), Switzerland | Suppressed | Diocese of Chur, Switzerland | Territory Added |
| 1921 | Congregation of Saint Michael the Archangel | Founded | ||
| 1922 | Mission "Sui Iuris" of I-li o Kul-Dia, China | Territory Added | ||
| 1922 | Nunciature to El Salvador | Established | ||
| 1923 | Nunciature to Panama | Established | ||
| 1923 | Apostolic Administration of Szombathely and Gurk in Yugoslavia | Erected | ||
| 1924 | Sons of Charity | Approbation | ||
| 1924 | Pontifical Commission for Sacred Art, Roman Curia | Established | ||
| 1925 | Diocese of Martinique (Fort-de-France e Saint Pierre), Antilles (from Bordeaux, France) | Metropolitan Changed | ||
| 1925 | Nunciature to Prussia | Established | ||
| 1925 | Apostolic Administration of Bosnia-Hercegovina (Ukrainian) | Suppressed | Eparchy of Križevci (Kreutz) (Križevci), Croatia | Territory Added |
| 1926 | Diocese of Bulgarian United Church (Constantinople) (Bulgarian)
Vicariate Apostolic of Macedonia (Thessalonika) (Bulgarian) Vicariate Apostolic of Tracia (Hadrianopolis) (Bulgarian), Turkey | Territory Lost | Apostolic Exarchate of Sofia (Bulgarian), Bulgaria | Erected |
| 1926 | Rogationists of the Heart of Jesus | Founded | ||
| 1927 | Diocese of Mallorca y Ibiza, Spain | Split | Diocese of Ibiza, Spain
Diocese of Mallorca, Spain | Split |
| 1927 | Vincentian Congregation (Syro-Malabar) | Founded | ||
| 1927 | Nunciature to Liberia | Established | ||
| 1928 | Congregation of Servants of Charity | Approbation | ||
| 1928 | Missionary Servants of the Most Holy Trinity | Founded | ||
| 1928 | Missionaries of the Plain | Established | ||
| 1929 | Frčres Joséphites | Founded | ||
| 1930 | Catholic Foreign Mission Society of America | Approbation | ||
| 1930 | Titular See of Druzipara | Name Changed | Titular See of Drizipara | Name Changed |
| 1930 | Titular See of Flaviopolis | Name Changed | Titular See of Cratia | Name Changed |
| 1931 | Congregation of Rural Catechists | Approbation | ||
| 1931 | Congregation of Saint Theresa of the Child Jesus Little Flower | Founded | ||
| 1931 | Titular See of Abdera | Territory Added | ||
| 1932 | St. Patrick’s Society for the Foreign Missions | Founded | ||
| 1933 | Missionary Congregation of the Blessed Sacrament | Founded | ||
| 1933 | Titular See of Forontoniana | Established | ||
| 1933 | Titular See of Casae Calanae | Established | ||
| 1933 | Titular See of Dagnum | Established | ||
| 1933 | Titular See of Lestrona | Established | ||
| 1933 | Titular See of Sinnipsa | Established | ||
| 1933 | Titular See of Druas | Established | ||
| 1933 | Titular See of Absorus | Established | ||
| 1933 | Titular See of Abaradira | Established | ||
| 1933 | Titular See of Abari | Established | ||
| 1933 | Titular See of Abbir Germaniciana | Established | ||
| 1933 | Titular See of Abidda | Established | ||
| 1933 | Titular See of Abila in Palaestina | Established | ||
| 1933 | Titular See of Abitinae | Established | ||
| 1933 | Titular See of Abora | Established | ||
| 1933 | Titular See of Absa Salla | Established | ||
| 1933 | Titular See of Abthugni | Established | ||
| 1933 | Titular See of Abziri | Established | ||
| 1933 | Titular See of Acarassus | Established | ||
| 1933 | Titular See of Achelous | Established | ||
| 1933 | Titular See of Achyraus | Established | ||
| 1933 | Titular See of Acilisene | Established | ||
| 1933 | Titular See of Acholla | Established | ||
| 1933 | Titular See of Acrassus | Established | ||
| 1933 | Titular See of Acufida | Established | ||
| 1933 | Titular See of Aëtus | Established | ||
| 1933 | Titular See of Africa | Established | ||
| 1933 | Titular See of Afufenia | Established | ||
| 1933 | Titular See of Aggar | Established | ||
| 1933 | Titular See of Aeliae | Established | ||
| 1933 | Titular See of Aggersel | Established | ||
| 1933 | Titular See of Agrippias | Established | ||
| 1933 | Titular See of Ala Miliaria | Established | ||
| 1933 | Titular See of Belgrado e Semendria o Smederevo | Name Changed | Titular See of Alba Maritima | Name Changed |
| 1933 | Titular See of Albulae | Established | ||
| 1933 | Titular See of Cambysopolis | Name Changed | Titular See of Alexandria Minor | Name Changed |
| 1933 | Titular See of Alphocranon | Established | ||
| 1933 | Titular See of Altava | Established | ||
| 1933 | Titular See of Altiburus | Established | ||
| 1933 | Titular See of Amadassa | Established | ||
| 1933 | Titular See of Amantia | Established | ||
| 1933 | Titular See of Amaura | Established | ||
| 1933 | Titular See of Ambia | Established | ||
| 1933 | Titular See of Amblada | Established | ||
| 1933 | Titular See of Amphipolis | Established | ||
| 1933 | Titular See of Ammoniace | Established | ||
| 1933 | Titular See of Ampora | Established | ||
| 1933 | Titular See of Amudarsa | Established | ||
| 1933 | Titular See of Anatetarte | Established | ||
| 1933 | Titular See of Anaea | Established | ||
| 1933 | Titular See of Aphnaeum | Established | ||
| 1933 | Titular See of Ancyra Ferrea | Established | ||
| 1933 | Titular See of Andeda | Established | ||
| 1933 | Titular See of Andropolis | Established | ||
| 1933 | Titular See of Anineta | Established | ||
| 1933 | Titular See of Antiochia ad Maeandrum | Established | ||
| 1933 | Titular See of Antiochia Parva | Established | ||
| 1933 | Titular See of Apamea Cibotus | Established | ||
| 1933 | Titular See of Aperlae | Established | ||
| 1933 | Titular See of Apisa Maius | Established | ||
| 1933 | Titular See of Apollonia Salbace | Established | ||
| 1933 | Titular See of Apollonias | Established | ||
| 1933 | Titular See of Apollonis | Established | ||
| 1933 | Titular See of Apollonopolis Magna | Established | ||
| 1933 | Titular See of Apollonopolis Parva | Established | ||
| 1933 | Titular See of Apollonos-Hieron | Established | ||
| 1933 | Titular See of Appia | Established | ||
| 1933 | Titular See of Aprus | Established | ||
| 1933 | Titular See of Aquae Albae in Byzacena | Established | ||
| 1933 | Titular See of Aquae Albae in Mauretania | Established | ||
| 1933 | Titular See of Aquae in Byzacena | Established | ||
| 1933 | Titular See of Aquae in Dacia | Established | ||
| 1933 | Titular See of Aquae in Mauretania | Established | ||
| 1933 | Titular See of Aquae in Numidia | Established | ||
| 1933 | Titular See of Aquae in Proconsulari | Established | ||
| 1933 | Titular See of Aquae Novae in Numidia | Established | ||
| 1933 | Titular See of Aquae Novae in Proconsulari | Established | ||
| 1933 | Titular See of Aquae Regiae | Established | ||
| 1933 | Titular See of Aquae Sirenses | Established | ||
| 1933 | Titular See of Aquae Thibilitanae | Established | ||
| 1933 | Titular See of Aptuca | Established | ||
| 1933 | Titular See of Arabia | Established | ||
| 1933 | Titular See of Aradi | Established | ||
| 1933 | Titular See of Araxa | Established | ||
| 1933 | Titular See of Arae in Mauretania | Established | ||
| 1933 | Titular See of Arae in Numidia | Established | ||
| 1933 | Titular See of Arba | Established | ||
| 1933 | Titular See of Arbanum | Established | ||
| 1933 | Titular See of Ardamerium | Established | ||
| 1933 | Titular See of Arena | Established | ||
| 1933 | Titular See of Ariarathia | Established | ||
| 1933 | Titular See of Aristium | Established | ||
| 1933 | Titular See of Arneae | Established | ||
| 1933 | Titular See of Arsacal | Established | ||
| 1933 | Titular See of Arsamosata | Established | ||
| 1933 | Titular See of Arsennaria | Established | ||
| 1933 | Titular See of Aspona | Established | ||
| 1933 | Titular See of Assava | Established | ||
| 1933 | Titular See of Astypalaea | Established | ||
| 1933 | Titular See of Asuoremixta | Established | ||
| 1933 | Titular See of Atenia | Established | ||
| 1933 | Titular See of Attanasus | Established | ||
| 1933 | Titular See of Augurus | Established | ||
| 1933 | Titular See of Augustopolis in Palaestina | Established | ||
| 1933 | Titular See of Aurocla | Established | ||
| 1933 | Titular See of Aurusuliana | Established | ||
| 1933 | Titular See of Ausafa | Established | ||
| 1933 | Titular See of Ausuccura | Established | ||
| 1933 | Titular See of Autenti | Established | ||
| 1933 | Titular See of Auzegera | Established | ||
| 1933 | Titular See of Avensa | Established | ||
| 1933 | Titular See of Avioccala | Established | ||
| 1933 | Titular See of Avissa | Established | ||
| 1933 | Titular See of Avitta Bibba | Established | ||
| 1933 | Titular See of Azura | Established | ||
| 1933 | Titular See of Bahanna | Established | ||
| 1933 | Titular See of Babylon | Established | ||
| 1933 | Titular See of Babra | Established | ||
| 1933 | Titular See of Bacanaria | Established | ||
| 1933 | Titular See of Bacatha in Arabia | Established | ||
| 1933 | Titular See of Bacatha in Palaestina | Established | ||
| 1933 | Titular See of Badiae | Established | ||
| 1933 | Titular See of Bagai | Established | ||
| 1933 | Titular See of Baia | Established | ||
| 1933 | Titular See of Balbura | Established | ||
| 1933 | Titular See of Balecium | Established | ||
| 1933 | Titular See of Baliana | Established | ||
| 1933 | Titular See of Bamaccora | Established | ||
| 1933 | Titular See of Bapara | Established | ||
| 1933 | Titular See of Barata | Established | ||
| 1933 | Titular See of Barcusus | Established | ||
| 1933 | Titular See of Bareta | Established | ||
| 1933 | Titular See of Bargylia | Established | ||
| 1933 | Titular See of Barica | Established | ||
| 1933 | Titular See of Baris in Pisidia | Established | ||
| 1933 | Titular See of Bassiana | Established | ||
| 1933 | Titular See of Batnae | Established | ||
| 1933 | Titular See of Bavagaliana | Established | ||
| 1933 | Titular See of Bela | Established | ||
| 1933 | Titular See of Belabitene | Established | ||
| 1933 | Titular See of Belali | Established | ||
| 1933 | Titular See of Belesasa | Established | ||
| 1933 | Titular See of Bencenna | Established | ||
| 1933 | Titular See of Benepota | Established | ||
| 1933 | Titular See of Beneventum | Established | ||
| 1933 | Titular See of Bennefa | Established | ||
| 1933 | Titular See of Berrhoea | Established | ||
| 1933 | Titular See of Betagbarar | Established | ||
| 1933 | Titular See of Bethzabda | Established | ||
| 1933 | Titular See of Bilta | Established | ||
| 1933 | Titular See of Binda | Established | ||
| 1933 | Titular See of Bisica | Established | ||
| 1933 | Titular See of Bizya | Established | ||
| 1933 | Titular See of Bladia | Established | ||
| 1933 | Titular See of Blaundus | Established | ||
| 1933 | Titular See of Bocconia | Established | ||
| 1933 | Titular See of Bonitza | Established | ||
| 1933 | Titular See of Bononia | Established | ||
| 1933 | Titular See of Bonusta | Established | ||
| 1933 | Titular See of Boreum | Established | ||
| 1933 | Titular See of Boseta | Established | ||
| 1933 | Titular See of Botriana | Established | ||
| 1933 | Titular See of Bria | Established | ||
| 1933 | Titular See of Bruzus | Established | ||
| 1933 | Titular See of Bubon | Established | ||
| 1933 | Titular See of Bucellus | Established | ||
| 1933 | Titular See of Buffada | Established | ||
| 1933 | Titular See of Bulgarophygum | Established | ||
| 1933 | Titular See of Cabarsussi | Established | ||
| 1933 | Titular See of Bulla | Established | ||
| 1933 | Titular See of Burca | Established | ||
| 1933 | Titular See of Bure | Established | ||
| 1933 | Titular See of Buruni | Established | ||
| 1933 | Titular See of Butus | Established | ||
| 1933 | Titular See of Buthrotum | Established | ||
| 1933 | Titular See of Caltadria | Established | ||
| 1933 | Titular See of Campania | Established | ||
| 1933 | Titular See of Caeciri | Established | ||
| 1933 | Titular See of Caesarea in Bithynia | Established | ||
| 1933 | Titular See of Caesarea in Numidia | Established | ||
| 1933 | Titular See of Caesarea in Thessalia | Established | ||
| 1933 | Titular See of Caesariana | Established | ||
| 1933 | Titular See of Cana | Established | ||
| 1933 | Titular See of Cantanus | Established | ||
| 1933 | Titular See of Caput Cilla | Established | ||
| 1933 | Titular See of Capra | Established | ||
| 1933 | Titular See of Carallia | Established | ||
| 1933 | Titular See of Carcabia | Established | ||
| 1933 | Titular See of Cardabuntha | Established | ||
| 1933 | Titular See of Cariana | Established | ||
| 1933 | Titular See of Carpi | Established | ||
| 1933 | Titular See of Casae in Pamphylia | Established | ||
| 1933 | Titular See of Casae Medianae | Established | ||
| 1933 | Titular See of Casae Nigrae | Established | ||
| 1933 | Titular See of Castellum in Mauretania | Established | ||
| 1933 | Titular See of Castellum in Numidia | Established | ||
| 1933 | Titular See of Castellum Ripae | Established | ||
| 1933 | Titular See of Castellum Tatroportus | Established | ||
| 1933 | Titular See of Castellum Tingitii | Established | ||
| 1933 | Titular See of Castellum Iabar | Established | ||
| 1933 | Titular See of Castellum Medianum | Established | ||
| 1933 | Titular See of Castellum Minus | Established | ||
| 1933 | Titular See of Castra Galbae | Established | ||
| 1933 | Titular See of Castra Martis | Established | ||
| 1933 | Titular See of Castra Nova | Established | ||
| 1933 | Titular See of Castra Severiana | Established | ||
| 1933 | Titular See of Catabum Castra | Established | ||
| 1933 | Titular See of Cataquas | Established | ||
| 1933 | Titular See of Chalcis in Europa | Established | ||
| 1933 | Titular See of Charac-Moba | Established | ||
| 1933 | Titular See of Catula | Established | ||
| 1933 | Titular See of Cea | Established | ||
| 1933 | Titular See of Cedamusa | Established | ||
| 1933 | Titular See of Cediae | Established | ||
| 1933 | Titular See of Cephas | Established | ||
| 1933 | Titular See of Cefala | Established | ||
| 1933 | Titular See of Celerina | Established | ||
| 1933 | Titular See of Cellae in Mauretania | Established | ||
| 1933 | Titular See of Cellae in Proconsulari | Established | ||
| 1933 | Titular See of Cemerinianus | Established | ||
| 1933 | Titular See of Cenculiana | Established | ||
| 1933 | Titular See of Cenae | Established | ||
| 1933 | Titular See of Centenaria | Established | ||
| 1933 | Titular See of Centuriones | Established | ||
| 1933 | Titular See of Ceramussa | Established | ||
| 1933 | Titular See of Cerasa | Established | ||
| 1933 | Titular See of Cerbali | Established | ||
| 1933 | Titular See of Ceretapa | Established | ||
| 1933 | Titular See of Cerynia | Established | ||
| 1933 | Titular See of Cernitza | Established | ||
| 1933 | Titular See of Chersonesus in Europa | Established | ||
| 1933 | Titular See of Chimaera | Established | ||
| 1933 | Titular See of Cidramus | Established | ||
| 1933 | Titular See of Cilibia | Established | ||
| 1933 | Titular See of Choma | Established | ||
| 1933 | Titular See of Chonochora | Established | ||
| 1933 | Titular See of Chrysopolis in Macedonia | Established | ||
| 1933 | Titular See of Christianopolis | Established | ||
| 1933 | Titular See of Chullu | Established | ||
| 1933 | Titular See of Chusira | Established | ||
| 1933 | Titular See of Choba | Established | ||
| 1933 | Titular See of Coela | Established | ||
| 1933 | Titular See of Coeliana | Established | ||
| 1933 | Titular See of Cyanae | Established | ||
| 1933 | Titular See of Cincari | Established | ||
| 1933 | Titular See of Cinnaborium | Established | ||
| 1933 | Titular See of Cynopolis in Aegypto | Established | ||
| 1933 | Titular See of Cyparissia | Established | ||
| 1933 | Titular See of Ciscissus | Established | ||
| 1933 | Titular See of Cissi | Established | ||
| 1933 | Titular See of Cissita | Established | ||
| 1933 | Titular See of Citium | Established | ||
| 1933 | Titular See of Claneus | Established | ||
| 1933 | Titular See of Cleopatris | Established | ||
| 1933 | Titular See of Clypia | Established | ||
| 1933 | Titular See of Cnidus | Established | ||
| 1933 | Titular See of Cnossus | Established | ||
| 1933 | Titular See of Codaca | Established | ||
| 1933 | Titular See of Codrula | Established | ||
| 1933 | Titular See of Colbasa | Established | ||
| 1933 | Titular See of Colonia in Cappadocia | Established | ||
| 1933 | Titular See of Columnata | Established | ||
| 1933 | Titular See of Comama | Established | ||
| 1933 | Titular See of Comba | Established | ||
| 1933 | Titular See of Cone | Established | ||
| 1933 | Titular See of Coprithis | Established | ||
| 1933 | Titular See of Corniculana | Established | ||
| 1933 | Titular See of Coropissus | Established | ||
| 1933 | Titular See of Cos | Established | ||
| 1933 | Titular See of Cozyla | Established | ||
| 1933 | Titular See of Cremna | Established | ||
| 1933 | Titular See of Crepedula | Established | ||
| 1933 | Titular See of Cresima | Established | ||
| 1933 | Titular See of Cubda | Established | ||
| 1933 | Titular See of Cufruta | Established | ||
| 1933 | Titular See of Cuicul | Established | ||
| 1933 | Titular See of Culusi | Established | ||
| 1933 | Titular See of Cursola | Established | ||
| 1933 | Titular See of Cululi | Established | ||
| 1933 | Titular See of Dadybra | Established | ||
| 1933 | Titular See of Thynias | Name Changed | Titular See of Daphnusia | Name Changed |
| 1933 | Titular See of Daldis | Established | ||
| 1933 | Titular See of Dalisandus in Isauria | Established | ||
| 1933 | Titular See of Dalisandus in Pamphylia | Established | ||
| 1933 | Titular See of Daphnutium | Established | ||
| 1933 | Titular See of Dascylium | Established | ||
| 1933 | Titular See of Decoriana | Established | ||
| 1933 | Titular See of Deultum | Established | ||
| 1933 | Titular See of Dices | Established | ||
| 1933 | Titular See of Diocletianopolis in Thebaide | Established | ||
| 1933 | Titular See of Diocletianopolis in Thracia | Established | ||
| 1933 | Titular See of Dioshieron | Established | ||
| 1933 | Titular See of Diospolis Inferior | Established | ||
| 1933 | Titular See of Diospolis Superior | Established | ||
| 1933 | Titular See of Dystis | Established | ||
| 1933 | Titular See of Dorostorum | Established | ||
| 1933 | Titular See of Ecdaumava | Established | ||
| 1933 | Titular See of Ecsalus | Established | ||
| 1933 | Titular See of Edistiana | Established | ||
| 1933 | Titular See of Egnatia | Established | ||
| 1933 | Titular See of Evaria | Name Changed | Titular See of Euroea in Phoenicia | Name Changed |
| 1933 | Titular See of Elatea | Established | ||
| 1933 | Titular See of Elephantaria in Mauretania | Established | ||
| 1933 | Titular See of Elephantaria in Proconsulari | Established | ||
| 1933 | Titular See of Elis | Established | ||
| 1933 | Titular See of Eluza | Established | ||
| 1933 | Titular See of Eminentiana | Established | ||
| 1933 | Titular See of Equizetum | Established | ||
| 1933 | Titular See of Eressus | Established | ||
| 1933 | Titular See of Erra | Established | ||
| 1933 | Titular See of Etenna | Established | ||
| 1933 | Titular See of Euaza | Established | ||
| 1933 | Titular See of Eudocia | Established | ||
| 1933 | Titular See of Eutyme | Established | ||
| 1933 | Titular See of Hadriane | Established | ||
| 1933 | Titular See of Hadriania | Established | ||
| 1933 | Titular See of Hadrianopolis in Epiro | Established | ||
| 1933 | Titular See of Hadrianopolis in Pisidia | Established | ||
| 1933 | Titular See of Hadrianotherae | Established | ||
| 1933 | Titular See of Heliosebaste | Established | ||
| 1933 | Titular See of Helos | Established | ||
| 1933 | Titular See of Heraclea ad Latmum | Established | ||
| 1933 | Titular See of Heraclea Pelagoniae | Established | ||
| 1933 | Titular See of Heraclea Pontica | Established | ||
| 1933 | Titular See of Heraclea Salbace | Established | ||
| 1933 | Titular See of Heracleopolis Magna | Established | ||
| 1933 | Titular See of Hermiana | Established | ||
| 1933 | Titular See of Hermocapelia | Established | ||
| 1933 | Titular See of Hermonthis | Established | ||
| 1933 | Titular See of Hexamilium | Established | ||
| 1933 | Titular See of Fallaba | Established | ||
| 1933 | Titular See of Fata | Established | ||
| 1933 | Titular See of Febiana | Established | ||
| 1933 | Titular See of Feradi Maius | Established | ||
| 1933 | Titular See of Feradi Minus | Established | ||
| 1933 | Titular See of Ficus | Established | ||
| 1933 | Titular See of Fidoloma | Established | ||
| 1933 | Titular See of Filaca | Established | ||
| 1933 | Titular See of Fissiana | Established | ||
| 1933 | Titular See of Flumenpiscense | Established | ||
| 1933 | Titular See of Flenucleta | Established | ||
| 1933 | Titular See of Floriana | Established | ||
| 1933 | Titular See of Flumenzer | Established | ||
| 1933 | Titular See of Foratiana | Established | ||
| 1933 | Titular See of Forma | Established | ||
| 1933 | Titular See of Furnos Minor | Established | ||
| 1933 | Titular See of Fronta | Established | ||
| 1933 | Titular See of Pharan | Established | ||
| 1933 | Titular See of Phatanus | Established | ||
| 1933 | Titular See of Phelbes | Established | ||
| 1933 | Titular See of Phellus | Established | ||
| 1933 | Titular See of Phaena | Established | ||
| 1933 | Titular See of Phoenice | Established | ||
| 1933 | Titular See of Phaeno | Established | ||
| 1933 | Titular See of Philadelphia Minor | Established | ||
| 1933 | Titular See of Philae | Established | ||
| 1933 | Titular See of Phytea | Established | ||
| 1933 | Titular See of Photice | Established | ||
| 1933 | Titular See of Phragonis | Established | ||
| 1933 | Titular See of Gabae | Established | ||
| 1933 | Titular See of Gadiaufala | Established | ||
| 1933 | Titular See of Gaguari | Established | ||
| 1933 | Titular See of Garriana | Established | ||
| 1933 | Titular See of Gaudiaba | Established | ||
| 1933 | Titular See of Gauriana | Established | ||
| 1933 | Titular See of Gazera | Established | ||
| 1933 | Titular See of Gegi | Established | ||
| 1933 | Titular See of Gemellae in Byzacena | Established | ||
| 1933 | Titular See of Gemellae in Numidia | Established | ||
| 1933 | Titular See of Gerara | Established | ||
| 1933 | Titular See of Gergis | Established | ||
| 1933 | Titular See of Germa in Hellesponto | Established | ||
| 1933 | Titular See of Germania in Dacia | Established | ||
| 1933 | Titular See of Germania in Numidia | Established | ||
| 1933 | Titular See of Gigthi | Established | ||
| 1933 | Titular See of Gilba | Established | ||
| 1933 | Titular See of Girus | Established | ||
| 1933 | Titular See of Girus Tarasii | Established | ||
| 1933 | Titular See of Giru Mons | Established | ||
| 1933 | Titular See of Giru Marcelli | Established | ||
| 1933 | Titular See of Gisipa | Established | ||
| 1933 | Titular See of Gypsaria | Established | ||
| 1933 | Titular See of Giufi | Established | ||
| 1933 | Titular See of Giufi Salaria | Established | ||
| 1933 | Titular See of Glavinitza | Established | ||
| 1933 | Titular See of Gomphi | Established | ||
| 1933 | Titular See of Gor | Established | ||
| 1933 | Titular See of Gordoserba | Established | ||
| 1933 | Titular See of Gratiana | Established | ||
| 1933 | Titular See of Gubaliana | Established | ||
| 1933 | Titular See of Gummi in Byzacena | Established | ||
| 1933 | Titular See of Gummi in Proconsulari | Established | ||
| 1933 | Titular See of Gunela | Established | ||
| 1933 | Titular See of Gunugus | Established | ||
| 1933 | Titular See of Guzabeta | Established | ||
| 1933 | Titular See of Hieron | Established | ||
| 1933 | Titular See of Hierpiniana | Established | ||
| 1933 | Titular See of Hyda in Lycaonia | Established | ||
| 1933 | Titular See of Hyllarima | Established | ||
| 1933 | Titular See of Hilta | Established | ||
| 1933 | Titular See of Hypselis | Established | ||
| 1933 | Titular See of Hyrcanis | Established | ||
| 1933 | Titular See of Homona | Established | ||
| 1933 | Titular See of Horrea Coelia | Established | ||
| 1933 | Titular See of Horrea Aninici | Established | ||
| 1933 | Titular See of Horreomargum | Established | ||
| 1933 | Titular See of Horta | Established | ||
| 1933 | Titular See of Hospita | Established | ||
| 1933 | Titular See of Horaea | Established | ||
| 1933 | Titular See of Ierafi | Established | ||
| 1933 | Titular See of Iucundiana | Established | ||
| 1933 | Titular See of Iubaltiana | Established | ||
| 1933 | Titular See of Iunca in Byzacena | Established | ||
| 1933 | Titular See of Iunca in Mauretania | Established | ||
| 1933 | Titular See of Iustiniana Prima | Established | ||
| 1933 | Titular See of Ida in Mauretania | Established | ||
| 1933 | Titular See of Idassa | Established | ||
| 1933 | Titular See of Idebessus | Established | ||
| 1933 | Titular See of Idicra | Established | ||
| 1933 | Titular See of Igilgili | Established | ||
| 1933 | Titular See of Ingila | Established | ||
| 1933 | Titular See of Ilistra | Established | ||
| 1933 | Titular See of Ita | Established | ||
| 1933 | Titular See of Iziriana | Established | ||
| 1933 | Titular See of Izirzada | Established | ||
| 1933 | Titular See of Iamnia | Established | ||
| 1933 | Titular See of Ioannina | Established | ||
| 1933 | Titular See of Ios | Established | ||
| 1933 | Titular See of Iotapa in Isauria | Established | ||
| 1933 | Titular See of Iotapa in Palaestina | Established | ||
| 1933 | Titular See of Lacubaza | Established | ||
| 1933 | Titular See of Lagina | Established | ||
| 1933 | Titular See of Lamasba | Established | ||
| 1933 | Titular See of Lambiridi | Established | ||
| 1933 | Titular See of Lamdia | Established | ||
| 1933 | Titular See of Lamphua | Established | ||
| 1933 | Titular See of Lamiggiga | Established | ||
| 1933 | Titular See of Lamsorti | Established | ||
| 1933 | Titular See of Lamzella | Established | ||
| 1933 | Titular See of Laodicea ad Libanum | Established | ||
| 1933 | Titular See of Laodicea Combusta | Established | ||
| 1933 | Titular See of Lapda | Established | ||
| 1933 | Titular See of Lapithus | Established | ||
| 1933 | Titular See of Lari Castellum | Established | ||
| 1933 | Titular See of Latopolis | Established | ||
| 1933 | Titular See of Lauzadus | Established | ||
| 1933 | Titular See of Lebessus | Established | ||
| 1933 | Titular See of Leges | Established | ||
| 1933 | Titular See of Legia | Established | ||
| 1933 | Titular See of Legis Volumni | Established | ||
| 1933 | Titular See of Lemellefa | Established | ||
| 1933 | Titular See of Lemfocta | Established | ||
| 1933 | Titular See of Leontopolis in Pamphylia | Established | ||
| 1933 | Titular See of Leptiminus | Established | ||
| 1933 | Titular See of Liberalia | Established | ||
| 1933 | Titular See of Libertina | Established | ||
| 1933 | Titular See of Lycaonia | Established | ||
| 1933 | Titular See of Lidoricium | Established | ||
| 1933 | Titular See of Limata | Established | ||
| 1933 | Titular See of Limnae | Established | ||
| 1933 | Titular See of Lysinia | Established | ||
| 1933 | Titular See of Lititza | Established | ||
| 1933 | Titular See of Lizicus | Established | ||
| 1933 | Titular See of Lugura | Established | ||
| 1933 | Titular See of Lupadium | Established | ||
| 1933 | Titular See of Luperciana | Established | ||
| 1933 | Titular See of Macomades | Established | ||
| 1933 | Titular See of Macomades Rusticiana | Established | ||
| 1933 | Titular See of Macriana in Mauretania | Established | ||
| 1933 | Titular See of Macriana Maior | Established | ||
| 1933 | Titular See of Macriana Minor | Established | ||
| 1933 | Titular See of Madarsuma | Established | ||
| 1933 | Titular See of Mades | Established | ||
| 1933 | Titular See of Magarmel | Established | ||
| 1933 | Titular See of Magnesia ad Sipylum | Established | ||
| 1933 | Titular See of Maina | Established | ||
| 1933 | Titular See of Maiuca | Established | ||
| 1933 | Titular See of Maiumas Gazae | Established | ||
| 1933 | Titular See of Malliana | Established | ||
| 1933 | Titular See of Malus | Established | ||
| 1933 | Titular See of Manaccenser | Established | ||
| 1933 | Titular See of Maraguia | Established | ||
| 1933 | Titular See of Marazanae | Established | ||
| 1933 | Titular See of Marazanae Regiae | Established | ||
| 1933 | Titular See of Marcelliana | Established | ||
| 1933 | Titular See of Mareotes | Established | ||
| 1933 | Titular See of Margum | Established | ||
| 1933 | Titular See of Maeonia | Established | ||
| 1933 | Titular See of Mammilla | Established | ||
| 1933 | Titular See of Marida | Established | ||
| 1933 | Titular See of Maronana | Established | ||
| 1933 | Titular See of Masclianae | Established | ||
| 1933 | Titular See of Mascula | Established | ||
| 1933 | Titular See of Maximiana in Byzacena | Established | ||
| 1933 | Titular See of Maximianae | Established | ||
| 1933 | Titular See of Maximianopolis in Pamphylia | Established | ||
| 1933 | Titular See of Maximianopolis in Rhodope | Established | ||
| 1933 | Titular See of Maximianopolis in Thebaide | Established | ||
| 1933 | Titular See of Maxita | Established | ||
| 1933 | Titular See of Mastaura in Lycia | Established | ||
| 1933 | Titular See of Masuccaba | Established | ||
| 1933 | Titular See of Mathara in Numidia | Established | ||
| 1933 | Titular See of Materiana | Established | ||
| 1933 | Titular See of Maturba | Established | ||
| 1933 | Titular See of Maura | Established | ||
| 1933 | Titular See of Mazaca | Established | ||
| 1933 | Titular See of Medaba | Established | ||
| 1933 | Titular See of Medeli | Established | ||
| 1933 | Titular See of Media | Established | ||
| 1933 | Titular See of Mediana | Established | ||
| 1933 | Titular See of Medianas Zabuniorum | Established | ||
| 1933 | Titular See of Megalopolis in Peloponneso | Established | ||
| 1933 | Titular See of Megalopolis in Proconsulari | Established | ||
| 1933 | Titular See of Mela | Established | ||
| 1933 | Titular See of Meloë in Isauria | Established | ||
| 1933 | Titular See of Melzi | Established | ||
| 1933 | Titular See of Membressa | Established | ||
| 1933 | Titular See of Menefessi | Established | ||
| 1933 | Titular See of Menelaites | Established | ||
| 1933 | Titular See of Menois | Established | ||
| 1933 | Titular See of Merus | Established | ||
| 1933 | Titular See of Mesarfelta | Established | ||
| 1933 | Titular See of Mesotymolus | Established | ||
| 1933 | Titular See of Meta | Established | ||
| 1933 | Titular See of Metaba | Established | ||
| 1933 | Titular See of Metelis | Established | ||
| 1933 | Titular See of Metrae | Established | ||
| 1933 | Titular See of Metropolis in Pisidia | Established | ||
| 1933 | Titular See of Mibiarca | Established | ||
| 1933 | Titular See of Midaëum | Established | ||
| 1933 | Titular See of Midica | Established | ||
| 1933 | Titular See of Mididi | Established | ||
| 1933 | Titular See of Migirpa | Established | ||
| 1933 | Titular See of Mimiana | Established | ||
| 1933 | Titular See of Myrica | Established | ||
| 1933 | Titular See of Missua | Established | ||
| 1933 | Titular See of Misthia | Established | ||
| 1933 | Titular See of Mizigi | Established | ||
| 1933 | Titular See of Mnizus | Established | ||
| 1933 | Titular See of Moglaena | Established | ||
| 1933 | Titular See of Molicunza | Established | ||
| 1933 | Titular See of Mons in Mauretania | Established | ||
| 1933 | Titular See of Mons in Numidia | Established | ||
| 1933 | Titular See of Mopta | Established | ||
| 1933 | Titular See of Morosbisdus | Established | ||
| 1933 | Titular See of Mossyna | Established | ||
| 1933 | Titular See of Moxori | Established | ||
| 1933 | Titular See of Mostene | Established | ||
| 1933 | Titular See of Mozotcori | Established | ||
| 1933 | Titular See of Mulli | Established | ||
| 1933 | Titular See of Munatiana | Established | ||
| 1933 | Titular See of Mundinitza | Established | ||
| 1933 | Titular See of Municipa | Established | ||
| 1933 | Titular See of Murustaga | Established | ||
| 1933 | Titular See of Musbanda | Established | ||
| 1933 | Titular See of Muteci | Established | ||
| 1933 | Titular See of Mutugenna | Established | ||
| 1933 | Titular See of Mutia | Established | ||
| 1933 | Titular See of Muzuca in Byzacena | Established | ||
| 1933 | Titular See of Muzuca in Proconsulari | Established | ||
| 1933 | Titular See of Naissus | Established | ||
| 1933 | Titular See of Naraggara | Established | ||
| 1933 | Titular See of Naratcata | Established | ||
| 1933 | Titular See of Narona | Established | ||
| 1933 | Titular See of Nasai | Established | ||
| 1933 | Titular See of Nasala | Established | ||
| 1933 | Titular See of Nasbinca | Established | ||
| 1933 | Titular See of Naucratis | Established | ||
| 1933 | Titular See of Nationa | Established | ||
| 1933 | Titular See of Neapolis in Caria | Established | ||
| 1933 | Titular See of Neapolis in Cypro | Established | ||
| 1933 | Titular See of Neapolis in Isauria | Established | ||
| 1933 | Titular See of Neapolis in Palaestina | Established | ||
| 1933 | Titular See of Neapolis in Pisidia | Established | ||
| 1933 | Titular See of Neapolis in Proconsulari | Established | ||
| 1933 | Titular See of Nea Valentia | Established | ||
| 1933 | Titular See of Nephelis | Established | ||
| 1933 | Titular See of Neila | Established | ||
| 1933 | Titular See of Nepte | Established | ||
| 1933 | Titular See of Nicaea Parva | Established | ||
| 1933 | Titular See of Nicius | Established | ||
| 1933 | Titular See of Nicives | Established | ||
| 1933 | Titular See of Nicopolis ad Iaterum | Established | ||
| 1933 | Titular See of Nigizubi | Established | ||
| 1933 | Titular See of Nigrae Maiores | Established | ||
| 1933 | Titular See of Nysa in Asia | Established | ||
| 1933 | Titular See of Nisa in Lycia | Established | ||
| 1933 | Titular See of Noba | Established | ||
| 1933 | Titular See of Nona | Established | ||
| 1933 | Titular See of Nova | Established | ||
| 1933 | Titular See of Nova Barbara | Established | ||
| 1933 | Titular See of Nova Caesaris | Established | ||
| 1933 | Titular See of Nova Germania | Established | ||
| 1933 | Titular See of Novaliciana | Established | ||
| 1933 | Titular See of Nova Petra | Established | ||
| 1933 | Titular See of Nova Sinna | Established | ||
| 1933 | Titular See of Nova Sparsa | Established | ||
| 1933 | Titular See of Novae | Established | ||
| 1933 | Titular See of Novi | Established | ||
| 1933 | Titular See of Novica | Established | ||
| 1933 | Titular See of Numericus | Established | ||
| 1933 | Titular See of Numluli | Established | ||
| 1933 | Titular See of Oenoanda | Established | ||
| 1933 | Titular See of Oescus | Established | ||
| 1933 | Titular See of Oasis Magna | Established | ||
| 1933 | Titular See of Obbi | Established | ||
| 1933 | Titular See of Obori | Established | ||
| 1933 | Titular See of Oca | Established | ||
| 1933 | Titular See of Olbia | Established | ||
| 1933 | Titular See of Oliva | Established | ||
| 1933 | Titular See of Onchesmus | Established | ||
| 1933 | Titular See of Onuphis | Established | ||
| 1933 | Titular See of Opus | Established | ||
| 1933 | Titular See of Oppidum Novum | Established | ||
| 1933 | Titular See of Orymna | Established | ||
| 1933 | Titular See of Orisa | Established | ||
| 1933 | Titular See of Otrus | Established | ||
| 1933 | Titular See of Octaba | Established | ||
| 1933 | Titular See of Octabia | Established | ||
| 1933 | Titular See of Octava | Established | ||
| 1933 | Titular See of Ottocium | Established | ||
| 1933 | Titular See of Pachnemunis | Established | ||
| 1933 | Titular See of Pamphilus | Established | ||
| 1933 | Titular See of Panatoria | Established | ||
| 1933 | Titular See of Panephysis | Established | ||
| 1933 | Titular See of Panium | Established | ||
| 1933 | Titular See of Pappa | Established | ||
| 1933 | Titular See of Parembolae in Phoenicia | Established | ||
| 1933 | Titular See of Parembolae in Palaestina | Established | ||
| 1933 | Titular See of Parthenia | Established | ||
| 1933 | Titular See of Pauzera | Established | ||
| 1933 | Titular See of Pedachtoë | Established | ||
| 1933 | Titular See of Pederodiana | Established | ||
| 1933 | Titular See of Peltae | Established | ||
| 1933 | Titular See of Poemanenum | Established | ||
| 1933 | Titular See of Perdices | Established | ||
| 1933 | Titular See of Peritheorium | Established | ||
| 1933 | Titular See of Perperene | Established | ||
| 1933 | Titular See of Perta | Established | ||
| 1933 | Titular See of Pertusa | Established | ||
| 1933 | Titular See of Petra in Aegypto | Established | ||
| 1933 | Titular See of Petra in Lazica | Established | ||
| 1933 | Titular See of Pionia | Established | ||
| 1933 | Titular See of Pyrgos | Established | ||
| 1933 | Titular See of Pisita | Established | ||
| 1933 | Titular See of Pitanae | Established | ||
| 1933 | Titular See of Platamon | Established | ||
| 1933 | Titular See of Plotinopolis | Established | ||
| 1933 | Titular See of Quaestoriana | Established | ||
| 1933 | Titular See of Quiza | Established | ||
| 1933 | Titular See of Praecausa | Established | ||
| 1933 | Titular See of Praenetus | Established | ||
| 1933 | Titular See of Praesidium | Established | ||
| 1933 | Titular See of Prymnessus | Established | ||
| 1933 | Titular See of Privata | Established | ||
| 1933 | Titular See of Prostanna | Established | ||
| 1933 | Titular See of Pselchis | Established | ||
| 1933 | Titular See of Psibela | Established | ||
| 1933 | Titular See of Pudentiana | Established | ||
| 1933 | Titular See of Pulcheriopolis | Established | ||
| 1933 | Titular See of Puppi | Established | ||
| 1933 | Titular See of Putia in Byzacena | Established | ||
| 1933 | Titular See of Putia in Numidia | Established | ||
| 1933 | Titular See of Pednelissus {Peltinisus} | Established | ||
| 1933 | Titular See of Prisriana | Established | ||
| 1933 | Titular See of Rachlea | Established | ||
| 1933 | Titular See of Raphia | Established | ||
| 1933 | Titular See of Rhandus | Established | ||
| 1933 | Titular See of Rapidum | Established | ||
| 1933 | Titular See of Rhasus | Established | ||
| 1933 | Titular See of Regiana | Established | ||
| 1933 | Titular See of Regiae | Established | ||
| 1933 | Titular See of Reperi | Established | ||
| 1933 | Titular See of Respecta | Established | ||
| 1933 | Titular See of Ressiana | Established | ||
| 1933 | Titular See of Risinium | Established | ||
| 1933 | Titular See of Rhodopolis | Established | ||
| 1933 | Titular See of Rhaedestus | Established | ||
| 1933 | Titular See of Rhoga | Established | ||
| 1933 | Titular See of Rhoina | Established | ||
| 1933 | Titular See of Rotaria | Established | ||
| 1933 | Titular See of Rucuma | Established | ||
| 1933 | Titular See of Rufiniana | Established | ||
| 1933 | Titular See of Rusguniae | Established | ||
| 1933 | Titular See of Rusticiana | Established | ||
| 1933 | Titular See of Rusubbicari | Established | ||
| 1933 | Titular See of Rusibisir | Established | ||
| 1933 | Titular See of Rusuca | Established | ||
| 1933 | Titular See of Rusuccuru | Established | ||
| 1933 | Titular See of Saccaea | Established | ||
| 1933 | Titular See of Saia Maior | Established | ||
| 1933 | Titular See of Sais | Established | ||
| 1933 | Titular See of Salamias | Established | ||
| 1933 | Titular See of Sanavus | Established | ||
| 1933 | Titular See of Sarda | Established | ||
| 1933 | Titular See of Sariphaea | Established | ||
| 1933 | Titular See of Sassura | Established | ||
| 1933 | Titular See of Satafi | Established | ||
| 1933 | Titular See of Satafis | Established | ||
| 1933 | Titular See of Satala in Lydia | Established | ||
| 1933 | Titular See of Sbida | Established | ||
| 1933 | Titular See of Scampa | Established | ||
| 1933 | Titular See of Scardona | Established | ||
| 1933 | Titular See of Scarphea | Established | ||
| 1933 | Titular See of Scebatiana | Established | ||
| 1933 | Titular See of Scepsis | Established | ||
| 1933 | Titular See of Schedia | Established | ||
| 1933 | Titular See of Sciathus | Established | ||
| 1933 | Titular See of Scyrus | Established | ||
| 1933 | Titular See of Scopelus in Haemimonto | Established | ||
| 1933 | Titular See of Scopelus in Thessalia | Established | ||
| 1933 | Titular See of Scutarium | Established | ||
| 1933 | Titular See of Sebarga | Established | ||
| 1933 | Titular See of Sebastopolis in Abasgia | Established | ||
| 1933 | Titular See of Sebela | Established | ||
| 1933 | Titular See of Sebennytus | Established | ||
| 1933 | Titular See of Segermes | Established | ||
| 1933 | Titular See of Selemselae | Established | ||
| 1933 | Titular See of Selendeta | Established | ||
| 1933 | Titular See of Seleucia Ferrea | Established | ||
| 1933 | Titular See of Seleuciana | Established | ||
| 1933 | Titular See of Seleucobelus | Established | ||
| 1933 | Titular See of Semina | Established | ||
| 1933 | Titular See of Semnea | Established | ||
| 1933 | Titular See of Serbia | Established | ||
| 1933 | Titular See of Sereddeli | Established | ||
| 1933 | Titular See of Sergentza | Established | ||
| 1933 | Titular See of Serigene | Established | ||
| 1933 | Titular See of Serta | Established | ||
| 1933 | Titular See of Sertei | Established | ||
| 1933 | Titular See of Saesina | Established | ||
| 1933 | Titular See of Sesta | Established | ||
| 1933 | Titular See of Setea | Established | ||
| 1933 | Titular See of Sethroë | Established | ||
| 1933 | Titular See of Septimunicia | Established | ||
| 1933 | Titular See of Severiana | Established | ||
| 1933 | Titular See of Sfasferia | Established | ||
| 1933 | Titular See of Sibidunda | Established | ||
| 1933 | Titular See of Siblia | Established | ||
| 1933 | Titular See of Syca | Established | ||
| 1933 | Titular See of Siccenna | Established | ||
| 1933 | Titular See of Siccesi | Established | ||
| 1933 | Titular See of Sicilibba | Established | ||
| 1933 | Titular See of Sicyon | Established | ||
| 1933 | Titular See of Sycomazon | Established | ||
| 1933 | Titular See of Syedra | Established | ||
| 1933 | Titular See of Silli | Established | ||
| 1933 | Titular See of Simidicca | Established | ||
| 1933 | Titular See of Simingi | Established | ||
| 1933 | Titular See of Siminina | Established | ||
| 1933 | Titular See of Simitthu | Established | ||
| 1933 | Titular See of Synnada in Mauretania | Established | ||
| 1933 | Titular See of Sistroniana | Established | ||
| 1933 | Titular See of Sita | Established | ||
| 1933 | Titular See of Socia | Established | ||
| 1933 | Titular See of Soldaia | Established | ||
| 1933 | Titular See of Sozusa in Libya | Established | ||
| 1933 | Titular See of Stagnum | Established | ||
| 1933 | Titular See of Stagoi | Established | ||
| 1933 | Titular See of Stephaniacum | Established | ||
| 1933 | Titular See of Stectorium | Established | ||
| 1933 | Titular See of Strongyle | Established | ||
| 1933 | Titular See of Strumnitza | Established | ||
| 1933 | Titular See of Suacia | Established | ||
| 1933 | Titular See of Suas | Established | ||
| 1933 | Titular See of Suava | Established | ||
| 1933 | Titular See of Subbar | Established | ||
| 1933 | Titular See of Subrita | Established | ||
| 1933 | Titular See of Sucarda | Established | ||
| 1933 | Titular See of Succuba | Established | ||
| 1933 | Titular See of Sufar | Established | ||
| 1933 | Titular See of Sufasar | Established | ||
| 1933 | Titular See of Sufes | Established | ||
| 1933 | Titular See of Sugdaea | Established | ||
| 1933 | Titular See of Suliana | Established | ||
| 1933 | Titular See of Sullectum | Established | ||
| 1933 | Titular See of Summa | Established | ||
| 1933 | Titular See of Summula | Established | ||
| 1933 | Titular See of Surista | Established | ||
| 1933 | Titular See of Sutunurca | Established | ||
| 1933 | Titular See of Tabaicara | Established | ||
| 1933 | Titular See of Tabalta | Established | ||
| 1933 | Titular See of Tabla | Established | ||
| 1933 | Titular See of Taborenta | Established | ||
| 1933 | Titular See of Tabuda | Established | ||
| 1933 | Titular See of Tabunia | Established | ||
| 1933 | Titular See of Tacarata | Established | ||
| 1933 | Titular See of Thagamuta | Established | ||
| 1933 | Titular See of Tagarata | Established | ||
| 1933 | Titular See of Tagarbala | Established | ||
| 1933 | Titular See of Tagaria | Established | ||
| 1933 | Titular See of Taium | Established | ||
| 1933 | Titular See of Thala | Established | ||
| 1933 | Titular See of Talaptula | Established | ||
| 1933 | Titular See of Tamada | Established | ||
| 1933 | Titular See of Tamagrista | Established | ||
| 1933 | Titular See of Tamallula | Established | ||
| 1933 | Titular See of Tamalluma | Established | ||
| 1933 | Titular See of Tamascani | Established | ||
| 1933 | Titular See of Tamata | Established | ||
| 1933 | Titular See of Tamazuca | Established | ||
| 1933 | Titular See of Tambeae | Established | ||
| 1933 | Titular See of Thamugadi | Established | ||
| 1933 | Titular See of Tanaramusa | Established | ||
| 1933 | Titular See of Tanudaia | Established | ||
| 1933 | Titular See of Taparura | Established | ||
| 1933 | Titular See of Tapasa | Established | ||
| 1933 | Titular See of Taraqua | Established | ||
| 1933 | Titular See of Tarasa in Byzacena | Established | ||
| 1933 | Titular See of Tarasa in Numidia | Established | ||
| 1933 | Titular See of Tasaccora | Established | ||
| 1933 | Titular See of Thasbalta | Established | ||
| 1933 | Titular See of Tatilti | Established | ||
| 1933 | Titular See of Taua | Established | ||
| 1933 | Titular See of Teglata in Numidia | Established | ||
| 1933 | Titular See of Teglata in Proconsulari | Established | ||
| 1933 | Titular See of Tela | Established | ||
| 1933 | Titular See of Tell-Mahrę | Established | ||
| 1933 | Titular See of Temenothyrae | Established | ||
| 1933 | Titular See of Temuniana | Established | ||
| 1933 | Titular See of Tepelta | Established | ||
| 1933 | Titular See of Tetci | Established | ||
| 1933 | Titular See of Theudalis | Established | ||
| 1933 | Titular See of Theuzi | Established | ||
| 1933 | Titular See of Thiava | Established | ||
| 1933 | Titular See of Thibica | Established | ||
| 1933 | Titular See of Thibilis | Established | ||
| 1933 | Titular See of Thibiuca | Established | ||
| 1933 | Titular See of Thibuzabetum | Established | ||
| 1933 | Titular See of Tigava | Established | ||
| 1933 | Titular See of Tigamibena | Established | ||
| 1933 | Titular See of Thiges | Established | ||
| 1933 | Titular See of Tigias | Established | ||
| 1933 | Titular See of Tigillava | Established | ||
| 1933 | Titular See of Tigimma | Established | ||
| 1933 | Titular See of Tigisi in Mauretania | Established | ||
| 1933 | Titular See of Tigisi in Numidia | Established | ||
| 1933 | Titular See of Tiguala | Established | ||
| 1933 | Titular See of Tymandus | Established | ||
| 1933 | Titular See of Timici | Established | ||
| 1933 | Titular See of Thimida | Established | ||
| 1933 | Titular See of Timidana | Established | ||
| 1933 | Titular See of Thimida Regia | Established | ||
| 1933 | Titular See of Tingaria | Established | ||
| 1933 | Titular See of Thinis | Established | ||
| 1933 | Titular See of Thinisa in Numidia | Established | ||
| 1933 | Titular See of Tinisa in Proconsulari | Established | ||
| 1933 | Titular See of Tinista | Established | ||
| 1933 | Titular See of Tyriaeum | Established | ||
| 1933 | Titular See of Ternobus | Established | ||
| 1933 | Titular See of Thysdrus | Established | ||
| 1933 | Titular See of Tisedi | Established | ||
| 1933 | Titular See of Thisiduo | Established | ||
| 1933 | Titular See of Tisili | Established | ||
| 1933 | Titular See of Tityassus | Established | ||
| 1933 | Titular See of Tituli in Numidia | Established | ||
| 1933 | Titular See of Tituli in Proconsulari | Established | ||
| 1933 | Titular See of Thizica | Established | ||
| 1933 | Titular See of Thois | Established | ||
| 1933 | Titular See of Turrisblanda | Established | ||
| 1933 | Titular See of Turris in Mauretania | Established | ||
| 1933 | Titular See of Turris in Proconsulari | Established | ||
| 1933 | Titular See of Turris Tamalleni | Established | ||
| 1933 | Titular See of Turris Rotunda | Established | ||
| 1933 | Titular See of Turres Concordiae | Established | ||
| 1933 | Titular See of Turres Ammeniae | Established | ||
| 1933 | Titular See of Turres in Byzacena | Established | ||
| 1933 | Titular See of Turres in Numidia | Established | ||
| 1933 | Titular See of Tracula | Established | ||
| 1933 | Titular See of Tralles in Lydia | Established | ||
| 1933 | Titular See of Transmarisca | Established | ||
| 1933 | Titular See of Tragurium | Established | ||
| 1933 | Titular See of Trebenna | Established | ||
| 1933 | Titular See of Troezene | Established | ||
| 1933 | Titular See of Trofimiana | Established | ||
| 1933 | Titular See of Tubernuca | Established | ||
| 1933 | Titular See of Tubia | Established | ||
| 1933 | Titular See of Tubyza | Established | ||
| 1933 | Titular See of Tubulbaca | Established | ||
| 1933 | Titular See of Thuburbo Maius | Established | ||
| 1933 | Titular See of Thuburnica | Established | ||
| 1933 | Titular See of Thubursicum | Established | ||
| 1933 | Titular See of Thubursicum-Bure | Established | ||
| 1933 | Titular See of Tubusuptu | Established | ||
| 1933 | Titular See of Thuccabora | Established | ||
| 1933 | Titular See of Thucca in Mauretania | Established | ||
| 1933 | Titular See of Thucca in Numidia | Established | ||
| 1933 | Titular See of Thucca Terebenthina | Established | ||
| 1933 | Titular See of Tulana | Established | ||
| 1933 | Titular See of Tullia | Established | ||
| 1933 | Titular See of Tunes | Established | ||
| 1933 | Titular See of Thunigaba | Established | ||
| 1933 | Titular See of Tunnuna | Established | ||
| 1933 | Titular See of Thunudruma | Established | ||
| 1933 | Titular See of Thunusuda | Established | ||
| 1933 | Titular See of Tusuros | Established | ||
| 1933 | Titular See of Tzernicus | Established | ||
| 1933 | Titular See of Ulcinium | Established | ||
| 1933 | Titular See of Ubaba | Established | ||
| 1933 | Titular See of Uchi Maius | Established | ||
| 1933 | Titular See of Ucres | Established | ||
| 1933 | Titular See of Ulpiana | Established | ||
| 1933 | Titular See of Ululi | Established | ||
| 1933 | Titular See of Unizibira | Established | ||
| 1933 | Titular See of Uppenna | Established | ||
| 1933 | Titular See of Urima | Established | ||
| 1933 | Titular See of Urusi | Established | ||
| 1933 | Titular See of Usinaza | Established | ||
| 1933 | Titular See of Utimma | Established | ||
| 1933 | Titular See of Utimmira | Established | ||
| 1933 | Titular See of Vadesi | Established | ||
| 1933 | Titular See of Vagada | Established | ||
| 1933 | Titular See of Vagal | Established | ||
| 1933 | Titular See of Vageata | Established | ||
| 1933 | Titular See of Vagrauta | Established | ||
| 1933 | Titular See of Valentiniana | Established | ||
| 1933 | Titular See of Valentia | Established | ||
| 1933 | Titular See of Vamalla | Established | ||
| 1933 | Titular See of Vanariona | Established | ||
| 1933 | Titular See of Vannida | Established | ||
| 1933 | Titular See of Vardimissa | Established | ||
| 1933 | Titular See of Vartana | Established | ||
| 1933 | Titular See of Vassinassa | Established | ||
| 1933 | Titular See of Vazari-Didda | Established | ||
| 1933 | Titular See of Vazi-Sarra | Established | ||
| 1933 | Titular See of Vegesela in Byzacena | Established | ||
| 1933 | Titular See of Vegesela in Numidia | Established | ||
| 1933 | Titular See of Velebusdus | Established | ||
| 1933 | Titular See of Velefi | Established | ||
| 1933 | Titular See of Velicia | Established | ||
| 1933 | Titular See of Verrona | Established | ||
| 1933 | Titular See of Vescera | Established | ||
| 1933 | Titular See of Vibiana | Established | ||
| 1933 | Titular See of Vicus Turris | Established | ||
| 1933 | Titular See of Vicus Aterii | Established | ||
| 1933 | Titular See of Vicus Augusti | Established | ||
| 1933 | Titular See of Vicus Caesaris | Established | ||
| 1933 | Titular See of Vicus Pacati | Established | ||
| 1933 | Titular See of Villa Regis | Established | ||
| 1933 | Titular See of Villamagna in Proconsulari | Established | ||
| 1933 | Titular See of Villamagna in Tripolitana | Established | ||
| 1933 | Titular See of Villa Nova | Established | ||
| 1933 | Titular See of Vina | Established | ||
| 1933 | Titular See of Vissalsa | Established | ||
| 1933 | Titular See of Vita | Established | ||
| 1933 | Titular See of Victoriana | Established | ||
| 1933 | Titular See of Voli | Established | ||
| 1933 | Titular See of Voncaria | Established | ||
| 1933 | Titular See of Voncariana | Established | ||
| 1933 | Titular See of Vulturia | Established | ||
| 1933 | Titular See of Xanthe | Established | ||
| 1933 | Titular See of Xanthus | Established | ||
| 1933 | Titular See of Xios | Established | ||
| 1933 | Titular See of Zaba | Established | ||
| 1933 | Titular See of Zagylis | Established | ||
| 1933 | Titular See of Zaliche | Established | ||
| 1933 | Titular See of Zallata | Established | ||
| 1933 | Titular See of Zama Minor | Established | ||
| 1933 | Titular See of Zaratovium | Established | ||
| 1933 | Titular See of Zarna | Established | ||
| 1933 | Titular See of Zarzela | Established | ||
| 1933 | Titular See of Zella | Established | ||
| 1933 | Titular See of Zenobias | Established | ||
| 1933 | Titular See of Zeugma in Mesopotamia | Established | ||
| 1933 | Titular See of Zica | Established | ||
| 1933 | Titular See of Zygana | Established | ||
| 1933 | Titular See of Zygris | Established | ||
| 1933 | Titular See of Zorava | Established | ||
| 1933 | Titular See of Zorolus | Established | ||
| 1933 | Titular See of Zucchabar | Established | ||
| 1934 | Archdiocese of Bombay, India (Northern and central part of Quierat, from the river Mahi to the region of Sind, the whole peninsula of Kathiavar and the island of Gutch) | Territory Lost | Mission "Sui Iuris" of Ahmedabad, India | Erected |
| 1934 | Territorial Abbey of Nossa Senhora do Monserrate do Rio de Janeiro, Brazil | Territory Lost | Apostolic Administration of Rio Branco, Brazil | Erected |
| 1935 | Ordine dei Frati penitenti di Gesů Nazareno | Territory Added | ||
| 1936 | Apostolic Administration of Srpski Banat, Serbia | Name Changed | Apostolic Administration of Jugoslavenska Banat, Serbia | Name Changed |
| 1937 | Delegation to Mesopotamia, Kurdistan, and Lesser Armenia, Iraq | Name Changed | Delegation to Iraq | Name Changed |
| 1939 | Glenmary Home Missioners | Founded | ||
| 1939 | Nunciature to Slovakia | Established | ||
| 1939 | Titular See of Tharona | Territory Added | ||
| 1939 | Secular Institute of Pius X | Founded | ||
| 1939 | Apostolic Administration of Mérk, Hungary | Territory Added | ||
| 1941 | Society of Saint Cajetan | Founded | ||
| 1941 | Apostolic Administration of Lemkowszczyzna (Ukrainian), Poland | Elevated | Apostolic Exarchate of Lemkowszczyzna (Ukrainian), Poland | Elevated |
| 1941 | Apostolic Administration of Debreczen, Hungary | Territory Added | ||
| 1941 | Regnum Christi | Founded | ||
| 1942 | Nunciature to Finland | Established | ||
| 1944 | Misioneros de la Natividad de María | Founded | ||
| 1946 | Territorial Abbey of Saint-Maurice et Saint-Maur de Clervaux {Santi Maurizio e Mauro di Clervaux}, Luxembourg | Territory Added | ||
| 1946 | Delegation to Italian East Africa, Ethiopia | Name Changed | Delegation to Ethiopia | Name Changed |
| 1947 | Prefecture Apostolic of Kagoshima, Japan | Territory Lost | Apostolic Administration of Okinawa and the Southern Islands (Ryukyus), Japan | Erected |
| 1947 | Military Ordinariate of Poland, Military | Territory Added | ||
| 1948 | Delegation to Persia | Name Changed | Delegation to Iran | Name Changed |
| 1950 | Priests of Notre Dame de Vie | Founded | ||
| 1950 | Sacerdoti del Sacro Cuore di Gesů | Founded | ||
| 1952 | Servants of the Holy Paraclete | Founded | ||
| 1953 | Mission "Sui Iuris" of Siria e Cilicia, Syria | Territory Added | ||
| 1953 | Delegation to Palestine, TransJordan, and Cyprus | Name Changed | Delegation to Jerusalem, Palestine, Jordan, and Cyprus | Name Changed |
| 1953 | Sacerdoti Missionari della Regalitŕ di Cristo | Founded | ||
| 1954 | Missionaries of the Divine Redeemer | Founded | ||
| 1956 | Apostolic Administration of Innsbruck, Austria | Name Changed | Apostolic Administration of Innsbruck-Feldkirch, Austria | Name Changed |
| 1956 | Clerical Society of the Missionaries of the Holy Apostles | Founded | ||
| 1956 | Little Brothers of the Gospel | Founded | ||
| 1957 | Delegation to Jerusalem, Palestine, Jordan, and Cyprus | Name Changed | Delegation to Jerusalem and Palestine (Israel, Jordan, Cyprus), Palestine | Name Changed |
| 1958 | Congregation of Saint John the Baptist Precursor | Founded | ||
| 1958 | Institute Voluntas Dei | Founded | ||
| 1963 | Archdiocese of Luluabourg, Congo (Dem. Rep.) | Erected | ||
| 1965 | Mission Society of the Philippines | Founded | ||
| 1965 | Delegation to Central-Western Africa | Established | ||
| 1965 | Delegation to Jerusalem and Palestine (Israel, Jordan, Cyprus), Palestine | Name Changed | Delegation to Jerusalem and Palestine | Name Changed |
| 1966 | Congregation of Saint Michael the Archangel | Decretum Laudis | ||
| 1966 | Order of Imitation of Christ | Decretum Laudis | ||
| 1966 | Delegation to Central-Western Africa | Established | ||
| 1966 | Titular See of Methamaucum | Established | ||
| 1966 | Titular See of Nomentum | Established | ||
| 1967 | Congregation of the Affairs of Religious, Roman Curia | Name Changed | Congregation for Religious and Secular Institutes, Roman Curia | Name Changed |
| 1967 | Congregation of Seminaries and Universities, Roman Curia | Name Changed | Congregation of Catholic Education, Roman Curia | Name Changed |
| 1967 | Congregation of Ceremonies, Roman Curia | Territory Added | ||
| 1967 | Congregation of the Basilica of St. Peter, Roman Curia | Name Changed | Fabric of St. Peter, Roman Curia | Name Changed |
| 1967 | Delegation to Central-Western Africa | Established | ||
| 1968 | Canons Regular of the Congregation of Saint Victor | Founded | ||
| 1968 | Order of Hermits of St. Augustine | Name Changed | Order of St. Augustine | Name Changed |
| 1968 | Titular See of Methamaucum | Territory Added | ||
| 1968 | Titular See of Scala | Established | ||
| 1968 | Titular See of Dolia | Established | ||
| 1968 | Titular See of Sorres | Established | ||
| 1968 | Titular See of Suelli | Established | ||
| 1968 | Titular See of Caere | Established | ||
| 1968 | Titular See of Alexanum | Established | ||
| 1968 | Titular See of Labicum | Established | ||
| 1968 | Titular See of Santa Giusta | Established | ||
| 1968 | Titular See of Vibo | Established | ||
| 1968 | Titular See of Vico Equense | Established | ||
| 1968 | Titular See of Cures Sabinorum | Established | ||
| 1968 | Titular See of Pumentum | Established | ||
| 1968 | Titular See of Potentia in Piceno | Established | ||
| 1968 | Titular See of Tiburnia | Established | ||
| 1968 | Titular See of Aquaviva | Established | ||
| 1968 | Titular See of Aguntum | Established | ||
| 1968 | Titular See of Altinum | Established | ||
| 1968 | Titular See of Bellicastrum | Established | ||
| 1968 | Titular See of Bettonium | Established | ||
| 1968 | Titular See of Bitettum | Established | ||
| 1968 | Titular See of Caprulae | Established | ||
| 1968 | Titular See of Capreae | Established | ||
| 1968 | Titular See of Carinola | Established | ||
| 1968 | Titular See of Castrum | Established | ||
| 1968 | Titular See of Castro di Puglia | Established | ||
| 1968 | Titular See of Castro di Sardegna | Established | ||
| 1968 | Titular See of Hyccarum (Hyccara) | Established | ||
| 1968 | Titular See of Mevania | Established | ||
| 1968 | Titular See of Polymartium | Established | ||
| 1968 | Titular See of Antium | Established | ||
| 1968 | Titular See of Aquileia | Established | ||
| 1968 | Titular See of Acelum | Established | ||
| 1968 | Titular See of Cittŕ Ducale | Established | ||
| 1968 | Titular See of Civitate | Established | ||
| 1968 | Titular See of Atella | Established | ||
| 1968 | Titular See of Dragonara | Established | ||
| 1968 | Titular See of Fiorentino | Established | ||
| 1968 | Titular See of Fundi | Established | ||
| 1968 | Titular See of Forum Popilii | Established | ||
| 1968 | Titular See of Gradum | Established | ||
| 1968 | Titular See of Guardialfiera | Established | ||
| 1968 | Titular See of Isola | Established | ||
| 1968 | Titular See of Lauriacum | Established | ||
| 1968 | Titular See of Lavellum | Established | ||
| 1968 | Titular See of Leontium | Established | ||
| 1968 | Titular See of Lesina | Established | ||
| 1968 | Titular See of Litterae | Established | ||
| 1968 | Titular See of Martirano | Established | ||
| 1968 | Titular See of Massa Lubrense | Established | ||
| 1968 | Titular See of Minervium | Established | ||
| 1968 | Titular See of Minora | Established | ||
| 1968 | Titular See of Minturnae | Established | ||
| 1968 | Titular See of Montecorvino | Established | ||
| 1968 | Titular See of Montemarano | Established | ||
| 1968 | Titular See of Monteverde | Established | ||
| 1968 | Titular See of Motula | Established | ||
| 1968 | Titular See of Forum Novum | Established | ||
| 1968 | Titular See of Hispellum | Established | ||
| 1968 | Titular See of Opitergium | Established | ||
| 1968 | Titular See of Oppidum Consilinum | Established | ||
| 1968 | Titular See of Ploaghe | Established | ||
| 1968 | Titular See of Rebellum | Established | ||
| 1968 | Titular See of San Leone | Established | ||
| 1968 | Titular See of Satrianum | Established | ||
| 1968 | Titular See of Tauromenium | Established | ||
| 1968 | Titular See of Taurianum | Established | ||
| 1968 | Titular See of Termae Himerae | Established | ||
| 1968 | Titular See of Urbs Salvia | Established | ||
| 1968 | Titular See of Virunum | Established | ||
| 1968 | Titular See of Vulturaria | Established | ||
| 1968 | Titular See of Polinianum | Established | ||
| 1968 | Titular See of Skálholt | Established | ||
| 1968 | Titular See of Tyndaris | Established | ||
| 1968 | Titular See of Torcello | Established | ||
| 1968 | Titular See of Trebia | Established | ||
| 1968 | Titular See of Trevico | Established | ||
| 1968 | Titular See of Troyna | Established | ||
| 1969 | Congregation of (Sacred) Rites, Roman Curia | Name Changed | Congregation for the Causes of Saints, Roman Curia | Name Changed |
| 1969 | Canons Regular of the Mother of God | Founded | ||
| 1969 | Titular See of Abula | Established | ||
| 1969 | Titular See of Acci | Established | ||
| 1969 | Titular See of Aquae Flaviae | Established | ||
| 1969 | Titular See of Alava | Established | ||
| 1969 | Titular See of Aliezira | Established | ||
| 1969 | Titular See of Amaia | Established | ||
| 1969 | Titular See of Arcavica | Established | ||
| 1969 | Titular See of Árd Carna | Established | ||
| 1969 | Titular See of Árd Mór | Established | ||
| 1969 | Titular See of Árd Sratha | Established | ||
| 1969 | Titular See of Astigi | Established | ||
| 1969 | Titular See of Ath Truim | Established | ||
| 1969 | Titular See of Auca | Established | ||
| 1969 | Titular See of Aemona | Established | ||
| 1969 | Titular See of Assidona | Established | ||
| 1969 | Titular See of Basti | Established | ||
| 1969 | Titular See of Beatia | Established | ||
| 1969 | Titular See of Beverlacum | Established | ||
| 1969 | Titular See of Bigastro | Established | ||
| 1969 | Titular See of Bisuldino | Established | ||
| 1969 | Titular See of Britonia | Established | ||
| 1969 | Titular See of Caliabria | Established | ||
| 1969 | Titular See of Castello | Established | ||
| 1969 | Titular See of Castulo | Established | ||
| 1969 | Titular See of Ceanannus Mór | Established | ||
| 1969 | Titular See of Cell Ausaille | Established | ||
| 1969 | Titular See of Cluain Iraird | Established | ||
| 1969 | Titular See of Cuncacestre | Established | ||
| 1969 | Titular See of Cunga Féichin | Established | ||
| 1969 | Titular See of Daimlaig | Established | ||
| 1969 | Titular See of Diano | Established | ||
| 1969 | Titular See of Domnach Sechnaill | Established | ||
| 1969 | Titular See of Eanach Dúin | Established | ||
| 1969 | Titular See of Egabro | Established | ||
| 1969 | Titular See of Egara | Established | ||
| 1969 | Titular See of Elepla | Established | ||
| 1969 | Titular See of Elicroca | Established | ||
| 1969 | Titular See of Elmhama | Established | ||
| 1969 | Titular See of Elo | Established | ||
| 1969 | Titular See of Elvas | Established | ||
| 1969 | Titular See of Emerita Augusta | Established | ||
| 1969 | Titular See of Falerone | Established | ||
| 1969 | Titular See of Fuerteventura | Established | ||
| 1969 | Titular See of Glastonia | Established | ||
| 1969 | Titular See of Glenndálocha | Established | ||
| 1969 | Titular See of Illiberi | Established | ||
| 1969 | Titular See of Illici | Established | ||
| 1969 | Titular See of Inis Cathaig | Established | ||
| 1969 | Titular See of Ipagro | Established | ||
| 1969 | Titular See of Iria Flavia | Established | ||
| 1969 | Titular See of Italica | Established | ||
| 1969 | Titular See of Lindisfarna | Established | ||
| 1969 | Titular See of Lugmad | Established | ||
| 1969 | Titular See of Mageó | Established | ||
| 1969 | Titular See of Magnetum | Established | ||
| 1969 | Titular See of Mentesa | Established | ||
| 1969 | Titular See of Naiera | Established | ||
| 1969 | Titular See of Neoportus | Established | ||
| 1969 | Titular See of Oreto | Established | ||
| 1969 | Titular See of Othona | Established | ||
| 1969 | Titular See of Petina | Established | ||
| 1969 | Titular See of Penafiel | Established | ||
| 1969 | Titular See of Pinhel | Established | ||
| 1969 | Titular See of Ramsbiria | Established | ||
| 1969 | Titular See of Ros Cré | Established | ||
| 1969 | Titular See of Rota | Established | ||
| 1969 | Titular See of Rotdon | Established | ||
| 1969 | Titular See of Rubicon | Established | ||
| 1969 | Titular See of Saetabis | Established | ||
| 1969 | Titular See of Sanctus Germanus | Established | ||
| 1969 | Titular See of Sasabe | Established | ||
| 1969 | Titular See of Segia | Established | ||
| 1969 | Titular See of Segisama | Established | ||
| 1969 | Titular See of Selsea | Established | ||
| 1969 | Titular See of Sidnacestre | Established | ||
| 1969 | Titular See of Slebte | Established | ||
| 1969 | Titular See of Strongoli | Established | ||
| 1969 | Titular See of Telde | Established | ||
| 1969 | Titular See of Tucci | Established | ||
| 1969 | Titular See of Umbriatico | Established | ||
| 1969 | Titular See of Urci | Established | ||
| 1969 | Titular See of Ursona | Established | ||
| 1969 | Titular See of Valabria | Established | ||
| 1969 | Titular See of Valeria | Established | ||
| 1969 | Titular See of Valliposita | Established | ||
| 1969 | Titular See of Vergi | Established | ||
| 1969 | Mission "Sui Iuris" of Mossul, Iraq | Suppressed | Archdiocese of Baghdad, Iraq | Territory Added |
| 1969 | Titular See of Tortibulum | Established | ||
| 1970 | Servants of the Holy Paraclete | Decretum Laudis | ||
| 1970 | Titular See of Tharros | Established | ||
| 1970 | Office of Pontifical Ceremonies, Roman Curia | Name Changed | Office of Liturgical Celebrations of the Supreme Pontiff, Roman Curia | Name Changed |
| 1970 | Titular See of Grumentum | Established | ||
| 1970 | Servi della Divina Misericordia | Founded | ||
| 1971 | Sodalicio de Vida Cristiana | Founded | ||
| 1971 | Delegation to Eastern Africa | Territory Added | ||
| 1971 | Delegation to Western Africa | Established | ||
| 1971 | Nunciature to Egypt, Arab Republic of (to Nunciature) | Elevated | ||
| 1972 | Archdiocese of Sivas {Sebaste} (and Tokat {Toqat}) (Armenian), Turkey | Territory Added | ||
| 1972 | Titular See of Dumium | Established | ||
| 1972 | Titular See of Amida degli Armeni | Established | ||
| 1972 | Titular See of Garin degli Armeni | Established | ||
| 1972 | Titular See of Kharput degli Armeni | Established | ||
| 1972 | Titular See of Marasc degli Armeni | Established | ||
| 1972 | Titular See of Mardin degli Armeni | Established | ||
| 1972 | Titular See of Mardin dei Siri | Established | ||
| 1972 | Titular See of Mardin dei Caldei | Established | ||
| 1972 | Titular See of Melitene degli Armeni | Established | ||
| 1972 | Titular See of Sebaste degli Armeni | Established | ||
| 1972 | Titular See of Ancyra degli Armeni | Established | ||
| 1972 | Titular See of Artvin degli Armeni | Established | ||
| 1972 | Titular See of Caesarea in Cappadocia degli Armeni | Established | ||
| 1972 | Titular See of Mush degli Armeni | Established | ||
| 1972 | Titular See of Prusa degli Armeni | Established | ||
| 1972 | Titular See of Tokat degli Armeni | Established | ||
| 1972 | Titular See of Trapezus degli Armeni | Established | ||
| 1972 | Titular See of Adana degli Armeni | Established | ||
| 1973 | Pontifical Committee for the Family, Roman Curia | Established | ||
| 1974 | Titular See of Cululi | Territory Added | ||
| 1976 | Delegation to Northern Africa | Territory Added | ||
| 1979 | Fraternity of Saint Vincent Ferrer | Founded | ||
| 1979 | Mission "Sui Iuris" of Baghdad, Iraq | Suppressed | Archdiocese of Baghdad, Iraq | Territory Added |
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