| Year | From | To | ||
|---|---|---|---|---|
| 1388 | Diocese of Asti, Italy | Territory Lost | Diocese of Mondovi, Italy | Erected |
| 1506 | Diocese of Ampurias, Italy
Diocese of Civita (Tempio), Italy | United | Diocese of Ampurias e Civita, Italy | United |
| 1592 | Diocese of Colle di Val d’Elsa, Italy | Erected | ||
| 1839 | Xaverian Brothers | Founded | ||
| 1883 | Diocese of Galway, Ireland
Diocese of Kilmacduagh, Ireland Diocese of Kilfenora, Ireland | United | Diocese of Galway and Kilmacduagh, Ireland | United |
| 1925 | Missionary Society of St. Columban | Approbation | ||
| 1927 | Diocese of Catanzaro, Italy | Elevated | Archdiocese of Catanzaro, Italy | Elevated |
| 1930 | Archdiocese of Bucarest {Bucureşti}, Romania (became a Metropolitan) | Elevated | ||
| 1930 | Archdiocese of Făgăraş şi Alba Iulia (Romanian), Romania (150 parishes)
Diocese of Gherla, Armenopoli, Szamos-Ujvár (Romanian), Romania | Name Changed | Diocese of Cluj-Gherla (Claudiopoli-Armenopoli) (Romanian), Romania | Name Changed |
| 1930 | Archdiocese of Făgăraş şi Alba Iulia (Romanian), Romania (Boian)
Diocese of Gherla, Armenopoli, Szamos-Ujvár (Romanian), Romania (169 parishes) Diocese of Hajdúdorog (Hungarian), Hungary (10 parishes) Eparchy of Mukachevo (Munkács) (Ruthenian), Ukraine (11 parishes) Diocese of Oradea Mare {Gran Varadino} (Romanian), Romania (31 parishes) Eparchy of Stanislaviv (Ukrainian), Ukraine (17 parishes) Apostolic Administration of Târgul-Siret (Ruthenian), Romania | Territory Lost | Diocese of Maramureş (Romanian), Romania | Erected |
| 1930 | Apostolic Administration of Timişoara, Romania | Elevated | Diocese of Timişoara, Romania | Elevated |
| 1930 | Ordinariate of Romania (Armenian) | Erected | ||
| 1930 | Diocese of Oradea Mare {Gran Varadino, Nagyvárad}, Romania
Diocese of Satu Mare {Szatmár}, Romania | United | Diocese of Oradea Mare {Gran Varadino, Nagyvárad} and Satu Mare {Szatmár}, Romania | United |
| 1930 | Archdiocese of Lviv, Ukraine (Bucovina) | Territory Lost | Diocese of Iaşi, Romania | Territory Added |
| 1930 | Diocese of Transilvania, Erdély, Siebenbürgen, Romania (from Kalocsa) | Metropolitan Changed | ||
| 1930 | Diocese of Iaşi, Romania (from Immediately Subject) | Metropolitan Changed | ||
| 1930 | Diocese of Oradea Mare {Gran Varadino} (Romanian), Romania (19 parishes) | Territory Lost | Diocese of Lugoj (Romanian), Romania | Territory Added |
| 1930 | Diocese of Gherla, Armenopoli, Szamos-Ujvár (Romanian), Romania (82 parishes) | Territory Lost | Diocese of Oradea Mare {Gran Varadino} (Romanian), Romania | Territory Added |
| 1937 | Diocese of Nocera Umbra-Gualdo Tadino, Italy (S. Helena di Annifo) | Territory Lost | Diocese of Foligno, Italy | Territory Added |
| 1960 | Secretariat for Promoting Christian Unity, Roman Curia | Established | ||
| 1961 | Archdiocese of Nueva Segovia, Philippines | Territory Lost | Diocese of Laoag, Philippines | Erected |
| 1962 | Archdiocese of Arequipa, Peru (Castilla and Camanŕ)
Territorial Prelature of Caravelí, Peru (Unión and Condesuyo) | Territory Lost | Territorial Prelature of Chuquibamba, Peru | Erected |
| 1962 | Diocese of Buéa, Cameroon (from Onitsha to Yaoundé) | Metropolitan Changed | ||
| 1967 | Diocese of Iquique, Chile (Quillagua) | Territory Lost | Diocese of Antofagasta, Chile | Territory Added |
| 1970 | Prefecture Apostolic of Benares-Gorakhpur, India | Elevated | Diocese of Banaras, India | Elevated |
| 1971 | Archdiocese of Ranchi, India (Hazaribagh and Palamau) | Territory Lost | Diocese of Daltonganj, India | Erected |
| 1975 | Diocese of Ambanja, Madagascar (Comores islands) | Territory Lost | Apostolic Administration of Comores | Erected |
| 1978 | Archdiocese of Asunción, Paraguay (Departamento Paraguarí) | Territory Lost | Diocese of Carapeguá, Paraguay | Erected |
| 1978 | Diocese of Concepción (Santissima Concezione) en Paraguay (San Pedro) | Territory Lost | Diocese of San Pedro, Paraguay | Erected |
| 1991 | Archdiocese of Vilnius, Lithuania | Territory Lost | Diocese of Białystok, Poland | Erected |
| 1991 | Diocese of Pinsk, Belarus | Territory Lost | Diocese of Drohiczyn, Poland | Erected |
| 1999 | Eparchy of Joubbé, Batrun e Sarba (Maronite), Lebanon | Split | Eparchy of Batrun (Maronite), Lebanon | Split |
| 1999 | Eparchy of Jounieh (Maronite), Lebanon
Eparchy of Joubbé, Batrun e Sarba (Maronite), Lebanon | United | Eparchy of Joubbé, Sarba e Jounieh (Maronite), Lebanon | United |
| 2007 | Diocese of Johannesburg, South Africa | Elevated | Archdiocese of Johannesburg, South Africa | Elevated |
| 2007 | Diocese of Manzini, eSwatini (from Pretoria) | Metropolitan Changed | ||
| 2007 | Diocese of Klerksdorp, South Africa (from Pretoria) | Metropolitan Changed | ||
| 2007 | Diocese of Witbank, South Africa (from Pretoria) | Metropolitan Changed | ||
| 2007 | Vicariate Apostolic of Francistown, Botswana (from Bloemfontein) | Metropolitan Changed | ||
| 2007 | Diocese of Gaborone, Botswana (from Bloemfontein) | Metropolitan Changed | ||
| 2022 | Congregation for the Evangelization of Peoples, Roman Curia
Pontifical Council for Promoting the New Evangelization, Roman Curia | United | Dicastery for Evangelization, Roman Curia | United |
| 2022 | Congregation for the Doctrine of the Faith, Roman Curia | Elevated | Dicastery for the Doctrine of the Faith, Roman Curia | Elevated |
| 2022 | Office of Papal Charities, Roman Curia | Elevated | Dicastery for the Service of Charity, Roman Curia | Elevated |
| 2022 | Congregation for the Oriental Churches, Roman Curia | Elevated | Dicastery for the Eastern Churches, Roman Curia | Elevated |
| 2022 | Congregation for Divine Worship and the Discipline of the Sacraments, Roman Curia | Elevated | Dicastery for Divine Worship and the Discipline of the Sacraments, Roman Curia | Elevated |
| 2022 | Congregation for the Causes of Saints, Roman Curia | Elevated | Dicastery for the Causes of Saints, Roman Curia | Elevated |
| 2022 | Congregation for Bishops, Roman Curia | Elevated | Dicastery for Bishops, Roman Curia | Elevated |
| 2022 | Congregation for the Clergy, Roman Curia | Elevated | Dicastery for the Clergy, Roman Curia | Elevated |
| 2022 | Congregation for Institutes of Consecrated Life and Societies of Apostolic Life, Roman Curia | Elevated | Dicastery for Institutes of Consecrated Life and Societies of Apostolic Life, Roman Curia | Elevated |
| 2022 | Pontifical Council for Promoting Christian Unity, Roman Curia | Elevated | Dicastery for Promoting Christian Unity, Roman Curia | Elevated |
| 2022 | Pontifical Council for Interreligious Dialogue, Roman Curia | Elevated | Dicastery for Interreligious Dialogue, Roman Curia | Elevated |
| 2022 | Pontifical Council for Culture, Roman Curia
Congregation for Catholic Education (for Institutes of Study), Roman Curia | United | Dicastery for Culture and Education, Roman Curia | United |
| 2022 | Pontifical Council for Legislative Texts, Roman Curia | Elevated | Dicastery for Legislative Texts, Roman Curia | Elevated |
| 2022 | Pontifical Committee for Investments, Roman Curia | Established | ||
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