| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | | Born | Jesus Armamento Dosado, C.M. † | | Archbishop Emeritus of Ozamiz, Philippines |
| Born | Ruggero Franceschini, O.F.M. Cap. † | | Archbishop Emeritus of Izmir (Smirne), Turkey |
| 25.9 | Entered | Hugo Mark Gerbermann, M.M. † | Member of Catholic Foreign Mission Society of America | Bishop Emeritus of Huehuetenango, Guatemala |
|
| Born | Paolino Schiavon | | Auxiliary Bishop Emeritus of Roma {Rome}, Italy |
| 2 Sep | 23.8 | Perpetual Vows | Ronald Gerard Connors, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop Emeritus of San Juan de la Maguana, Dominican Republic |
|
| Born | Joseph Kunnath, C.M.I. | | Bishop Emeritus of Adilabad (Syro-Malabar), India |
|
| Born | Tito Solari Capellari, S.D.B. | | Archbishop Emeritus of Cochabamba, Bolivia |
| 3 Sep | 56.7 | Installed | Francesco Pietro Tesauri † | Archbishop of Lanciano (e Ortona), Italy |
| 4 Sep | 47.0 | Installed | Joseph Charbonneau † | Bishop of Hearst, Ontario, Canada | Archbishop Emeritus of Montréal, Québec, Canada |
| 5 Sep | | Born | Ricardo José Weberberger, O.S.B. † | | Bishop of Barreiras, Bahia, Brazil |
| 6 Sep |
| Born | Luigi Travaglino | | Apostolic Nuncio |
| 7 Sep | | Born | Thomas Pai Cheng-leung † | | Apostolic Administrator Emeritus |
| 8 Sep | 19.6 | Professed | Alphonse Chantoux, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Prefect Emeritus of Fada N’Gourma, Burkina Faso |
| 18.5 | Professed | James (Jaime) Collins, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop Emeritus of Miracema do Tocantins, Brazil |
| 56.7 | Ordained Bishop | Maurice-Auguste-Eugène Foin † | Titular Bishop of Ionopolis | Auxiliary Bishop of Le Mans, France |
| 54.4 | Ordained Bishop | Souleyman Kutchouk Ousta † | Titular Bishop of Comana Armeniae | Auxiliary Bishop of Babylon {Babilonia} (Chaldean), Iraq |
| 10 Sep | 21.8 | Ordained Priest | Boleslaw Lukasz Taborski † | Priest of Przemyśl, Poland | Auxiliary Bishop Emeritus of Przemyśl, Poland |
| 11 Sep | 63.1 | Died | Pablo Alegría Iriarte, O.A.R. † | Vicar Apostolic of Casanare, Colombia |
| 24.1 | Ordained Priest | Jozef-Maria Heuschen † | Priest of Liège (Luik, Lüttich), Belgium | Bishop Emeritus of Hasselt, Belgium |
|
| Born | José Nelson Westrupp, S.C.I. | | Bishop Emeritus of Santo André, Sao Paulo, Brazil |
| 12 Sep |
| Born | Patrick Joseph Harrington, S.M.A. | | Bishop Emeritus of Lodwar, Kenya |
| 13 Sep | 72.1 | Died | Angelo Maria Dolci † | Cardinal, Apostolic Nuncio |
| 46.8 | Appointed | Giovanni Lucato, S.D.B. † | Vicar Apostolic of Derna, Libya | Bishop of Isernia e Venafro, Italy |
| 46.8 | Appointed | Giovanni Lucato, S.D.B. † | Titular Bishop of Tigias | Bishop of Isernia e Venafro, Italy |
| 15 Sep | 18.9 | Professed | Arnold Boghaert, C.Ss.R. † | Member of Congregation of the Most Holy Redeemer | Bishop of Roseau, Dominica, Antilles |
| 18.5 | First Vows | Adrien André Maria Cimichella, O.S.M. † | Member of Order of Friar Servants of Mary | Auxiliary Bishop Emeritus of Montréal, Québec, Canada |
| 17.3 | Professed | Luis Dalle, SS.CC. † | Member of Congregation of the Sacred Hearts of Jesus and Mary | Apostolic Administrator of Ayaviri, Peru |
| 18.6 | Professed | Francis Roland Lambert, S.M. † | Member of Society of Mary | Bishop Emeritus of Port-Vila, Vanuatu, Pacific (Oceania) |
| 17 Sep | 55.0 | Appointed | Bl. Mykola (Nicola) Czarneckyj (Charnetsky), C.Ss.R. † | Apostolic Exarch of Volyn, Polesia and Podlasie (Byzantine), Ukraine |
| 55.0 | Appointed | Bl. Mykola (Nicola) Czarneckyj (Charnetsky), C.Ss.R. † | Apostolic Administrator of Belarus (Byzantine) | Apostolic Exarch of Volyn, Polesia and Podlasie (Byzantine), Ukraine |
| 25.3 | Ordained Priest | Thomas Joseph Danehy, M.M. † | Priest of Catholic Foreign Mission Society of America | Apostolic Administrator of Pando, Bolivia |
| 38.6 | Installed | José Gaspar d’Afonseca e Silva † | Archbishop of São Paulo, Brazil |
| 69.8 | Appointed | Bl. Klymentiy Sheptytskyi, M.S.U. † | Apostolic Exarch of Russia (Russian) |
| 57.3 | Ordained Bishop | Andrej Skrábik † | Titular Bishop of Scyrus | Bishop of Banská Bystrica, Slovakia |
| 47.5 | Appointed | Josyf Slipyj † | Apostolic Exarch of Great Ukraine (Byzantine) | Cardinal, Major Archbishop of Lviv (Ukrainian), Ukraine |
| 15.7 | Entered | Hovhannes Tertsakian, C.A.M. † | Member of Congregazione Mechitarista di Venezia | Apostolic Exarch Emeritus of United States of America and Canada (Armenian), New York |
| 18 Sep | 24.1 | Professed | Louis Joseph Secondo, T.O.R. † | Member of Third Order Regular of St. Francis of Penance | Minister General Emeritus |
| 19 Sep |
| Born | Ramón Benito de La Rosa y Carpio | | Archbishop Emeritus of Santiago de los Caballeros, Dominican Republic |
| 28.7 | Ordained Priest | Paul Etoga † | Priest of Yaoundé, Cameroon | Bishop Emeritus of Mbalmayo, Cameroon |
| Born | Sebelio Peralta Alvarez † | | Bishop of San Lorenzo, Paraguay |
| 74.9 | Died | Luigi Zaffarami † | Bishop Emeritus of Todi, Italy |
| 20 Sep | 83.8 | Died | Louis Joseph Napoléon Paul Bruchési † | Archbishop of Montréal, Québec, Canada |
| Born | Eustaquio Pastor Cuquejo Verga, C.Ss.R. † | | Archbishop Emeritus of Asunción, Paraguay |
| 47.8 | Installed | Joseph Louis Aldée Desmarais † | Bishop of Amos, Québec, Canada | Bishop Emeritus |
| 67.9 | Succeeded | Georges Gauthier † | Archbishop of Montréal, Québec, Canada |
| 45.0 | Appointed | Charles Leo Nelligan † | Bishop of Canada, Military | Bishop Emeritus of Pembroke, Ontario, Canada |
| 23.5 | Ordained Priest | Wojciech Stanisław Olszowski † | Priest of Lviv, Ukraine |
| 21 Sep | 36.6 | Ordained Bishop | Frederick Anthony Donaghy, M.M. † | Titular Bishop of Setea | Bishop Emeritus of Wuzhou [Wuchow], China |
| 55.1 | Ordained Bishop | Henry Vincent Marshall † | Bishop of Salford, England, Great Britain |
| Born | Basil Myron Schott, O.F.M. † | | Archbishop of Pittsburgh (Ruthenian), Pennsylvania, USA |
| 23 Sep |
| Born | Armando Umberto Gianni, O.F.M. Cap. | | Bishop Emeritus of Bouar, Central African Republic |
| 28.4 | Ordained Priest | Jorge Manrique Hurtado † | Priest of La Paz, Bolivia | Archbishop Emeritus of La Paz, Bolivia |
| 23.0 | Ordained Priest | Geraldo Claudio Luiz Micheletto Pellanda, C.P. † | Priest of Congregation of the Passion | Bishop of Ponta Grossa, Parana, Brazil |
| 24.7 | Ordained Deacon | Władysław Miziołek † | Deacon of Warszawa {Warsaw}, Poland | Auxiliary Bishop Emeritus |
| 28.6 | Entered | José Oleaga Guerequiz, S.J. † | Member of Society of Jesus | Prefect of San Francisco Javier, Peru |
| 24.3 | Ordained Priest | Heinrich Tenhumberg † | Priest of Münster, Germany | Bishop |
| 24.7 | Ordained Priest | Josip Žabkar † | Priest of Ljubljana, Slovenia | Apostolic Nuncio |
| 25 Sep | | Born | Camilo Diaz Gregorio † | | Prelate Emeritus of Batanes, Philippines |
| 28 Sep | | Born | Rrok Kola Mirdita † | | Archbishop of Tiranë-Durrës, Albania |
|
| Born | Juan Piris Frígola | | Bishop Emeritus of Lleida, Spain |
| 29 Sep | 65.1 | Died | Joseph-François-Marie Julliot † | Bishop Emeritus of Les Gonaïves, Haïti |
| Born | Michael Bernard McPartland, S.M.A. † | | Prefect Emeritus of Falkland Islands o Malvinas |
| 1 Oct | 52.1 | Ordained Bishop | Raffaele Campelli † | Bishop of Cagli e Pergola, Italy | Bishop Emeritus |
| 68.9 | Died | François Daoud (David) † | Bishop of Amadiyah (Chaldean), Iraq |
| 31.8 | Ordained Deacon | Nykanor Mykola Deyneha (Dejneha), M.S.U. † | Deacon of Ukrainian Studite Monks (Ukrainian) | Auxiliary Bishop of Lviv (Ukrainian), Ukraine |
| 19.4 | Entered | Samuel Seraphimov Djoundrine, A.A. † | Member of Augustinians of the Assumption | Bishop Emeritus of Nicopoli, Bulgaria |
| 46.5 | Ordained Bishop | Neil Farren † | Bishop of Derry, Ireland | Bishop Emeritus |
| 29.6 | Ordained Priest | Pierre-Paul-Émile Martin, S.M. † | Priest of Society of Mary | Archbishop Emeritus of Nouméa, New Caledonia, Pacific (Oceania) |
| 24.5 | Ordained Priest | Alberto Gaudêncio Ramos † | Priest of Belém do Pará, Brazil | Archbishop Emeritus |
| 2 Oct | 67.2 | Died | George William Mundelein † | Cardinal, Archbishop of Chicago, Illinois, USA |
| 68.2 | Died | Norbert-Georges-Pierre Rousseau † | Bishop of Le Puy-en-Velay, France |
| 68.7 | Died | Augustus John Schwertner † | Bishop of Wichita, Kansas, USA |
| 3 Oct |
| Born | František Radkovský | | Bishop Emeritus of Plzeň, Czechia |
| 43.4 | Ordained Bishop | Leo Isidore Scharmach, M.S.C. † | Titular Bishop of Mostene | Vicar Apostolic Emeritus of Rabaul, Papua New Guinea |
| 5 Oct | 44.8 | Appointed | Donald Alphonsus Campbell † | Bishop of Argyll and The Isles, Scotland, Great Britain | Archbishop of Glasgow, Scotland, Great Britain |
| 57.1 | Appointed | James Maguire † | Coadjutor Bishop of Dunkeld, Scotland, Great Britain |
| 57.1 | Appointed | James Maguire † | Titular Bishop of Ilium | Coadjutor Bishop of Dunkeld, Scotland, Great Britain |
| 6 Oct | 54.5 | Appointed | Louis Chiron † | Bishop of Langres, France |
| 58.4 | Appointed | Edmond Vansteenberghe † | Bishop of Bayonne (-Lescar e Oloron), France |
| 7 Oct | 17.4 | Professed | Giovanni Paolo Gibertini, O.S.B. † | Member of Order of Saint Benedict | Bishop Emeritus of Reggio Emilia-Guastalla, Italy |
| 64.8 | Died | Joseph-Jean-Baptiste Hallé † | Vicar Apostolic Emeritus of Northern Ontario (Ontario-Nord), Canada |
| 50.9 | Ordained Bishop | Alain-Sébastien Le Breton, S.M.M. † | Titular Bishop of Hypselis | Bishop Emeritus of Tamatave, Madagascar |
| Born | Laurent Monsengwo Pasinya † | | Cardinal, Archbishop Emeritus of Kinshasa, Congo (Dem. Rep.) |
| 8 Oct | 71.3 | Died | Jean Castel † | Bishop of Tulle, France |
|
| Born | Stanislaus Fernandes, S.J. | | Archbishop Emeritus of Gandhinagar, India |
| 24.0 | Ordained Priest | Jacques-Julien-Émile Patria † | Priest of Beauvais (-Noyon-Senlis), France | Bishop Emeritus of Périgueux (-Sarlat), France |
| 56.5 | Ordained Bishop | Gioacchino Pedicini † | Bishop of Ariano, Italy | Bishop Emeritus of Avellino, Italy |
| 11 Oct | 69.9 | Died | Joseph Wilfred Dwyer † | Bishop of Wagga Wagga, Australia |
| Born | Zenon Grocholewski † | | Cardinal, Prefect Emeritus of the Congregation for Catholic Education (for Institutes of Study) |
| 48.4 | Appointed | Manuel Pío López Estrada † | Bishop of Veracruz-Jalapa, México | Archbishop Emeritus of Jalapa (Xalapa), Veracruz, México |
| 74.5 | Appointed | Alessandro Verde † | Cardinal, Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} |
| 12 Oct |
| Born | Baldomero Carlos Martini | | Bishop Emeritus of San Justo, Argentina |
| 14 Oct | 73.3 | Installed | José María Caro Rodríguez † | Cardinal, Archbishop of Santiago de Chile |
| 63.9 | Died | Odilon Fages, O.S.F.S. † | Vicar Apostolic of Orange River, South Africa |
| 78.4 | Died | Thomas Patrick Gilmartin † | Archbishop of Tuam, Ireland |
| Born | Edoardo Menichelli † | | Cardinal, Archbishop Emeritus of Ancona-Osimo, Italy |
| 59.0 | Died | Alberto Romita † | Bishop of Boiano-Campobasso, Italy |
| 15 Oct | | Born | Jésus Rocha † | | Bishop of Oliveira, Minas Gerais, Brazil |
| Born | Telesphore Placidus Toppo † | | Cardinal, Archbishop Emeritus of Ranchi, India |
| 18 Oct | 44.5 | Ordained Bishop | William Joseph Condon † | Bishop of Great Falls, Montana, USA |
| 20 Oct | 47.8 | Appointed | Andrzej Cikoto, M.I.C. † | Apostolic Exarch of Harbin [Harbin] (Russian), China |
| 21 Oct |
| Born | Gerald Eugene Wilkerson | | Auxiliary Bishop Emeritus of Los Angeles, California, USA |
| 22 Oct | 25.1 | Ordained Deacon | Jacques Marie Delarue † | Deacon of Paris, France | Bishop of Nanterre, France |
| 25.1 | Ordained Priest | Jacques Marie Delarue † | Priest of Paris, France | Bishop of Nanterre, France |
| 23.4 | Ordained Priest | Luiz Felipe de Nadal † | Priest of Porto Alegre, Rio Grande do Sul, Brazil | Bishop of Uruguaiana, Rio Grande do Sul, Brazil |
|
| Born | Mario Melanio Medina Salinas | | Bishop Emeritus of San Juan Bautista de las Misiones, Paraguay |
| 23 Oct | | Born | Gerard Alfons Kusz † | | Auxiliary Bishop Emeritus of Gliwice, Poland |
|
| Born | Michael John Malone | | Bishop Emeritus of Maitland-Newcastle, Australia |
| 25 Oct | 78.3 | Died | Frediano Giannini, O.F.M. † | Vice-Chamberlain of the Apostolic Chamber |
| 79.2 | Died | Francis Edward Joseph Mostyn † | Archbishop of Cardiff, Wales, Great Britain |
| 26 Oct | 44.5 | Installed | William Joseph Condon † | Bishop of Great Falls, Montana, USA |
| 28 Oct | 58.2 | Ordained Bishop | Alberto Mendoza y Bedolla † | Bishop of Campeche, México |
| 25.5 | Ordained Priest | Julián Mendoza Guerrero † | Priest | Bishop of Buga, Colombia |
| 68.0 | Died | Luigi Francesco Pierini, O.F.M. † | Archbishop of Sucre, Bolivia |
| Born | Efrén Ramos Salazar † | | Bishop of Chilpancingo-Chilapa, Guerrero, México |
| 26.2 | Ordained Priest | Alfonso Tóriz Cobián † | Priest of Guadalajara, Jalisco, México | Bishop Emeritus of Querétaro, México |
| 29 Oct | 48.5 | Ordained Bishop | Thomas Roch Agniswami, S.J. † | Bishop of Kottar, India | Bishop Emeritus |
| 38.3 | Ordained Bishop | Francesco Benedetto Cialeo, O.P. † | Bishop of Multan, Pakistan | Bishop Emeritus of Lyallpur, Pakistan |
| 41.5 | Ordained Bishop | James Colbert † | Titular Bishop of Olbia | Vicar Apostolic Emeritus of Port Elizabeth, South Africa |
| 23.5 | Ordained Priest | Antonio Corso † | Priest | Bishop of Maldonado-Punta del Este, Uruguay |
| 31.8 | Ordained Priest | Nykanor Mykola Deyneha (Dejneha), M.S.U. † | Priest of Ukrainian Studite Monks (Ukrainian) | Auxiliary Bishop of Lviv (Ukrainian), Ukraine |
| 26.1 | Ordained Priest | Julius August Döpfner † | Priest of Würzburg, Germany | Cardinal, Archbishop of München und Freising {Munich}, Germany |
| 33.3 | Ordained Bishop | Alexandre Gonçalves do Amaral † | Bishop of Uberaba, Brazil | Archbishop Emeritus of Uberaba, Minas Gerais, Brazil |
| 23.6 | Ordained Priest | Rubén Isaza Restrepo † | Priest of Manizales, Colombia | Archbishop Emeritus of Cartagena, Colombia |
| 40.3 | Ordained Bishop | Joseph Nakabaale Kiwánuka, M. Afr. † | Titular Bishop of Thibica | Archbishop of Rubaga, Uganda |
| 45.7 | Ordained Bishop | Blasius Sigibald Kurz, O.F.M. † | Titular Bishop of Terenuthis | Prefect of Lingling [Yungchow], China |
| 51.8 | Ordained Bishop | Jean Larregain, M.E.P. † | Titular Bishop of Arycanda | Vicar Apostolic of Yünnanfu, China |
| 24.1 | Ordained Priest | Antonio López Aviña † | Priest | Archbishop Emeritus of Durango, México |
| 43.6 | Ordained Bishop | Henri Martin Mekkelholt, S.C.I. † | Titular Bishop of Athyra | Bishop Emeritus of Palembang, Indonesia |
| 45.7 | Ordained Bishop | Urbanus Stephanus Mauritius Cornelius (Urbain Étienne) Morlion, M. Afr. † | Titular Bishop of Tarasa in Numidia | Bishop Emeritus of Baudouinville, Congo (Dem. Rep.) |
| 46.8 | Ordained Bishop | Louis La Ravoire Morrow, S.D.B. † | Bishop of Krishnagar, India | Bishop Emeritus |
| 54.8 | Ordained Bishop | William Francis O’Shea, M.M. † | Titular Bishop of Naissus | Vicar Apostolic Emeritus of Heijo, Korea (North) |
| 46.0 | Ordained Bishop | Ignace Ramarosandratana † | Titular Bishop of Thiava | Bishop of Miarinarivo, Madagascar |
| 25.9 | Ordained Priest | Ferenc Rosta † | Priest | Auxiliary Bishop of Székesfehérvár (Albareale), Hungary |
| 25.0 | Ordained Priest | Ernesto Segura † | Priest | Auxiliary Bishop of Buenos Aires, Argentina |
| 49.0 | Ordained Bishop | Thomas Tien Ken-hsin (Tienchensing), S.V.D. † | Titular Bishop of Ruspae | Cardinal, Archbishop of Beijing [Peking], China |
| 30 Oct |
| Born | João Bosco Oliver de Faria | | Archbishop Emeritus of Diamantina, Minas Gerais, Brazil |
| 31 Oct |
| Born | Michel Pierre Marie Mouïsse | | Bishop Emeritus of Périgueux (-Sarlat), France |