| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | 45.1 | Succeeded | Joseph Coutts | Bishop of Hyderabad in Pakistan | Cardinal, Archbishop Emeritus of Karachi, Pakistan |
| 27.8 | First Vows | Paul Horan, O. Carm. | Member of Order of Our Lady of Mt. Carmel | Bishop of Mutare, Zimbabwe |
| 27.4 | Final Vows | Patrick Michael Neary, C.S.C. | Member of Congregation of Holy Cross | Bishop of Saint Cloud, Minnesota, USA |
| 61.4 | Resigned | Bonaventure Patrick Paul, O.F.M. † | Bishop of Hyderabad in Pakistan | Bishop Emeritus |
| 2 Sep | 52.3 | Ordained Bishop | Osvino José Both | Titular Bishop of Cluentum | Archbishop Emeritus of Brazil, Military |
| 57.2 | Ordained Bishop | Heriberto João Hermes, O.S.B. † | Prelate of Cristalândia, Goias, Brazil | Prelate Emeritus |
| 93.9 | Died | Robert Francis Joyce † | Bishop Emeritus of Burlington, Vermont, USA |
| 63.6 | Ordained Bishop | Emmanuel Otteh † | Titular Bishop of Cova | Bishop Emeritus of Issele-Uku, Nigeria |
| 30.2 | Ordained Priest | Protase Rugambwa | Priest of Rulenge, Tanzania | Cardinal, Archbishop of Tabora, Tanzania |
| 4 Sep | 57.5 | Succeeded | Aloysio José Leal Penna, S.J. † | Bishop of Bauru, Sao Paulo, Brazil | Archbishop Emeritus of Botucatu, Sao Paulo, Brazil |
| 74.9 | Retired | Cândido Rubens Padín, O.S.B. † | Bishop of Bauru, Sao Paulo, Brazil | Bishop Emeritus |
| 7 Sep | 27.1 | Perpetual Vows | Víctor Carabés Chávez, M.N.M. | Member of Misioneros de la Natividad de María | Bishop of Tenancingo, México, México |
| 26.5 | Perpetual Vows | Juan Manuel González Sandoval, M.N.M. | Member of Misioneros de la Natividad de María | Bishop of Tarahumara, Chihuahua, México |
| 25.2 | Ordained Deacon | Shane Anthony Mackinlay | Deacon of Ballarat, Australia | Archbishop of Brisbane, Australia |
| 8 Sep | 29.2 | Ordained Priest | Jude Ayodeji Arogundade | Priest of Ondo, Nigeria | Bishop |
| 27.1 | Ordained Deacon | Víctor Carabés Chávez, M.N.M. | Deacon of Misioneros de la Natividad de María | Bishop of Tenancingo, México, México |
| 30.9 | Ordained Deacon | Florentin Crihălmeanu † | Deacon of Cluj-Gherla (Claudiopoli-Armenopoli) (Romanian), Romania | Bishop |
| 28.0 | Ordained Priest | Vincent Harolimana | Priest of Nyundo, Rwanda | Bishop of Ruhengeri, Rwanda |
| 24.7 | Perpetual Vows | Charlie Malapitan Inzon, O.M.I. | Member of Oblates of Mary Immaculate | Archbishop of Cotabato, Philippines |
| 31.8 | Ordained Priest | Antoine Kambanda | Priest of Kigali, Rwanda | Cardinal, Archbishop |
| 28.3 | Perpetual Vows | João Kot, O.M.I. | Member of Oblates of Mary Immaculate | Bishop of Zé-Doca, Maranhão, Brazil |
| 28.5 | Ordained Priest | Meron Mazur, O.S.B.M. | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Bishop of Imaculada Conceição in Prudentópolis (Ukrainian), Parana, Brazil |
| 58.6 | Appointed | Gian Vincenzo Moreni † | Apostolic Nuncio to Philippines |
| 28.6 | Ordained Deacon | Éric Marie de Moulins d’Amieu de Beaufort | Deacon of Paris, France | Archbishop of Reims, France |
| 23.1 | Professed | Manuel Ochogavía Barahona, O.S.A. | Member of Order of St. Augustine | Bishop of Colón-Kuna Yala, Panama |
| 24.4 | Perpetual Vows | Marek Ochlak, O.M.I. | Member of Oblates of Mary Immaculate | Bishop of Fenoarivo Atsinanana, Madagascar |
| 22.6 | Professed | Marie Fabien Raharilamboniaina, O.C.D. | Member of Order of Discalced Carmelites | Bishop of Morondava, Madagascar |
| 26.7 | First Vows | Jean-Charles Wismick, S.M.M. | Member of Missionaries of the Company of Mary | Auxiliary Bishop of Port-au-Prince, Haïti |
| 9 Sep | 30.9 | Ordained Priest | Florentin Crihălmeanu † | Priest of Cluj-Gherla (Claudiopoli-Armenopoli) (Romanian), Romania | Bishop |
| 58.1 | Ordained Bishop | Armando Dini | Bishop of Avezzano, Italy | Archbishop Emeritus of Campobasso-Boiano, Italy |
| 31.5 | Ordained Priest | Joseph Ha Chi-shing, O.F.M. | Priest of Order of Friars Minor | Auxiliary Bishop of Hong Kong [Xianggang], China |
| 58.7 | Ordained Bishop | Umberto Tramma † | Bishop of Nola, Italy | Official of the Pontifical Council for Legislative Texts |
| 10 Sep | 86.4 | Died | Asrate Mariam Yemmeru † | Archbishop Emeritus of Addis Abeba (Ethiopian), Ethiopia |
| 12 Sep | 50.6 | Appointed | Evangelista Alcimar Caldas Magalhães, O.F.M. Cap. † | Prelate of Alto Solimões, Amazonas, Brazil | Bishop Emeritus of Alto Solimões, Amazonas, Brazil |
| 46.9 | Ordained Bishop | Angelo Comastri | Bishop of Massa Marittima-Piombino, Italy | Cardinal, President Emeritus of the Fabric of St. Peter |
| 46.9 | Ordained Bishop | Patrick D’Rozario, C.S.C. | Bishop of Rajshahi, Bangladesh | Cardinal, Archbishop Emeritus of Dhaka, Bangladesh |
| 68.4 | Retired | Adalberto Domingos Marzi, O.F.M. Cap. † | Prelate of Alto Solimões, Amazonas, Brazil | Prelate Emeritus |
| 53.2 | Appointed | Giovanni Battista Morandini † | Apostolic Nuncio to Guatemala | Apostolic Nuncio |
| 13 Sep | 60.3 | Appointed | René Pierre Louis Joseph Séjourné † | Bishop of Saint-Flour, France | Bishop Emeritus |
| 14 Sep | 31.9 | Perpetual Vows | Saverio Antonio Gennaro Cannistrà, O.C.D. | Member of Order of Discalced Carmelites | Archbishop of Pisa, Italy |
| 15 Sep | 25.9 | Ordained Priest | Ciro Fanelli | Priest of Lucera-Troia, Italy | Bishop of Melfi-Rapolla-Venosa, Italy |
| 25.4 | Ordained Priest | Pierbattista Pizzaballa, O.F.M. | Priest of Order of Friars Minor | Cardinal, Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 16 Sep | 75.2 | Died | James Francis Carney † | Archbishop of Vancouver, British Columbia, Canada |
| 66.4 | Died | Héctor Jaramillo Duque, S.D.B. † | Bishop of Sincelejo, Colombia |
| 47.7 | Ordained Bishop | Bernard Nsayi † | Bishop of Nkayi, Congo | Bishop Emeritus |
| 53.7 | Ordained Bishop | Jacques Jean Joseph Jules Perrier | Coadjutor Bishop of Chartres, France | Bishop Emeritus of Tarbes et Lourdes, France |
| 60.0 | Ordained Bishop | Ramón Artemio Staffolani † | Coadjutor Bishop of Río Cuarto, Argentina | Bishop Emeritus of Villa de la Concepción del Río Cuarto, Argentina |
| 24.7 | Solemn Vows | Mladen Vukšić, O.F.M. | Member of Order of Friars Minor | Bishop of Kotor (Cattaro), Montenegro |
| 17 Sep | 88.3 | Died | Eberhard (Hermann) Spiess (Spieß), O.S.B. † | Abbot Emeritus of Songea, Tanzania |
| 18 Sep | 69.0 | Died | Giuliano Agresti † | Archbishop of Lucca, Italy |
| 19 Sep | 37.4 | Solemn Vows | Thomas Thanh Thai Nguyen | Member of Missionaries of Our Lady of La Salette | Auxiliary Bishop of Orange in California, USA |
| 21 Sep | 53.6 | Ordained Bishop | Francis Eugene George, O.M.I. † | Bishop of Yakima, Washington, USA | Cardinal, Archbishop Emeritus of Chicago, Illinois, USA |
| 22 Sep | 81.7 | Died | Charles (Carlo) Maria Cavallera, I.M.C. † | Bishop Emeritus of Marsabit, Kenya |
| 26.4 | Solemn Vows | Walter Jehová Heras Segarra, O.F.M. | Member of Order of Friars Minor | Bishop of Loja, Ecuador |
| 47.7 | Ordained Bishop | Giuseppe Leanza | Titular Archbishop of Lilybaeum | Apostolic Nuncio |
| 23 Sep | 21.0 | Entered | Sabino Iannuzzi, O.F.M. | Member of Order of Friars Minor | Bishop of Castellaneta, Italy |
| 60.9 | Ordained Bishop | Tarcisius Resto Phanrang, S.D.B. † | Titular Bishop of Corniculana | Archbishop of Shillong, India |
| 26 Sep | 81.0 | Died | Jorge Francisco Mosquera Barreiro, O.F.M. † | Vicar Apostolic Emeritus of Zamora, Ecuador |
| 27 Sep | 77.6 | Died | John Thomas Durkin, M.S.C. † | Bishop Emeritus of Louis Trichardt-Tzaneen, South Africa |
| 28 Sep | 26.7 | Ordained Priest | Sergio Osvaldo Buenanueva | Priest of Mendoza, Argentina | Bishop of San Francisco, Argentina |
| 29 Sep | 56.7 | Succeeded | Francisco José Cox Huneeus, P. Schönstatt † | Archbishop of La Serena, Chile | |
| 34.9 | Ordained Priest | Jerome Feudjio | Priest of Saint Thomas, American Virgin Islands, USA | Bishop |
| 84.3 | Died | Raffaele Forni † | Apostolic Nuncio |
| 28.5 | Ordained Priest | Guido Gallese | Priest of Genova {Genoa}, Italy | Bishop of Alessandria (della Paglia), Italy |
| 26.9 | Ordained Priest | António Francisco Jaca, S.V.D. | Priest of Society of the Divine Word | Bishop of Benguela, Angola |
| 27.2 | Ordained Deacon | Luis Manuel López Alfaro | Deacon of Toluca, México, México | Bishop of Tapachula, Chiapas, México |
| 86.1 | Died | Volodymyr Malanczuk, C.Ss.R. † | Apostolic Exarch Emeritus of France (Ukrainian) |
| 75.0 | Retired | Manuel José Bernardino Piñera Carvallo † | Archbishop of La Serena, Chile | Archbishop Emeritus |
| 42.0 | Appointed | Józef Mirosław Życiński † | Bishop of Tarnów, Poland | Archbishop of Lublin, Poland |
| 30 Sep | 50.5 | Ordained Bishop | Miguel José Asurmendi Aramendia, S.D.B. † | Bishop of Tarazona, Spain | Bishop Emeritus of Vitoria, Spain |
| 27.7 | Ordained Priest | Philip Eduard Roger Dickmans | Priest of Hasselt, Belgium | Bishop of Miracema do Tocantins, Brazil |
| 25.5 | Ordained Priest | Lucio Adrian Ruiz | Priest of Santa Fe, Argentina | Secretary of the Dicastery for Communication |