| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Giacinto Archiopoli † | | Titular Bishop of Callipolis |
| Born | Gregorio Francisco de Campos † | | Bishop of La Paz, Bolivia |
| 42.0 | Resigned | Basilio Matranga, O.S.B.I. † | Vicar Apostolic | Archbishop of Achrida (Ochrida), Bulgaria |
| 24.0 | Ordained Priest | Stefan Symon (Simon István) Olshavskyi (Olsavszky), O.S.B.M. † | Priest of Mukachevo (Munkács) (Ruthenian), Ukraine | Vicar Apostolic |
| Born | Georges-Louis Phélypeaux d’Herbault † | | Archbishop of Bourges, France |
| 37.0 | Appointed | Lavrentij Druckyj Sokolynskyj, O.S.B.M. † | Bishop of Smoleńsk (Ukrainian), Russian Federation |
| 54.0 | Died | Pawel Antoni Załuski † | Auxiliary Bishop of Płock, Poland |
| 1 Jan | | Born | Martial-Louis de Beaupoil de Saint-Aulaire † | | Bishop of Poitiers, France |
| 3 Jan | | Born | Friedrich Karl Joseph von Erthal † | | Archbishop Emeritus of Mainz, Germany |
| 5 Jan | 76.0 | Died | Carlo Berlingeri † | Archbishop of Santa Severina, Italy |
| 8 Jan | 73.0 | Died | Pierre Clément † | Bishop of Périgueux (Vesuna), France |
| 41.0 | Ordained Bishop | Johann Jakob von Mayer † | Titular Bishop of Pergamum | Auxiliary Bishop of Augsburg, Germany |
| 25.9 | Ordained Priest | Giovanni Federico Orsini Rosa † | Priest | Bishop of Nona (Nin), Croatia |
| 22 Jan | 52.8 | Ordained Priest | Giuseppe Riganti † | Priest | Bishop of Teramo, Italy |
| 27 Jan | 68.4 | Died | Ferdinando d’Adda † | Cardinal, Cardinal-Bishop of Albano |
| 28 Jan | 65.3 | Died | Tommaso Maria Franza, O.P. † | Bishop of Oria, Italy |
| 29 Jan | 22.9 | Ordained Priest | Anton Felix Ciurletti † | Priest of Salzburg, Austria | Auxiliary Bishop |
| 35.4 | Ordained Priest | Antonio Guidi di Bagno † | Priest | Bishop of Mantova, Italy |
| Feb | 59.0 | Died | Thomas Olivieri † | Bishop of Strongoli, Italy |
| 5 Feb | 47.2 | Ordained Priest | Giovanni Domenico Xiberras, O.S.Io.Hieros. † | Priest of Sovereign Military Hospitaller Order of St John of Jerusalem | Titular Bishop of Epiphania in Syria |
| 6 Feb | | Born | Ferdinand Christoph von Waldburg-Zeil † | | Bishop of Chiemsee, Germany |
| 8 Feb | 43.6 | Appointed | Conus Luchini dal Verme † | Bishop of Fondi (Fundi), Italy | Bishop of Ostuni, Italy |
| 67.8 | Appointed | Fabrizio Paolucci † | Cardinal-Bishop of Albano | Cardinal, Secretary of State |
| 66.9 | Appointed | Antonio Paternň † | Archbishop of Lanciano, Italy |
| 42.5 | Appointed | Nicola Pignatelli † | Bishop of Minervino Murge, Italy |
| 65.8 | Appointed | Egidio Quinto, O.F.M. Ref. † | Archbishop of Bar (Antivari), Montenegro |
| 46.1 | Appointed | Raffaele Tosti † | Bishop of Minori, Italy |
| 11 Feb | | Born | Vasilije Božičković (Bosicskovich), O.S.B.M. † | | Bishop of Križevci (Kreutz) (Križevci), Croatia |
| 12 Feb | 67.0 | Ordained Bishop | Antonio Paternň † | Archbishop of Lanciano, Italy |
| 14 Feb | 70.2 | Died | Francesco Maria Casini, O.F.M. Cap. † | Cardinal, Cardinal-Priest of Santa Prisca |
| 15 Feb | 76.3 | Died | Bernardino Belluzzi † | Bishop of Camerino, Italy |
| 19 Feb | 40.9 | Ordained Bishop | Dominique-Marie Varlet † | Titular Bishop of Ascalon | Bishop Emeritus of Baghdad, Iraq |
| 20 Feb | 40.9 | Succeeded | Dominique-Marie Varlet † | Bishop of Baghdad, Iraq | Bishop Emeritus |
| 23 Feb | 88.6 | Died | Nicolň Acciaioli † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 24 Feb | 46.1 | Ordained Bishop | Raffaele Tosti † | Bishop of Minori, Italy |
| 25 Feb | 80.1 | Died | Martín de Ascargorta † | Archbishop of Granada, Spain |
| Born | Zacharias Coccopalmieri † | | Bishop of Umbriatico (Umbriaticum), Italy |
| 26 Feb | 39.3 | Ordained Priest | Gherardo Zandemaria † | Priest | Bishop of Piacenza, Italy |
| 28 Feb | 31.1 | Ordained Bishop | Alejo Fernando de Rojas y Acevedo † | Bishop of Santiago de Chile | Bishop of La Paz, Bolivia |
| 4 Mar | 24.1 | Ordained Priest | Joăo da Cruz Salgado de Castilho, O.C.D. † | Priest of Order of Discalced Carmelites | Bishop of Miranda (do Douro), Portugal |
| 24.8 | Ordained Priest | Adam Imre Majthényi Kesselökö † | Priest | Titular Bishop of Esbus |
| 22.7 | Ordained Deacon | Ferdinando Mandarini † | Deacon | Bishop of Oppido Mamertina, Italy |
| 7 Mar | 55.1 | Ordained Bishop | Thomas (a Sestri) Bottaro, O.P. † | Titular Bishop of Nyssa | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 10 Mar | 74.1 | Died | Andrés Caperó Agramunt, O.C.D. † | Bishop of Lugo, Spain |
| 12 Mar | 43.7 | Ordained Bishop | Conus Luchini dal Verme † | Bishop of Fondi (Fundi), Italy | Bishop of Ostuni, Italy |
| 14 Mar | 63.8 | Resigned | Michelangelo dei Conti † | Bishop of Viterbo e Tuscania, Italy | Pope (Roma {Rome}, Italy) |
| 15 Mar | 58.6 | Confirmed | Ignaz von Lovina † | Bishop of Wiener Neustadt, Austria |
| 38.7 | Appointed | Adriano Sermattei † | Bishop of Viterbo e Tuscania, Italy |
| 38.8 | Appointed | Krzysztof Andrzej Jan Szembek † | Bishop of Przemyśl, Poland | Bishop of Warmia (Ermland), Poland |
| 17 Mar | | Born | Gabriel Jan Podoski † | | Archbishop of Gniezno, Poland |
| 19 Mar | 46.0 | Ordained Bishop | Joăo Cardoso Castelo † | Titular Archbishop of Lacedaemonia | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| 72.6 | Died | Giambattista Spínola (Jr.) † | Cardinal, Cardinal-Priest of San Cesareo in Palatio |
| 22 Mar | 81.1 | Died | José de Oliveira, O.E.S.A. † | Bishop Emeritus of Angola e Congo |
| 23 Mar | | Born | Alexandre-César d’Anterroches † | | Bishop of Condom, France |
| 24 Mar | 68.3 | Died | Raimondo Ferretti † | Archbishop of Ravenna, Italy |
| 25 Mar | 29.8 | Ordained Deacon | Andreas Jakob von Dietrichstein † | Deacon of Salzburg, Austria | Archbishop |
| 26 Mar | 18.6 | Selected | Clemens August Maria von Bayern † | Bishop of Münster, Germany | Archbishop of Köln {Cologne}, Germany |
| 68.2 | Ordained Bishop | Martin de La Cassagne † | Bishop of Lescar, France |
| 27 Mar | 18.6 | Selected | Clemens August Maria von Bayern † | Bishop of Paderborn, Germany | Archbishop of Köln {Cologne}, Germany |
| 29 Mar | 36.6 | Appointed | Annibale Albani † | Chamberlain (Camerlengo) of the Apostolic Chamber | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 45.2 | Appointed | Alexander Antoni Pleszowice Fredro † | Bishop of Chełm, Poland | Bishop of Przemyśl, Poland |
| 69.7 | Appointed | Marino Gini † | Bishop of Sapë, Albania |
| 41.9 | Appointed | Nicolas Pisanelli, C.R. † | Archbishop of Santa Severina, Italy |
| 53.0 | Appointed | Giuseppe Riganti † | Bishop of Teramo, Italy |
| 49.5 | Appointed | Muzio de’ Vecchi † | Bishop of Marsi, Italy |
| 1 Apr | 60.2 | Died | Juan José Llamas Rivas, O. Carm. † | Bishop of Panamá |
| 4 Apr | | Died | Joachim Ciechanowski † | Bishop of Pińsk-Turaŭ (Ukrainian), Belarus |
| 8 Apr | 34.1 | Ordained Priest | Francesco Maria Alberici † | Priest | Bishop of Foligno, Italy |
| 22.0 | Ordained Deacon | Ferdinand Joseph Gabriel von Sarentheim † | Deacon of Brixen {Bressanone}, Italy | Auxiliary Bishop |
| 11 Apr | 23.1 | Ordained Priest | Erasmus Bertone (Bortoni) † | Priest | Titular Bishop of Eumenia |
| 27.8 | Ordained Priest | Lothar Friedrich von Nalbach † | Priest of Trier, Germany | Auxiliary Bishop |
| 14 Apr | 86.5 | Died | Giovanni Tommaso Rovetta, O.P. † | Bishop Emeritus of Hvar (Lesina), Croatia |
| 15 Apr | 71.8 | Died | Giovanni Francesco Maria Poggi, O.S.M. † | Bishop of San Miniato, Italy |
| 16 Apr | 42.0 | Ordained Bishop | Nicolas Pisanelli, C.R. † | Archbishop of Santa Severina, Italy |
| 53.0 | Ordained Bishop | Giuseppe Riganti † | Bishop of Teramo, Italy |
| 22.9 | Ordained Priest | Leopold Maria Joseph von Spaur † | Priest of Brixen {Bressanone}, Italy | Bishop |
| 26.9 | Ordained Priest | Paschalis Zaini † | Priest | Bishop of Guardialfiera (Guardia), Italy |
| 20 Apr | 74.3 | Died | Julián Cano y Tevar, O. Carm. † | Bishop of Ávila, Spain |
| 22 Apr | 60.8 | Died | Claude-Maur d’Aubigné † | Archbishop of Rouen, France |
| 23 Apr | 51.4 | Ordained Bishop | Johann Joachim Hahn † | Titular Bishop of Metellopolis | Auxiliary Bishop of Mainz, Germany |
| 44.4 | Ordained Bishop | Stanisław Józef Hozjusz † | Titular Bishop of Utica | Bishop of Poznań, Poland |
| 58.7 | Ordained Bishop | Ignaz von Lovina † | Bishop of Wiener Neustadt, Austria |
| 60.3 | Ordained Bishop | Jan Joachim Tarło † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine | Bishop of Poznań, Poland |
| 49.6 | Ordained Bishop | Muzio de’ Vecchi † | Bishop of Marsi, Italy |
| 24 Apr | | Born | Miguel de Pamplona González Bassecourt, O.F.M. Cap. † | | Bishop Emeritus of Arequipa, Peru |
| 26 Apr | 63.7 | Appointed | Fulvio Astalli † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 18.6 | Confirmed | Clemens August Maria von Bayern † | Bishop of Münster, Germany | Archbishop of Köln {Cologne}, Germany |
| 35.6 | Appointed | Antonio Guidi di Bagno † | Bishop of Mantova, Italy |
| 41.2 | Appointed | Domenico de Marzano † | Bishop of Strongoli, Italy | Bishop of Bova, Italy |
| 67.2 | Appointed | Francesco Pignatelli (Sr.), C.R. † | Cardinal-Bishop of Sabina | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 30 Apr | 18.7 | Confirmed | Clemens August Maria von Bayern † | Bishop of Paderborn, Germany | Archbishop of Köln {Cologne}, Germany |
| 41.2 | Ordained Bishop | Domenico de Marzano † | Bishop of Strongoli, Italy | Bishop of Bova, Italy |
| May | 45.3 | Ordained Bishop | Alexander Antoni Pleszowice Fredro † | Bishop of Chełm, Poland | Bishop of Przemyśl, Poland |
| 1 May | 35.6 | Ordained Bishop | Antonio Guidi di Bagno † | Bishop of Mantova, Italy |
| 2 May | 67.3 | Died | Kazimierz Łubieński † | Bishop of Kraków, Poland |
| Born | Joăo Marcelino dos Santos Homem Aparício † | | Bishop of Angra, Portugal |
| 4 May | 64.3 | Selected | Jean-Baptiste-Armand Bazin de Bezons † | Archbishop of Rouen, France |
| 8 May | 71.5 | Died | Francisco a Săo Agostinho, T.O.R. † | Bishop of Santiago de Cabo Verde |
| 14 May | 42.1 | Ordained Priest | Giacomo Beni † | Priest | Bishop of Fano, Italy |
| 36.5 | Ordained Deacon | Ettore Quarti (del Quarto) † | Deacon | Bishop of Caserta, Italy |
| 45.0 | Ordained Priest | Cosimo Torelli † | Priest | Bishop of Camerino, Italy |
| 15 May | 50.6 | Appointed | Biagio Antonio Copeti † | Bishop of Mottola (Motula), Italy |
| 52.3 | Appointed | Salvatore di Aloisio † | Bishop of Termoli, Italy |
| 45.3 | Appointed | Pietro Scurra † | Bishop of Pult (Pulati), Albania | Archbishop of Durrës (Durazzo), Albania |
| 37.4 | Ordained Bishop | Lavrentij Druckyj Sokolynskyj, O.S.B.M. † | Bishop of Smoleńsk (Ukrainian), Russian Federation |
| 45.0 | Appointed | Cosimo Torelli † | Bishop of Camerino, Italy |
| 39.6 | Appointed | Gherardo Zandemaria † | Bishop of Borgo San Donnino, Italy | Bishop of Piacenza, Italy |
| 21 May | 50.6 | Ordained Bishop | Biagio Antonio Copeti † | Bishop of Mottola (Motula), Italy |
| 52.3 | Ordained Bishop | Salvatore di Aloisio † | Bishop of Termoli, Italy |
| 36.5 | Ordained Priest | Ettore Quarti (del Quarto) † | Priest | Bishop of Caserta, Italy |
| 45.0 | Ordained Bishop | Cosimo Torelli † | Bishop of Camerino, Italy |
| 39.6 | Ordained Bishop | Gherardo Zandemaria † | Bishop of Borgo San Donnino, Italy | Bishop of Piacenza, Italy |
| 25 May | 41.1 | Removed | Dominique-Marie Varlet † | Bishop of Baghdad, Iraq | Bishop Emeritus |
| 29 May | 55.9 | Installed | Jean-Baptiste Massillon, C.O.I. † | Bishop of Clermont, France |
| 30 May | 59.9 | Ordained Bishop | Joseph-Emmanuel de la Trémoille † | Cardinal, Archbishop of Cambrai, France |
| 2 Jun | 72.4 | Died | Charles Le Goux de la Berchčre † | Archbishop of Narbonne, France |
| 3 Jun | 24.0 | Ordained Deacon | Biagio Chiarelli † | Deacon | Bishop of Ravello e Scala, Italy |
| 22.9 | Ordained Deacon | Pál Štefan Forgách † | Deacon | Bishop of Vác, Hungary |
| 23.9 | Ordained Priest | Diego Manola † | Priest | Bishop of Trogir (Traů), Croatia |
| 23.0 | Ordained Priest | Cesare Rossi † | Priest | Bishop of Gerace, Italy |
| 5 Jun | | Born | Domenico Orsini d’Aragona † | | Cardinal, Cardinal-Deacon of Santa Maria in Via Lata |
| 21 Jun | 72.4 | Died | Domingo de Valencia † | Bishop-Elect of Nueva Caceres, Philippines |
| 25 Jun | 42.9 | Ordained Bishop | Nicola Pignatelli † | Bishop of Minervino Murge, Italy |