| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Ippolito Andreassi, O.S.B. † | Mantova | Bishop of Terni, Italy |
| Born | Fabrizio Antinoro † | Naples | Bishop of Siracusa, Italy |
| Born | César Argelli (de Paltronibus) † | Bononiae | Archbishop of Avignon, France |
| 28.0 | Ordained Priest | William Bishop † | Priest | Vicar Apostolic of England, Great Britain |
| Appointed | François Bonard † | Bishop of (Saint-Lizier de) Couserans, France |
| 32.3 | Appointed | Filippo Boncompagni † | Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} | Cardinal, Cardinal-Priest of San Sisto |
| Died | Antonín Brus von Muglitz † | Archbishop of Praha {Prague}, Czech Republic |
| Appointed | Girolamo Bucchia † | Bishop of Kotor (Cattaro), Montenegro |
| 59.0 | Appointed | Afonso de Castelo-Branco † | Bishop of Faro {Algarve}, Portugal | Bishop of Coimbra, Portugal |
| Died | Orazio Caracciolo † | Bishop of Venafro, Italy |
| 62.0 | Resigned | Melchior Miguel Carneiro Leităo, S.J. † | Patriarch of Foreign Diocese |
| Born | Pompeo Coronini † | | Bishop of Trieste, Italy |
| Succeeded | Jean du Chemin † | Bishop of Condom, France |
| Born | Pedro da Costa † | Porto | Bishop of Angra, Portugal |
| Appointed | Leonardo Fernandes de Sá † | Bishop of Macau, China |
| Born | Girolamo de Franchis † | | Archbishop of Capua, Italy |
| Resigned | Beatus di Porta † | Bishop of Chur, Switzerland | Bishop Emeritus |
| Died | Simăo de Sá Pereira † | Bishop of Porto, Portugal |
| 35.2 | Ordained Priest | Johann Otto von Gemmingen † | Priest of Augsburg, Germany | Bishop |
| Died | Lelio Giordano † | Archbishop of Rossano, Italy |
| Born | Giovanni Francesco Gozzadini † | Naxien | Bishop of Rethymo, Greece |
| Born | Achille de Harlay de Sancy † | Paris | Bishop Emeritus of Saint-Malo, France |
| 78.0 | Resigned | Umberto Locati, O.P. † | Bishop of Bagnoregio (Bagnorea), Italy | Bishop Emeritus |
| Appointed | Antonio Maria Manzolio † | Bishop of Gravina (di Puglia), Italy | Bishop Emeritus |
| Born | Angelo Mascardo † | Sarzana | Bishop of Noli, Italy |
| Born | Gian Gaspare Melis † | Firman | Bishop of Anagni, Italy |
| 68.0 | Died | Alfonso Merchante de Valeria † | Auxiliary Bishop of Burgos, Spain |
| Born | Jerónimo Manrique de Lara y de Herrera, O. de M. † | Valladolid, Spain | Bishop of Santiago de Cuba |
| 43.0 | Installed | St. Toribio Alfonso de Mogrovejo † | Archbishop of Lima, Peru |
| Died | Giulio Monaco † | Bishop of Lucera, Italy |
| Resigned | Jean de Monluc † | Bishop of Condom, France | Bishop Emeritus |
| 52.0 | Ordained Bishop | Gregorio de Montalvo Olivera, O.P. † | Bishop of Yucatán (Mérida), México | Bishop of Cuzco, Peru |
| Born | Gregorio Naro † | Rome | Cardinal, Bishop of Rieti, Italy |
| Born | Rickard O’Connell † | Iveragh | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| Died | Donat O’Gallagher, O.F.M. † | Bishop of Down and Connor, Ireland |
| Died | Salvatore Pacini † | Bishop of Chiusi, Italy |
| Appointed | Giambattista Palma † | Bishop of Massa Lubrense, Italy |
| Died | Giuseppe Pamphilj (Panfili), O.S.A. † | Bishop of Segni, Italy |
| Born | Bernardino Panicola † | Monticelli | Bishop of Ravello e Scala, Italy |
| Born | Bernardino Piccoli † | | Bishop of Strongoli, Italy |
| Born | Marco Antonio (Sebastianus) Quirino, O. Cruc. † | | Archbishop Emeritus of Naxos, Greece |
| Died | Julián Ramirez, O.S. † | Bishop of Guadix, Spain | Bishop Emeritus |
| 40.0 | Ordained Priest | Miguel Rangel, O.F.M. Cap. † | Priest of Order of Friars Minor Capuchin | Bishop of Angola e Congo, Angola |
| Born | Caesar Righini † | Pontremoli | Bishop of Sarsina, Italy |
| Died | Mikhail Rizzi el-Bkoufani † | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | Ciriaco Rocci † | Rome, Italy | Cardinal, Titular Archbishop of Patrae (Veters) |
| Born | Pedro Rosales Encio † | Miranda de Ebro | Bishop of Lugo, Spain |
| 69.0 | Installed | Domingo Salazar, O.P. † | Bishop of Manila, Philippines |
| Born | Francesco Saluzzo † | Napoli | Bishop Emeritus of Mottola (Motula), Italy |
| Born | Juan Sánchez Duque de Estrada † | Santa Cruz de la Jara, Spain | Bishop of Trujillo, Peru |
| Born | Bernardino Scala † | Eugubin | Bishop of Montefeltro, Italy |
| 43.4 | Resigned | Filippo Sega † | Apostolic Nuncio to Spain | Cardinal, Bishop of Piacenza, Italy |
| Died | Scipione Salernitano † | Bishop of Acerra, Italy |
| Born | Tommaso Sanfelice, C.R. † | Napoli | Bishop of Montepeloso, Italy |
| Died | Ottavio Santacroce † | Bishop of Cervia, Italy |
| Died | Meliaduce Suico † | Bishop of Carinola (Calina), Italy |
| Born | Roberto Ubaldini † | Florence | Cardinal, Bishop Emeritus of Montepulciano, Italy |
| Born | Girolamo Vidoni † | Cremona, Italy | Cardinal, Cardinal-Deacon of Santi Quattro Coronati |
| Born | Giuliano Viviani † | Pisa | Bishop of Isola, Italy |
| Jan | | Died | Francesco Cittadini † | Bishop of Castro [del Lazio], Italy |
| Died | Bartolomeo Ferro, O.P. † | Bishop of Terni, Italy |
| Born | Francisco Sánchez Villanueva y Vega † | Madrid | Bishop Emeritus of Islas Canarias {Canary Islands}, Spain |
| 13 Jan | | Appointed | Celso Paci † | Bishop of Castro [del Lazio], Italy |
| 16 Jan | | Appointed | Girolamo Petroni † | Bishop of Terni, Italy |
| Appointed | Georg von Schönenberg † | Bishop of Worms, Germany |
| 19 Jan | | Died | Sancho Busto de Villegas † | Bishop of Avila, Spain |
| 23 Jan | | Appointed | Maciej Wielicki, O.P. † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Appointed | Maciej Wielicki, O.P. † | Titular Bishop of Mactaris | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 25 Jan | | Professed | Ambrosio Vallejo Mejía, O. Carm. † | Member of Order of Our Lady of Mt. Carmel | Bishop of Trujillo, Peru |
| 30 Jan | 26.1 | Selected | Ernst von Bayern † | Bishop of Ličge, Belgium | Archbishop-Elect of Köln {Cologne}, Germany |
| 2 Feb | 36.1 | Ordained Bishop | Peter Binsfeld † | Titular Bishop of Azotus | Auxiliary Bishop of Trier, Germany |
| 13 Feb | | Appointed | Cesare Ferrero † | Bishop of Ivrea, Italy |
| Appointed | Domenico Grimaldi † | Bishop of Savona, Italy | Archbishop of Avignon, France |
| Appointed | Jean Six † | Bishop of Saint-Omer, France |
| 17 Feb | | Born | Faustus Poli † | Usigni | Cardinal, Bishop of Orvieto, Italy |
| 20 Feb | | Appointed | Pietro Cedolini † | Bishop of Hvar (Lesina), Croatia |
| Appointed | Martino de Martinis, S.J. † | Bishop of San Severo, Italy |
| Appointed | Giovanni Francesco Orefice † | Bishop of Acerno, Italy | Bishop Emeritus |
| 6 Mar | 65.2 | Appointed | Francisco Antonio Orantes Vélez, O.F.M. † | Bishop of Oviedo, Spain |
| 15 Mar | 38.0 | Confirmed | Martin von Eyb † | Bishop of Bamberg, Germany | Former Bishop-Elect |
| 20 Mar | | Born | Anton Crosini von Bonporto † | Trento | Bishop of Brixen {Bressanone}, Italy |
| 3 Apr | 26.3 | Confirmed | Ernst von Bayern † | Bishop of Ličge, Belgium | Archbishop-Elect of Köln {Cologne}, Germany |
| Appointed | Angelo Peruzzi † | Bishop of Sarsina, Italy |
| 5 Apr | 79.3 | Died | Jakub Uchański † | Archbishop of Gniezno, Poland |
| 12 Apr | 42.8 | Appointed | Alberto Bolognetti † | Apostolic Nuncio to Poland | Cardinal, Bishop of Massa Marittima, Italy |
| 17 Apr | | Appointed | Jean Louis Pallavicino Ceva † | Bishop of Saluzzo, Italy | Bishop of Nice, France |
| 26 Apr | 69.3 | Died | Francisco Blanco Salcedo † | Archbishop of Santiago de Compostela, Spain |
| 10 May | | Appointed | Johann Ertlin † | Auxiliary Bishop of Bamberg, Germany |
| Appointed | Johann Ertlin † | Titular Bishop of Athyra | Auxiliary Bishop of Bamberg, Germany |
| Appointed | Ludovico Majorino, C.R.L. † | Bishop of Castellammare di Stabia, Italy |
| 30.7 | Appointed | Bartholomäus Scholl † | Auxiliary Bishop of Freising, Germany |
| 30.7 | Appointed | Bartholomäus Scholl † | Titular Bishop of Dariensis | Auxiliary Bishop of Freising, Germany |
| 15 May | 65.4 | Ordained Bishop | Francisco Antonio Orantes Vélez, O.F.M. † | Bishop of Oviedo, Spain |
| 16 May | 49.4 | Died | Flavio Orsini † | Cardinal, Bishop of Spoleto, Italy |
| Succeeded | Pietro Orsini † | Bishop of Spoleto, Italy | Bishop of Aversa, Italy |
| 47.4 | Died | Alessandro Sforza † | Cardinal, Bishop Emeritus of Parma, Italy |
| 17 May | | Died | Henrique de Távora e Brito, O.P. † | Archbishop of Goa, India |
| 19 May | | Installed | Girolamo Diedo † | Bishop of Crema, Italy | Bishop Emeritus |
| 29 May | | Appointed | Masseo Bardi, O.F.M. † | Bishop of Chiusi, Italy |
| Appointed | Tommaso Sperandio Corbelli † | Bishop of Bagnoregio (Bagnorea), Italy |
| 4 Jun | 71.4 | Died | Jakob von Eltz † | Archbishop of Trier, Germany |
| 5 Jun | 68.6 | Died | Martín de Córdoba Mendoza, O.P. † | Bishop of Córdoba, Spain |
| 21.4 | Installed | Christophe de L’Estang † | Bishop of Lodčve, France | Bishop of Carcassonne, France |
| 11 Jun | 63.4 | Died | Luis Tello Maldonado † | Bishop of Segovia, Spain |
| 16 Jun | | Appointed | Anton Manicir † | Auxiliary Bishop of Gurk, Austria |
| Appointed | Anton Manicir † | Titular Bishop of Germaniciana | Auxiliary Bishop of Gurk, Austria |
| 10 Jul | 53.9 | Appointed | Renaud de Beaune † | Archbishop of Bourges, France | Archbishop of Sens, France |
| Appointed | Gerolamo Mazzarelli † | Bishop of Nona (Nin), Croatia |
| 18 Jul | | Born | Pier Luigi Carafa (Sr.) † | Naples | Cardinal, Bishop Emeritus of Tricarico, Italy |
| 31 Jul | 56.6 | Selected | Johann von Schönenberg † | Archbishop of Trier, Germany |
| Aug | | Born | Francesco Paolucci † | Forlě, Italy | Cardinal, Prefect of the Congregation of the Council |
| 7 Aug | 61.6 | Appointed | Stanisław Karnkowski † | Archbishop of Gniezno, Poland |
| Sep | 51.7 | Appointed | Bl. Dermot O’Hurley † | Archbishop of Cashel, Ireland |
| 10 Sep | 51.7 | Ordained Bishop | Bl. Dermot O’Hurley † | Archbishop of Cashel, Ireland |
| 11 Sep | 49.7 | Appointed | Pedro Fernández Temińo † | Bishop of Avila, Spain |
| 33.7 | Appointed | Edmund MacGauran (Magauran) † | Bishop of Ardagh (and Clonmacnois), Ireland | Archbishop of Armagh, Ireland |
| Appointed | Andrés de Noronha † | Bishop of Plasencia, Spain |
| Appointed | Nicola Antonio Vitelli † | Bishop of Carinola (Calina), Italy |
| 21 Sep | | Died | Juan Antolínez Brecianos de la Rivera † | Bishop Emeritus of Giovinazzo, Italy |
| 26 Sep | | Died | Giacomo Silverii-Piccolomini † | Bishop of Teramo, Italy |
| 27 Sep | | Born | Damián Lopez de Haro y Villarda, O.SS.T. † | Toledo, Spain | Bishop of Puerto Rico (Porto Rico) |
| 11 Oct | | Died | Carlo Grimaldi † | Bishop of Albenga, Italy |
| 20 Oct | | Appointed | Marcos de Betania, O.F.M. † | Bishop of Porto, Portugal |
| 58.6 | Appointed | Rodrigo de Castro Osorio (de Lemos) † | Cardinal, Archbishop of Sevilla {Seville}, Spain |
| 38.8 | Appointed | Ladislao d’Aquino † | Cardinal, Bishop of Venafro, Italy |
| 57.1 | Resigned | Johann von Haugwitz † | Bishop-Elect of Meißen (Meissen), Germany | Former Bishop-Elect |
| 19.3 | Appointed | François de Joyeuse † | Archbishop of Narbonne, France | Cardinal, Archbishop of Rouen, France |
| Appointed | Luciano Rosso (de Rubeis) † | Bishop of Giovinazzo, Italy | Bishop of Mazara del Vallo, Italy |
| 21 Oct | | Died | Carlos Domenech, C.R.S.A. † | Bishop of Lérida, Spain |
| 27 Oct | | Died | Antimo Marchesani † | Bishop of Cittŕ di Castello, Italy |
| 30 Oct | 51.8 | Appointed | Amador Arrais (de Mondoza), O. Carm. † | Bishop of Portalegre, Portugal | Bishop Emeritus |
| 6 Nov | | Appointed | Joăo Afonso de Menezes † | Archbishop of Braga, Portugal |
| Appointed | Peter von Rascher † | Bishop of Chur, Switzerland |
| 35.8 | Appointed | Stanisław Rozrażewski † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 13 Nov | | Appointed | Marcello Maiorana, C.R. † | Bishop of Acerra, Italy |
| Appointed | Giulio Ricci † | Bishop of Teramo, Italy |
| 20 Nov | | Appointed | Giacomo Masini † | Bishop of Segni, Italy |
| 26 Nov | | Appointed | Ludovico Bentivoglio † | Bishop of Cittŕ di Castello, Italy |
| Appointed | Giuseppe Faraoni † | Bishop of Crotone (Cotrone), Italy |
| 30 Nov | | Ordained Bishop | Johann Ertlin † | Titular Bishop of Athyra | Auxiliary Bishop of Bamberg, Germany |
| 4 Dec | | Appointed | Ferdinando Spinelli † | Bishop of Policastro, Italy |
| 6 Dec | | Born | Nicolau Monteiro, C.O. † | Porto | Bishop of Porto, Portugal |
| 7 Dec | 52.9 | Died | Marquard von Hattstein † | Bishop of Speyer, Germany |
| 20 Dec | 43.0 | Appointed | Eberhard von Dienheim † | Bishop of Speyer, Germany |