| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 57.2 | Resigned | Antonio Albergati † | Apostolic Collector to Portugal | Bishop Emeritus of Bisceglie, Italy |
| 25.0 | Ordained Priest | Bernardo Atayde de Lima Perera † | Priest | Bishop of Ávila, Spain |
| Born | Jacinto de Boada y Montenegro † | | Bishop-Elect of Valladolid, Spain |
| Resigned | Antonio Bonfiglioli † | Bishop of Carinola (Calina), Italy | Bishop Emeritus |
| 63.0 | Resigned | Iñigo Brizuela Artiaga, O.P. † | Bishop of Segovia, Spain | Bishop Emeritus |
| 59.7 | Appointed | Cristóforo Chrisostome Carletti, O.F.M. † | Auxiliary Bishop of Calahorra y La Calzada, Spain | Bishop Emeritus of Termia (Thermae), Greece |
| Born | Bernardo de Carrasco y Saavedra, O.P. † | | Bishop of La Paz, Bolivia |
| 53.0 | Resigned | Istvan Szentandrássy (Cecchio), O.F.M. Obs. † | Bishop of Smederevo (Semendria), Serbia | Bishop Emeritus |
| 37.0 | Died | Ferdinando Confalone † | Bishop of Nicastro, Italy |
| Resigned | Pietro Francesco Costa † | Bishop of Savona, Italy | Bishop Emeritus |
| Born | Niccolò Antonio De Tura † | | Bishop of Sarno, Italy |
| Born | Manoel a Nativitate do Nascimento, O.S.H. † | | Bishop of São Tomé e Príncipe |
| 65.0 | Resigned | François de Donadieu † | Bishop of Auxerre, France | Bishop Emeritus |
| Born | Fabio de Vecchi † | | Bishop Emeritus of Montalcino, Italy |
| Born | Lucas Fernández de Piedrahita † | | Bishop of Panamá |
| 44.0 | Died | Giovanni Dominico Giaconi † | Bishop of Guardialfiera (Guardia), Italy |
| 55.0 | Died | Giovanni Girardi, O.F.M. † | Bishop of Syros (e Milos), Greece |
| Born | Andrés Girón † | | Archbishop of Santiago de Compostela, Spain |
| Resigned | Patrick Hanratty † | Vicar Apostolic of Down and Connor, Ireland | Vicar Apostolic Emeritus of Dromore, Ireland |
| Born | Alvarus de Ibarra † | | Bishop of Trujillo, Peru |
| 17.3 | Professed | Fintan Kieffer, O.S.B. † | Member of Order of Saint Benedict | Abbot Emeritus |
| 18.0 | Professed | Gabriel (Havrylo) Kolenda, O.S.B.M. † | Member of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 24.0 | Ordained Priest | Rafał Mikołaj Korsak, O.S.B.M. † | Priest of Basilian Order of Saint Josaphat (Order of St. Basil the Great) | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| Born | Carlo Labia, C.R. † | | Bishop of Adria, Italy |
| Resigned | Vincenzo Landinelli † | Bishop of Albenga, Italy | Bishop Emeritus |
| 49.0 | Resigned | Nicolaus Lesdos (Ludosius) † | Bishop of Milos (Melos), Greece | Bishop Emeritus |
| Born | James Lynch † | | Archbishop of Tuam, Ireland |
| 48.0 | Died | László Majthényi † | Bishop of Sirmio (Srijem; Sirmium), Croatia |
| Born | Claudio Marazzani † | | Bishop of Senigallia, Italy |
| Born | Francesco Martini (Marini) † | | Bishop of Isola, Italy |
| 61.0 | Died | Andrea Mastrillo † | Archbishop of Messina, Italy |
| 63.0 | Died | Giulio Mattei † | Bishop of Bitetto, Italy |
| Born | João de Melo † | | Bishop of Coimbra, Portugal |
| Appointed | Grzegorz Michałowicz † | Coadjutor Bishop of Pińsk-Turaŭ (Ukrainian), Belarus | Bishop |
| Born | Giovanni Battista Nepita † | | Bishop of Massa Lubrense, Italy |
| Died | Scipione Pasquali † | Bishop of Casale Monferrato, Italy |
| 57.0 | Died | Marco Pasqualigo † | Bishop of Cefalonia e Zante, Greece |
| Born | Gregorius Jacobus Pastrana † | | Bishop of Santa Marta, Colombia |
| Born | Jacobus Pedicini, C.R.M. † | | Bishop of Guardialfiera (Guardia), Italy |
| Ordained Priest | Juan de Poblete † | Priest of México, Federal District |
| Born | Gerolamo Priuli, C.R.S. † | | Bishop of Hvar (Lesina), Croatia |
| Born | Joseph von Rabatta † | | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| Born | Francesco Maria Rini (Rhini), O.F.M. † | | Bishop of Agrigento (Girgenti), Italy |
| 31.2 | Ordained Priest | Giovanni Battista Rinuccini † | Priest | Archbishop of Fermo, Italy |
| Born | Victor Augustinus Ripa † | | Bishop of Vercelli, Italy |
| Born | Gabriel de Roquette † | | Bishop of Autun, France |
| Born | Bernardinus a San Antonio, O.F.M. † | | Auxiliary Bishop of Évora, Portugal |
| 41.0 | Appointed | Anastazy Antoni Seljava (Sielawa), O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 22.4 | Ordained Priest | Otto (Johann Theodor) von Senheim, O.P. † | Priest of Order of Friars Preachers | Auxiliary Bishop of Trier, Germany |
| 49.0 | Appointed | János Telegdy † | Bishop of Nitra, Slovakia | Archbishop of Kalocsa, Hungary |
| Born | Antin Terlecki † | | Bishop of Przemyśl, Sambor, et Sanok (Ukrainian), Poland |
| Born | Pompeo Varese † | | Apostolic Nuncio to France |
| Jan | | Ordained Bishop | Grzegorz Michałowicz † | Coadjutor Bishop of Pińsk-Turaŭ (Ukrainian), Belarus | Bishop |
| 49.0 | Died | Roberto Roberti (-Vittori), O.P. † | Bishop of Tricarico, Italy |
| 3 Jan | 62.0 | Died | Cyrus de Thiard de Bissy † | Bishop of Chalons-sur-Saône, France |
| 7 Jan | 28.8 | Ordained Deacon | Fausto Caffarelli † | Deacon | Archbishop of Santa Severina, Italy |
| 34.0 | Ordained Bishop | Vincenzo Giustiniani † | Bishop of Treviso, Italy | Bishop of Brescia, Italy |
| 8 Jan | | Born | Juan Aparicio Navarro † | | Bishop of León, Spain |
| 10 Jan | | Ordained Priest | Fabrice de La Bourdaisière † | Priest | Bishop of Cavaillon, France |
| Born | Ulrich de Mont † | | Bishop of Chur, Switzerland |
| Born | Wilhelm Jakob Rinck von Balderstein † | | Bishop of Basel, Switzerland |
| 12 Jan | 50.0 | Died | Jacques Martin † | Bishop Emeritus of Vannes, France |
| 15 Jan | 34.0 | Appointed | Scipione Tancredi † | Bishop of Sovana (Soana), Italy | Bishop of Montalcino, Italy |
| 16 Jan | | Born | Pierre Lambert de la Motte, M.E.P. † | | Vicar Apostolic Emeritus of Cochin {Cocincina}, Viet Nam |
| 18 Jan | 41.0 | Ordained Bishop | Anastazy Antoni Seljava (Sielawa), O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 21 Jan | | Ordained Bishop | Lorenzo Campeggi † | Bishop of Cesena, Italy | Bishop of Senigallia, Italy |
| 34.0 | Ordained Bishop | Scipione Tancredi † | Bishop of Sovana (Soana), Italy | Bishop of Montalcino, Italy |
| 27 Jan | | Resigned | Innocenzo Massimi † | Apostolic Nuncio to Spain | Bishop of Catania, Italy |
| 36.1 | Appointed | Giulio Cesare Sacchetti † | Apostolic Nuncio to Spain | Cardinal, Prefect of the Congregation of the Council |
| 29 Jan | 55.0 | Resigned | Alessandro Bosco † | Bishop of Gerace, Italy | Bishop Emeritus |
| 28.9 | Appointed | Fausto Caffarelli † | Archbishop of Santa Severina, Italy |
| Appointed | Fabrice de La Bourdaisière † | Bishop of Cavaillon, France |
| 54.0 | Appointed | Juan Martínez de Peralta, O.S.H. † | Archbishop of Zaragoza, Spain |
| Appointed | Stefano de Rosis † | Bishop of Gerace, Italy |
| 44.0 | Appointed | Giulio Antonio Santoro † | Archbishop of Cosenza, Italy |
| Feb | | Died | Fausto Rebaglio † | Bishop of Sessa Aurunca, Italy |
| 2 Feb | 32.0 | Ordained Bishop | Charles-Jacques de Gelas de Léberon † | Bishop of Valence and Die, France |
| 4 Feb | | Ordained Bishop | Diego Cabeza de Vaca † | Bishop of Crotone (Cotrone), Italy |
| 44.0 | Ordained Bishop | Giulio Antonio Santoro † | Archbishop of Cosenza, Italy |
| 10 Feb | 64.5 | Died | Wawrzyniec Gembicki † | Archbishop of Gniezno, Poland |
| 11 Feb | | Ordained Bishop | Stefano de Rosis † | Bishop of Gerace, Italy |
| 39.1 | Ordained Bishop | Sebastien de Rosmadec † | Bishop of Vannes, France |
| 12 Feb | 32.1 | Appointed | Scipione Agnelli † | Bishop of Casale Monferrato, Italy |
| Appointed | Basile Cacace, C.R. † | Auxiliary Bishop of Ravenna, Italy |
| Appointed | Basile Cacace, C.R. † | Titular Archbishop of Ephesus | Auxiliary Bishop of Ravenna, Italy |
| 51.1 | Appointed | Innocentius Serpa, C.R.L. † | Bishop of Pula (Pola), Croatia |
| 62.1 | Appointed | Plácido Tosantos Medina, O.S.B. † | Bishop of Zamora, Spain |
| 14 Feb | 41.1 | Installed | Anastazy Antoni Seljava (Sielawa), O.S.B.M. † | Archbishop of Polotsk (Połock)-Vitebsk (Ukrainian), Belarus | Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 17 Feb | 37.8 | Confirmed | Johann Georg Fuchs von Dornheim † | Bishop of Bamberg, Germany | Bishop-Elect |
| 18 Feb | 32.1 | Ordained Bishop | Scipione Agnelli † | Bishop of Casale Monferrato, Italy |
| 57.1 | Succeeded | Etienne de Brito, S.J. † | Archbishop of Cranganore (Angamala), India |
| 79.1 | Selected | Alfonso López Gallo † | Bishop of Valladolid, Spain |
| 67.1 | Died | Francisco Rodríguez, S.J. † | Archbishop of Cranganore (Angamala), India |
| 42.1 | Ordained Bishop | André de Sauzay † | Titular Bishop of Bethleem |
| 51.1 | Ordained Bishop | Innocentius Serpa, C.R.L. † | Bishop of Pula (Pola), Croatia |
| 25 Feb | | Ordained Bishop | Basile Cacace, C.R. † | Titular Archbishop of Ephesus | Auxiliary Bishop of Ravenna, Italy |
| 26 Feb | 34.6 | Appointed | Giovanni Battista Altieri (Sr.) † | Bishop of Camerino, Italy | Cardinal, Bishop of Todi, Italy |
| 50.1 | Appointed | Stanisław Łubieński † | Bishop of Lutsk (Łuck), Ukraine | Bishop of Płock, Poland |
| 49.1 | Appointed | Michael Masserotti (Misserotti), O.F.M. Conv. † | Bishop of Bitetto, Italy |
| 27 Feb | 55.1 | Appointed | Alessandro Bosco † | Secretary of the Sacred Consistorial Congregation | Bishop Emeritus of Gerace, Italy |
| 3 Mar | | Ordained Bishop | Fabrice de La Bourdaisière † | Bishop of Cavaillon, France |
| 8 Mar | 52.1 | Died | Manuel Afonso de Guerra † | Bishop of Santiago de Cabo Verde |
| 10 Mar | | Ordained Bishop | Gonzalo del Campo (López de Ocampo) † | Archbishop of Lima, Peru |
| 49.1 | Ordained Bishop | Michael Masserotti (Misserotti), O.F.M. Conv. † | Bishop of Bitetto, Italy |
| Ordained Bishop | Bruno Ruade † | Bishop of (Saint-Lizier de) Couserans (or Conserans), France | Bishop Emeritus |
| 11 Mar | | Appointed | Baldassarre Bolognetti, O.S.M. † | Bishop of Nicastro, Italy |
| Appointed | Ottavio Broglia † | Bishop of Asti, Italy |
| 69.1 | Appointed | Luis Fernández de Córdoba † | Archbishop of Sevilla {Seville}, Spain |
| 54.1 | Appointed | Fulgenzio Gallucci, O.S.A. † | Bishop of Boiano, Italy |
| 57.1 | Appointed | Ottaviano Garzadori † | Archbishop of Zadar (Zara), Croatia | Archbishop Emeritus |
| Born | Damian Hartard von Leyen-Hohengeroldseck † | | Archbishop of Mainz, Germany |
| 59.1 | Appointed | Francesco Nori † | Bishop of San Miniato, Italy |
| 56.2 | Confirmed | Philipp Christoph von Sötern † | Archbishop of Trier, Germany | Bishop of Speyer, Germany |
| 12 Mar | 34.7 | Ordained Bishop | Giovanni Battista Altieri (Sr.) † | Bishop of Camerino, Italy | Cardinal, Bishop of Todi, Italy |
| Ordained Bishop | Ottavio Broglia † | Bishop of Asti, Italy |
| 29.0 | Ordained Bishop | Fausto Caffarelli † | Archbishop of Santa Severina, Italy |
| 13 Mar | 47.1 | Died | Matteo Priuli † | Cardinal, Cardinal-Priest of San Marco |
| 14 Mar | | Selected | Melchor de Moscoso y Sandoval † | Bishop of Segovia, Spain |
| 17 Mar | 58.2 | Died | Antonio Caetani (Jr.) † | Cardinal, Archbishop of Capua, Italy |
| 28.7 | Succeeded | Luigi Caetani † | Archbishop of Capua, Italy | Cardinal, Archbishop Emeritus |
| Ordained Bishop | Étienne de Puget † | Titular Bishop of Dardanus | Bishop of Marseille, France |
| 18 Mar | 50.2 | Appointed | Pietro Valier (Valerio) † | Cardinal-Priest of San Marco | Cardinal, Bishop of Padova {Padua}, Italy |
| 19 Mar | 40.4 | Confirmed | Philipp Adolf von Ehrenberg † | Bishop of Würzburg, Germany | Bishop-Elect |
| 23 Mar | | Appointed | Lorenzo Campeggi † | Apostolic Nuncio to Savoy | Bishop of Senigallia, Italy |
| Resigned | Pietro Francesco Costa † | Apostolic Nuncio to Savoy | Bishop Emeritus of Savona, Italy |
| Born | Carlo Cuzzolini † | | Bishop of Pozzuoli, Italy |
| 26.4 | Ordained Priest | Sebastiano Sorrentino † | Priest | Bishop of Troia, Italy |
| 24.0 | Ordained Priest | Pacifico Trasi (Trani), O.F.M. Obs. † | Priest of Order of Observant Friars Minor | Bishop of Cagli, Italy |
| 24 Mar | | Ordained Bishop | Baldassarre Bolognetti, O.S.M. † | Bishop of Nicastro, Italy |
| 29 Mar | 42.6 | Appointed | Pier Luigi Carafa (Sr.) † | Bishop of Tricarico, Italy | Cardinal, Bishop Emeritus |
| Appointed | Juan Hoces † | Archbishop of Tarragona, Spain |
| 31 Mar | 52.2 | Died | Jan Kuczborski † | Bishop of Chelmno (Culma, Kulm), Poland |
| Apr | 42.7 | Ordained Priest | Pier Luigi Carafa (Sr.) † | Priest | Cardinal, Bishop Emeritus of Tricarico, Italy |
| Ordained Bishop | Francisco do Soveral, O.S.A. † | Bishop of São Tomé e Príncipe | Bishop of Angola e Congo |
| 1 Apr | 76.2 | Died | Côme (Cosme) Clausse de Marchaumont † | Bishop of Chalons-sur-Marne, France |
| Succeeded | Henri Clausse de Marchamont † | Bishop of Chalons-sur-Marne, France |
| 6 Apr | 33.7 | Ordained Priest | Emilio Bonaventura Altieri † | Priest | Pope (Roma {Rome}, Italy) |
| 7 Apr | 37.2 | Died | Nikolaus von Wolkenstein † | Bishop of Chiemsee, Germany |
| 13 Apr | 71.2 | Died | William Bishop † | Vicar Apostolic of England (and Wales), Great Britain |
| 15 Apr | 62.5 | Appointed | Hernando de Arias y Ugarte † | Archbishop of La Plata o Charcas, Bolivia | Archbishop of Lima, Peru |
| 45.2 | Appointed | Alderano Bellati (Bellatto) † | Bishop of Bisignano, Italy | Bishop Emeritus |
| 51.2 | Appointed | Paolo Cajatia † | Bishop of Ariano, Italy |
| Appointed | Michał Erazm Działyński † | Auxiliary Bishop of Warmia (Ermland), Poland | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| Appointed | Michał Erazm Działyński † | Titular Bishop of Hippo Diarrhytus | Bishop of Kamyanets-Podilskyi (Kamieniec), Ukraine |
| 73.2 | Appointed | Alonso Orozco Enriquez de Armendáriz Castellanos y Toledo, O. de M. † | Bishop of Michoacán, México |
| Appointed | Alexander Liparuli † | Bishop of Guardialfiera (Guardia), Italy | Bishop of Satriano e Campagna, Italy |
| 60.2 | Appointed | Mario Orsini † | Bishop of Tivoli, Italy |
| 61.2 | Appointed | Miguel Santos de Sampedro † | Bishop of Solsona, Spain | Archbishop of Granada, Spain |
| 17 Apr | 62.2 | Died | Étienne Le Maingre de Boucicault, O.F.M. † | Bishop of Grasse, France |
| 21 Apr | 45.3 | Ordained Bishop | Alderano Bellati (Bellatto) † | Bishop of Bisignano, Italy | Bishop Emeritus |
| Ordained Bishop | Alexander Liparuli † | Bishop of Guardialfiera (Guardia), Italy | Bishop of Satriano e Campagna, Italy |
| 22 Apr | 62.2 | Selected | Juan Torres de Osorio † | Bishop of Oviedo, Spain | Bishop of Valladolid, Spain |
| 61.3 | Selected | Diego Vela Becerril † | Bishop of Lugo, Spain | Bishop of Tuy, Spain |
| 24 Apr | | Died | Paolo Emilio Filonardi † | Archbishop of Amalfi, Italy |
| 29 Apr | 44.3 | Confirmed | Aimeric de Bragelone † | Bishop of Luçon, France | Bishop Emeritus |
| 30.2 | Appointed | Pietro Francesco Costa † | Bishop of Albenga, Italy |
| 66.3 | Appointed | Gregorio de Alarcón, O.A.D. † | Bishop of Santiago de Cuba |
| 38.6 | Resigned | Armand-Jean du Plessis de Richelieu † | Bishop of Luçon, France | Cardinal, Bishop Emeritus |
| 40.3 | Appointed | John Roche † | Bishop of Ferns, Ireland |
| 31.5 | Appointed | Francesco Maria Spinola, C.R. † | Bishop of Savona, Italy |
| May | | Born | Henri Fuchs † | | Apostolic Administrator Emeritus of Lausanne, Switzerland |
| 1 May | | Born | Johann Daniel von Gudenus † | | Auxiliary Bishop of Mainz, Germany |
| 13 May | 56.0 | Died | Alessandro d’Este † | Cardinal, Bishop of Reggio Emilia, Italy |
| 39.3 | Appointed | François de Loménie, O.P. † | Bishop of Marseille, France |
| Born | Aleksander Kazimierz Sapieha † | | Bishop of Vilnius, Lithuania |
| 49.3 | Appointed | Jan Wężyk † | Bishop of Poznań, Poland | Archbishop of Gniezno, Poland |
| 19 May | 30.2 | Ordained Bishop | Pietro Francesco Costa † | Bishop of Albenga, Italy |
| 31.6 | Ordained Bishop | Francesco Maria Spinola, C.R. † | Bishop of Savona, Italy |
| 27 May | 59.4 | Ordained Bishop | Francesco Nori † | Bishop of San Miniato, Italy |
| 29 May | 79.4 | Confirmed | Alfonso López Gallo † | Bishop of Valladolid, Spain |
| Confirmed | Melchor de Moscoso y Sandoval † | Bishop of Segovia, Spain |
| 62.3 | Confirmed | Juan Torres de Osorio † | Bishop of Oviedo, Spain | Bishop of Valladolid, Spain |
| Jun | 50.4 | Ordained Bishop | Stanisław Łubieński † | Bishop of Lutsk (Łuck), Ukraine | Bishop of Płock, Poland |
| 2 Jun | 42.8 | Ordained Bishop | Pier Luigi Carafa (Sr.) † | Bishop of Tricarico, Italy | Cardinal, Bishop Emeritus |
| 32.4 | Appointed | Johann Christoph von Liechtenstein † | Bishop of Chiemsee, Germany |
| 3 Jun | | Born | Marcantonio Vincentini † | | Bishop Emeritus of Foligno, Italy |
| 8 Jun | 30.3 | Appointed | Giovanni Battista Maria Pallotta † | Apostolic Collector to Portugal | Cardinal, Cardinal-Bishop of Frascati |
| 15 Jun | 42.9 | Appointed | Pier Luigi Carafa (Sr.) † | Apostolic Nuncio to Germany | Cardinal, Bishop Emeritus of Tricarico, Italy |
| 68.4 | Resigned | Pietro Francesco Montorio † | Apostolic Nuncio to Germany | Bishop Emeritus of Nicastro, Italy |
| 23 Jun | | Died | François-Etienne Dulci, O.P. † | Archbishop of Avignon, France |
| 61.4 | Ordained Bishop | Miguel Santos de Sampedro † | Bishop of Solsona, Spain | Archbishop of Granada, Spain |
| 24 Jun | 44.4 | Ordained Bishop | Aimeric de Bragelone † | Bishop of Luçon, France | Bishop Emeritus |