| Date | Age | Event | Bishop | Title | Current Title |
| unknown | | Born | Andrés Aguado, O.S.A. † | Vallisoletan, Spain | Bishop of Ariano, Italy |
| 49.0 | Appointed | Malaquías Asso, O. Cist. † | Auxiliary Bishop of Zaragoza, Spain | Bishop of Jaca, Spain |
| 49.0 | Appointed | Malaquías Asso, O. Cist. † | Titular Bishop of Utica | Bishop of Jaca, Spain |
| Died | Belisario Baldevino † | Bishop of Larino, Italy |
| Died | Giambattista de Benedictis † | Bishop of Penne e Atri, Italy |
| Died | François de Bouliers † | Bishop of Fréjus, France |
| Died | Scipione Bozzuti † | Bishop of Lucera, Italy |
| Born | Marcantonio Bragadin † | Venezia | Cardinal, Bishop Emeritus of Vicenza, Italy |
| Died | Giovanni Battista Brugnatelli † | Bishop of Assisi, Italy |
| Born | Giuseppe Candido † | Syracusan | Bishop of Lipari, Italy |
| 50.0 | Resigned | Giovanni Battista Castrucci † | Archbishop of Chieti, Italy | Cardinal, Archbishop Emeritus |
| Died | Orazio Celsi † | Bishop of Melfi e Rapolla, Italy |
| 24.1 | Ordained Priest | Francesco Cennini de’ Salamandri † | Priest | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| Born | Diego Chueca † | Cálcena | Bishop of Teruel, Spain |
| Born | Hugo Eberhard von Cratz von Schraffenstein † | Engers | Bishop of Worms, Germany |
| Born | André Creusen † | Maastricht | Archbishop of Mechelen, Belgium |
| Born | Giovanni Battista Deti (Deto) † | Florence | Bishop of Anglona-Tursi, Italy |
| Born | Agazio di Somma † | Simeri | Bishop of Catanzaro, Italy |
| Died | Giovanni Antonio de Paola † | Bishop of Belcastro, Italy |
| Born | Sebastiano De Paoli † | Nepi | Bishop of Nepi e Sutri, Italy |
| Appointed | Francesco del Pozzo † | Bishop of Agrigento (Girgenti), Italy |
| Died | Paolo Maria della Rovere † | Bishop of Cagli, Italy |
| Born | Alexandre della Stufa (Lotteringhi) † | | Bishop Emeritus of Montepulciano, Italy |
| Born | Gennaro Filomarino, C.R. † | Naples | Bishop of Calvi Risorta, Italy |
| Died | Cesare Gambara † | Bishop of Tortona, Italy |
| Died | Pierre de Lambert † | Bishop of Saint-Jean-de-Maurienne, France |
| Died | Ercole Lamia † | Bishop of Alessano, Italy |
| Born | Diego López de la Vega † | Tortuera | Bishop of Coria, Spain |
| Died | Pio Loterio, O.S.B. † | Bishop of Fondi (Fundi), Italy |
| Died | Ludovico Majorino, C.R.L. † | Bishop of Castellammare di Stabia, Italy |
| Died | Pedro Maldonado † | Bishop of Ciudad Rodrigo, Spain |
| Resigned | Antonio Migliori † | Bishop of San Marco (Argentano), Italy | Bishop Emeritus |
| 26.1 | Appointed | Philibert François (Filiberto) Milliet de Faverges † | Bishop of Saint-Jean-de-Maurienne, France | Archbishop of Torino {Turin}, Italy |
| 17.3 | Professed | Johannes Pelking (Pelcking), O.F.M. Conv. † | Member of Order of Friars Minor Conventual | Auxiliary Bishop of Paderborn, Germany |
| Died | Pompilio Perotti † | Bishop of Guardialfiera (Guardia), Italy |
| Died | Girolamo Petroni † | Bishop of Terni, Italy |
| Born | Angelo Picchetti † | Montis Celii | Bishop of Nusco, Italy |
| Born | Paolo Piromalli, O.P. † | Siderno en Calabre | Bishop of Bisignano, Italy |
| Born | Giovanni della Robbia, O.P. † | Florentiae | Bishop of Bertinoro, Italy |
| Died | Pompeo Rocchi † | Bishop of Cavaillon, France |
| Died | Ercole Sacrati † | Bishop of Comacchio, Italy |
| Resigned | Annibale Saraceni † | Bishop of Lecce, Italy | Bishop Emeritus |
| Born | Alexander Sibilia † | Capuae | Bishop of Capri, Italy |
| Resigned | Gaspare Silingardi † | Bishop of Ripatransone, Italy | Bishop of Modena, Italy |
| Resigned | Bartolomeu Simões Pereira † | Prelate of São Sebastião do Rio de Janeiro, Brazil | Prelate Emeritus |
| Born | Francisco Sotomayor, O.C.S. Aug. † | Lamego | Auxiliary Bishop of Lisboa {Lisbon}, Portugal |
| Appointed | Pedro Suarez de Escobar, O.S.A. † | Bishop of Guadalajara, Jalisco, México | Bishop-Elect |
| Born | Marco Antonio Tomati † | Caravonica | Bishop Emeritus of Bitetto, France |
| Resigned | Pietrantonio Vicedomini † | Bishop of Avellino e Frigento, Italy | Bishop Emeritus |
| 26.4 | Ordained Priest | Nicolas Zoes (Zoesius) † | Priest | Bishop of ’s Hertogenbosch (Bois-le-Duc), Netherlands |
| 7 Jan | | Appointed | Mario Bolognini † | Archbishop of Salerno, Italy |
| 36.6 | Appointed | Benedetto Giustiniani † | Cardinal-Priest of San Marcello | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 54.0 | Appointed | Lorenzo Priuli † | Cardinal, Patriarch of Venezia {Venice}, Italy |
| Appointed | Bernardino Quirino, O.F.M. † | Bishop of Ardjisch (Arges; Argesch), Romania |
| Appointed | Francisco Robuster Sala † | Bishop of Elne, France | Bishop of Vic, Spain |
| 8 Jan | | Died | Ottaviano Pasqua † | Bishop of Gerace, Italy |
| 12 Jan | 32.6 | Confirmed | Andreas von Austria (Österreich) † | Coadjutor Bishop of Brixen {Bressanone}, Italy | Cardinal, Bishop of Konstanz {Constance}, Germany |
| 13 Jan | 53.0 | Died | Antonio Carafa † | Cardinal, Cardinal-Priest of Santi Giovanni e Paolo |
| 14 Jan | 26.4 | Appointed | Federico Borromeo (Sr.) † | Cardinal-Deacon of San Nicola in Carcere | Cardinal, Archbishop of Milano {Milan}, Italy |
| Appointed | Giovanni Leonardo Bottiglieri † | Bishop of Lettere (-Gragnano), Italy |
| 30.8 | Appointed | Ascanio Colonna † | Cardinal-Deacon of Santa Maria in Cosmedin | Cardinal, Cardinal-Bishop of Palestrina |
| 49.0 | Appointed | Agostino Cusani † | Cardinal-Priest of San Lorenzo in Panisperna | Cardinal, Cardinal-Priest of Santi Giovanni e Paolo |
| 55.6 | Appointed | Alessandro Ottaviano de’ Medici † | Cardinal-Priest of Santi Giovanni e Paolo | Pope (Roma {Rome}, Italy) |
| Appointed | Alfonso Gregorio † | Bishop of Albarracin, Spain | Archbishop of Zaragoza, Spain |
| 49.2 | Appointed | Domenico Pinelli (Sr.) † | Cardinal-Priest of San Crisogono | Cardinal, Bishop Emeritus of Fermo, Italy |
| 50.0 | Appointed | Antonio Maria Sauli † | Cardinal-Priest of Santo Stefano al Monte Celio | Cardinal, Bishop of Ostia (-Velletri), Italy |
| 30.3 | Installed | Paolo Emilio Sfondrati † | Cardinal-Priest of Santa Cecilia | Cardinal, Bishop of Cremona, Italy |
| 15 Jan | | Appointed | Pedro de Moya y Contreras † | Patriarch of West Indies, Spain | Archbishop of México, Federal District |
| 20 Jan | | Died | Giovanni Placido † | Bishop of Sessa Aurunca, Italy |
| 23 Jan | 48.5 | Confirmed | Kaspar von Seckendorff † | Bishop of Eichstätt, Germany |
| 29 Jan | 63.1 | Died | Marquard von Berg † | Bishop of Augsburg, Germany |
| 30 Jan | 43.1 | Appointed | Wojciech Baranowski † | Bishop of Płock, Poland | Archbishop of Gniezno, Poland |
| 51.4 | Appointed | Cesare Speciano (Speciani) † | Bishop of Cremona, Italy |
| Appointed | Flaminio Torricella † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 3 Feb | | Ordained Bishop | Giovanni Leonardo Bottiglieri † | Bishop of Lettere (-Gragnano), Italy |
| 8 Feb | 67.1 | Appointed | Giulio Canani † | Cardinal, Bishop of Modena, Italy |
| Appointed | Pietro Martire Ponzone † | Bishop of Novara, Italy |
| 39.1 | Appointed | Alfonso Visconti, C.O. † | Bishop of Cervia, Italy | Cardinal, Bishop of Spoleto, Italy |
| 13 Feb | | Appointed | Laurentius Laureti, O. Carm. † | Bishop of Adria, Italy |
| 60.1 | Appointed | Alfonso Paleotti † | Coadjutor Archbishop of Bologna, Italy | Archbishop |
| 60.1 | Appointed | Alfonso Paleotti † | Titular Archbishop of Corinthus | Archbishop of Bologna, Italy |
| Died | Vincenzo Torfanini † | Bishop of Rimini, Italy |
| Appointed | Alberto Valier † | Titular Bishop of Famagusta | Bishop of Verona, Italy |
| 14 Feb | | Resigned | François de Beaucaire de Péguillon † | Bishop of Metz, France | Bishop Emeritus |
| 17 Feb | | Died | François Thomé † | Bishop Emeritus of Saint-Malo, France |
| 18 Feb | | Appointed | Carlo Baldini † | Archbishop of Sorrento, Italy |
| Appointed | Vincenzo Calcio, O.P. † | Bishop of Venosa, Italy |
| Appointed | Pietro Ridolfi, O.F.M. Conv. † | Bishop of Senigallia, Italy |
| 25 Feb | 32.7 | Succeeded | Andreas von Austria (Österreich) † | Bishop of Brixen {Bressanone}, Italy | Cardinal, Bishop of Konstanz {Constance}, Germany |
| 3 Mar | | Died | Georgius Manzolus † | Bishop of Aversa, Italy |
| 6 Mar | 31.2 | Elevated to Cardinal | Ottavio Acquaviva d’Aragona (Sr.) † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 17.2 | Elevated to Cardinal | Odoardo Farnese † | Cardinal, Cardinal-Bishop of Frascati |
| 38.7 | Elevated to Cardinal | Ottaviano Paravicini † | Cardinal, Bishop Emeritus of Alessandria (della Paglia), Italy |
| 38.7 | Elevated to Cardinal | Flaminio Piatti † | Cardinal, Cardinal-Priest of Santa Maria della Pace |
| Appointed | Alessandro Riccardi † | Bishop of Sessa Aurunca, Italy |
| Appointed | Pedro Rojas Henríques, O.S.A. † | Bishop of Astorga, Spain | Bishop of Osma, Spain |
| Appointed | Gerolamo Vela † | Bishop of Larino, Italy |
| 11 Mar | 40.2 | Died | Bernhard von Waldeck † | Former Bishop-Elect of Osnabrück, Germany |
| 12 Mar | | Ordained Bishop | Alessandro Riccardi † | Bishop of Sessa Aurunca, Italy |
| 18 Mar | | Died | Juan Ruiz de Villarán † | Bishop of Lugo, Spain |
| 72.2 | Died | Giovanni Antonio Serbelloni † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 20 Mar | | Appointed | Ludovico Alferio † | Bishop of San Marco (Argentano), Italy |
| 56.2 | Appointed | Iñigo Avalos de Aragón, O.S. † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| Appointed | Francisco Avellaneda † | Archbishop of Acerenza e Matera, Italy |
| Appointed | Vincenzo Bonardo, O.P. † | Bishop of Gerace, Italy |
| 49.3 | Appointed | Michele (Bosco) Bonelli, O.P. † | Cardinal, Cardinal-Bishop of Albano |
| 67.2 | Appointed | Giulio Canani † | Cardinal-Priest of Sant’Anastasia | Cardinal, Bishop of Modena, Italy |
| 63.5 | Appointed | Tolomeo Gallio † | Cardinal-Bishop of Frascati | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 50.4 | Appointed | Alfonso Gesualdo di Conza (Gonza) † | Cardinal-Bishop of Ostia (e Velletri) | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 59.2 | Appointed | Ludovico Madruzzo † | Cardinal-Priest of San Lorenzo in Lucina | Cardinal, Bishop of Trento, Italy |
| Appointed | Orazio Montani (Montano) † | Bishop of Penne e Atri, Italy | Archbishop of Arles, France |
| Appointed | James O’Healy † | Archbishop of Tuam, Ireland |
| 68.5 | Appointed | Gabriele Paleotti † | Cardinal-Bishop of Sabina | Cardinal, Archbishop of Bologna, Italy |
| Appointed | Horatius Sanminiato † | Archbishop of Chieti, Italy |
| Appointed | Fernando de la Vega Fonseca † | Bishop of Córdoba, Spain |
| 21 Mar | | Died | Alexandre Canigiani † | Archbishop of Aix, France |
| 45.4 | Selected | Johann Otto von Gemmingen † | Bishop of Augsburg, Germany |
| 24 Mar | | Ordained Bishop | Alfonso Gregorio † | Bishop of Albarracin, Spain | Archbishop of Zaragoza, Spain |
| 60.2 | Ordained Bishop | Alfonso Paleotti † | Titular Archbishop of Corinthus | Archbishop of Bologna, Italy |
| 2 Apr | 49.4 | Ordained Bishop | Michele (Bosco) Bonelli, O.P. † | Bishop of Albano | Cardinal, Cardinal-Bishop |
| 5 Apr | 41.8 | Appointed | Francesco Maria Bourbon Del Monte Santa Maria † | Cardinal-Priest of Santi Quirico e Giulitta | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| Appointed | Giovanni Battista Comparini † | Bishop of Fondi (Fundi), Italy |
| Appointed | Giovanni Battista Costanzo † | Archbishop of Cosenza, Italy |
| 31.3 | Installed | Ottavio Acquaviva d’Aragona (Sr.) † | Cardinal-Deacon of San Giorgio in Velabro | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 23.8 | Installed | Charles de Lorraine-Vaudémont (III) † | Cardinal-Deacon of Sant’Agata de’ Goti | Cardinal, Administrator of Strasbourg, France |
| Died | Piotr Myszkowski † | Bishop of Kraków, Poland |
| Appointed | Jerónimo Manrique de Lara † | Bishop of Avila, Spain |
| Appointed | Pietro Orsini † | Bishop of Aversa, Italy |
| 43.3 | Resigned | Giovanni Evangelista Pallotta † | Archbishop of Cosenza, Italy | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 38.7 | Installed | Flaminio Piatti † | Cardinal-Deacon of Santa Maria in Domnica | Cardinal, Cardinal-Priest of Santa Maria della Pace |
| 53.3 | Resigned | Mariano Pierbenedetti † | Bishop of Martirano (Martoranum), Italy | Cardinal, Cardinal-Bishop of Frascati |
| Appointed | Giulio Cesare Salicini † | Bishop of Rimini, Italy |
| 15 Apr | 87.3 | Died | Gian Girolamo Albani † | Cardinal, Cardinal-Priest of San Giovanni a Porta Latina |
| 21 Apr | | Ordained Bishop | Ludovico Alferio † | Bishop of San Marco (Argentano), Italy |
| Ordained Bishop | Giovanni Battista Costanzo † | Archbishop of Cosenza, Italy |
| Ordained Bishop | Francisco Robuster Sala † | Bishop of Elne, France | Bishop of Vic, Spain |
| Ordained Bishop | Gerolamo Vela † | Bishop of Larino, Italy |
| 26 Apr | | Appointed | Bartolomeo Beccari, O.F.M. Conv. † | Bishop of Guardialfiera (Guardia), Italy |
| 44.5 | Appointed | Sancho Dávila Toledo † | Bishop of Cartagena (en España) | Bishop of Plasencia, Spain |
| Appointed | Paolo De Curtis, C.R. † | Bishop of Ravello, Italy | Bishop of Isernia, Italy |
| Appointed | Clemente Polito † | Bishop of Grosseto, Italy |
| Appointed | Paolo Sanvitale † | Bishop of Spoleto, Italy |
| 28 Apr | 59.3 | Died | Ippolito de’ Rossi † | Cardinal, Bishop of Pavia, Italy |
| 3 May | | Ordained Bishop | Giulio Cesare Salicini † | Bishop of Rimini, Italy |
| 5 May | | Ordained Bishop | Paolo Sanvitale † | Bishop of Spoleto, Italy |
| 7 May | | Died | Celso Paci † | Bishop of Castro [del Lazio], Italy |
| 10 May | | Appointed | Andrés de Ayardis † | Archbishop of Brindisi, Italy |
| 45.5 | Confirmed | Johann Otto von Gemmingen † | Bishop of Augsburg, Germany |
| Confirmed | Gilbert Genebrard, O.S.B. † | Archbishop of Aix, France |
| Appointed | Wawrzyniec Goślicki † | Bishop of Przemyśl, Poland | Bishop of Poznań, Poland |
| 72.6 | Appointed | Nicolás de Pellevé † | Cardinal, Archbishop of Reims, France |
| 57.2 | Appointed | St. Alessandro Maria Sauli, B. † | Bishop of Pavia, Italy |
| Appointed | Scipione Spina † | Bishop of Lecce, Italy |
| 15 May | | Appointed | Miler Cawell, O.S.A. † | Vicar Apostolic of Killala, Ireland |
| Appointed | Martín de Salvatierra † | Bishop of Ciudad Rodrigo, Spain |
| 20 May | | Died | Vincenzo Casali † | Bishop Emeritus of Massa Marittima, Italy |
| 26 May | | Ordained Bishop | Pedro Rojas Henríques, O.S.A. † | Bishop of Astorga, Spain | Bishop of Osma, Spain |
| 28 May | | Died | Giovanni Antonio Lazzari † | Bishop of Amelia, Italy |
| 29 May | | Appointed | Pompeo de Nobili † | Bishop of Ripatransone, Italy |
| 3 Jun | | Ordained Bishop | Scipione Spina † | Bishop of Lecce, Italy |
| 4 Jun | 16.4 | Professed | Antonio de Gouvea, O.S.A. † | Member of Order of St. Augustine | Titular Bishop of Cyrene |
| Ordained Bishop | Pompeo de Nobili † | Bishop of Ripatransone, Italy |
| 5 Jun | 22.9 | Appointed | Philipp Sigismund von Braunschweig-Lüneburg † | Bishop of Osnabrück, Germany | Bishop-Elect |
| 21 Jun | | Appointed | Fulvio Passerini † | Bishop of Avellino e Frigento, Italy | Bishop of Pistoia, Italy |