| Date | Age | Event | Bishop | Title | Current Title |
| unknown | 62.0 | Died | Giovan Donato Giannoni Alitto † | Bishop of Ruvo (Ruo)(di Puglia), Italy |
| Ordained Bishop | Jacob IV Awad † | Bishop of Tripoli del Libano {Tarabulus} (Maronite) | Patriarch of Antiochia {Antioch} (Maronite), Lebanon |
| Born | Antun Becić † | Buduen | Bishop of Hvar (Lesina), Croatia |
| Born | Charles-François-Alexandre Cardevac de Gouy d’Havrincourt † | Bonchy | Bishop of Perpignan-Elne, France |
| 44.6 | Died | Filippo de Cordova (de’ duchi di Suessa) † | Bishop of Guardialfiera (Guardia), Italy |
| 29.0 | Ordained Priest | Jean d’Yse (d’Ize) de Saléon † | Priest | Archbishop of Vienne, France |
| 90.0 | Died | Gregory Fallon † | Bishop of Clonmacnoise, Ireland |
| 66.0 | Died | Sebastian Glavinich † | Bishop of Senj (-Modruš), Croatia |
| Born | Ross Roe MacMahon (McMahon) † | Enagh | Archbishop of Armagh, Ireland |
| 72.0 | Resigned | Victor-Augustin Méliand (Melrand) † | Bishop of Alet, France | Bishop Emeritus |
| Born | José Morales Blanco † | Fuente la Encina | Bishop of Palencia, Spain |
| Born | Louis-François Néel de Christot † | Rouen | Bishop of Sées, France |
| Died | Francisco Núñez de la Vega, O.P. † | Bishop of Chiapas (Ciudad Real de Chiapas), México |
| Died | Ignatius Rosa † | Bishop of Andros, Greece |
| Born | François-Ernest de Salm-Reifferscheid † | Vienna, Austria | Bishop of Tournai {Doornik}, Belgium |
| 66.0 | Died | Alfonso Santacruz † | Auxiliary Bishop of Toledo, Spain |
| 54.8 | Appointed | Fabrizio Spada † | Archpriest of the Arcibasilica di San Giovanni in Laterano {Saint John Lateran Basilica} | Cardinal, Cardinal-Bishop of Palestrina |
| 56.0 | Died | Carolus de Tilly † | Bishop of Monopoli, Italy |
| 4 Jan | 53.0 | Died | Francesco di Sobre Casas, O.P. † | Archbishop of Cagliari, Italy |
| 7 Jan | 34.8 | Appointed | Giulio Piazza † | Apostolic Nuncio to Switzerland | Cardinal, Archbishop (Personal Title) of Faenza, Italy |
| 8 Jan | 53.1 | Died | Claude Le Tonnelier de Breteuil † | Bishop of Boulogne (-Sur-Mer), France |
| 14 Jan | 29.2 | Selected | Márton Brajkovićs † | Bishop of Senj (-Modruš), Croatia | Bishop of Zagreb (Agram), Croatia |
| 15 Jan | 82.0 | Died | Girolamo Borghesi, O.S.B. † | Bishop of Pienza, Italy |
| 17 Jan | | Born | Antoni Gorczyński † | Bialen | Auxiliary Bishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 69.0 | Died | Giovanni Battista Pallotta † | Bishop of Foligno, Italy |
| 20 Jan | 81.1 | Died | Giannicolò Conti † | Cardinal, Bishop of Ancona e Numana, Italy |
| Born | Ferdinand Julius von Troyer † | Innsbruck, Italy | Cardinal, Bishop of Olomouc (Olmütz), Czech Republic |
| 24 Jan | | Born | Felipe Martín Ovejero † | Villamartín | Bishop of Oviedo, Spain |
| 26 Jan | 64.1 | Died | François-Ignace de Baglion du Saillant, C.O. † | Bishop of Poitiers, France |
| Born | Petrus Antonius Raimondi † | Cutro | Bishop of Capaccio, Italy |
| 27 Jan | 72.7 | Appointed | Gasparo Carpegna † | Cardinal-Bishop of Sabina | Cardinal, Prefect of the Roman Curia - Other |
| 41.7 | Appointed | Bisanzio Fili † | Bishop of Oppido Mamertina, Italy | Bishop of Ostuni, Italy |
| 63.1 | Appointed | Luis Manuel Fernández de Portocarrero-Bocanegra y Moscoso-Osorio † | Cardinal-Bishop of Palestrina | Cardinal, Archbishop of Toledo, Spain |
| 53.0 | Appointed | Carlo Giuseppe Morozzo, O. Cist. † | Bishop of Saluzzo, Italy |
| 62.3 | Appointed | Domenico Pacifico † | Bishop of Teano, Italy |
| 74.6 | Appointed | Paluzzo Paluzzi Altieri Degli Albertoni † | Cardinal-Bishop of Porto e Santa Rufina | Cardinal, Archbishop Emeritus of Ravenna, Italy |
| 46.8 | Appointed | Fabrizio Paolucci † | Archbishop (Personal Title) of Ferrara, Italy | Cardinal, Secretary of the Secretariat of State |
| 39.8 | Appointed | Luigi Ruzzini † | Bishop of Bergamo, Italy |
| 43.2 | Appointed | José de Sousa Castelo Branco † | Bishop of Funchal, Portugal | Bishop Emeritus |
| 29 Jan | | Died | Ernst August von Braunschweig-Lüneburg † | Bishop of Osnabrück, Germany |
| Feb | 42.1 | Appointed | Antoine Girard de La Bornat (La Bournat) † | Bishop of Boulogne (-Sur-Mer), France | Bishop of Poitiers, France |
| 2 Feb | 41.8 | Ordained Bishop | Bisanzio Fili † | Bishop of Oppido Mamertina, Italy | Bishop of Ostuni, Italy |
| 62.3 | Ordained Bishop | Domenico Pacifico † | Bishop of Teano, Italy |
| 28.1 | Ordained Priest | Stefan Bogusław Rupniewski † | Priest | Bishop of Lutsk (Łuck), Ukraine |
| 39.8 | Ordained Bishop | Luigi Ruzzini † | Bishop of Bergamo, Italy |
| 8 Feb | | Appointed | Denis Delfino † | Coadjutor Patriarch of Aquileia, Italy | Patriarch |
| Appointed | Denis Delfino † | Titular Bishop of Lorea | Patriarch of Aquileia, Italy |
| 9 Feb | 25.2 | Ordained Priest | Joseph Anton von Delmestri von Schönberg † | Priest of Trieste, Italy | Bishop |
| 17 Feb | 33.4 | Installed | Henri-Charles du Camboust de Coislin † | Bishop of Metz, France |
| 22 Feb | 23.0 | Ordained Priest | Antonio Maria Bacigalupi † | Priest | Bishop of Ventimiglia, Italy |
| 24 Feb | 27.9 | Ordained Priest | Pantaleon Bruns, O.S.B. † | Priest of Order of Saint Benedict | Auxiliary Bishop of Paderborn, Germany |
| 28 Feb | | Born | Siegmund Christoph von Schrattenbach † | Graz | Archbishop of Salzburg, Austria |
| Mar | | Born | João de Azevedo † | Beja | Bishop of Portalegre, Portugal |
| Born | Franjo Thauszy † | Zagabrien | Bishop of Zagreb (Agram), Croatia |
| 4 Mar | 68.2 | Died | Jan Stanisław Witwicki † | Bishop of Poznań, Poland |
| 8 Mar | | Born | Pierre-Jules-César de Rochechouard-Montigny † | Montigny | Bishop Emeritus of Bayeux, France |
| 10 Mar | 32.7 | Confirmed | Denis-François Bouthillier de Chavigny † | Bishop of Troyes, France | Archbishop of Sens, France |
| 37.4 | Appointed | Gianantonio Davia † | Archbishop (Personal Title) of Rimini, Italy | Cardinal, Bishop Emeritus |
| Appointed | Carlo Loffredo, C.R. † | Archbishop of Capua, Italy |
| 41.4 | Appointed | Pietro Spínola, O.F.M. † | Bishop of Ajaccio, France |
| 15 Mar | 23.4 | Ordained Priest | Stanisław Józef Hozjusz † | Priest | Bishop of Poznań, Poland |
| 24.5 | Ordained Priest | Franciszek Kaznowski † | Priest | Auxiliary Bishop of Poznań, Poland |
| 24.2 | Ordained Priest | Giovanni Battista Sanna † | Priest | Bishop of Ales e Terralba, Italy |
| 24.8 | Ordained Priest | Johann Anton Wallreuther † | Priest of Mainz, Germany | Auxiliary Bishop of Worms, Germany |
| 16 Mar | | Born | Giovanni Battista Miceli † | Longobardi | Bishop of Cassano all’Jonio, Italy |
| 41.4 | Ordained Bishop | Pietro Spínola, O.F.M. † | Bishop of Ajaccio, France |
| 19 Mar | 29.1 | Ordained Priest | Jacques Rambert † | Priest | Bishop of Aosta, Italy |
| 24 Mar | 42.9 | Appointed | Michelangelo dei Conti † | Apostolic Nuncio to Portugal | Pope (Roma {Rome}, Italy) |
| 29 Mar | 43.2 | Selected | Jean-Baptiste-Armand Bazin de Besons † | Archbishop of Bordeaux, France | Archbishop of Rouen, France |
| 35.8 | Appointed | Louis-Gaston Fleuriau d’Armenonville † | Bishop of Aire, France | Bishop of Orléans, France |
| 42.2 | Selected | Antoine Girard de La Bornat (La Bournat) † | Bishop of Poitiers, France |
| 31 Mar | | Died | Miguel Quijada, O. Cist. † | Bishop of Mondoñedo, Spain |
| Apr | | Appointed | Gerardus de Vera † | Titular Bishop of Philadelphia in Arabia |
| Born | István Pucz † | Mihovlje | Bishop of Beograd (-Smederevo), Serbia |
| 3 Apr | 53.3 | Died | Johann Franz Christoph von Talmberg † | Bishop of Hradec Králové, Czech Republic |
| 5 Apr | | Born | Charles de Saint-Albin † | Paris | Archbishop of Cambrai, France |
| 7 Apr | 39.7 | Installed | Giorgio Cornaro † | Cardinal-Priest of Santi XII Apostoli | Cardinal, Bishop of Padova {Padua}, Italy |
| 47.3 | Appointed | Manuel Plácido de Quirós de Porras, O.S.B. † | Bishop of Antequera, Oaxaca, México |
| 67.6 | Confirmed | Johann Martin von Eyb † | Bishop of Eichstätt, Germany |
| 35.3 | Appointed | Muzio Gaeta (Sr.) † | Archbishop of Bari (-Canosa), Italy |
| 40.1 | Confirmed | François de Mailly † | Archbishop of Arles, France | Cardinal, Archbishop of Reims, France |
| 34.6 | Appointed | Tommaso Ruffo † | Titular Archbishop of Nicaea | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 82.5 | Appointed | Giambattista Spínola (Sr.) † | Cardinal-Priest of Santa Maria in Trastevere | Cardinal, Archbishop Emeritus of Genova, Italy |
| 12 Apr | 69.3 | Died | Giovanni Vincenzo Lucchesini, O.S.M. † | Bishop of Assisi, Italy |
| 13 Apr | 29.0 | Ordained Priest | Álvaro Pires de Castro Noronha † | Priest | Bishop of Portalegre, Portugal |
| 35.3 | Ordained Bishop | Muzio Gaeta (Sr.) † | Archbishop of Bari (-Canosa), Italy |
| 34.6 | Ordained Bishop | Tommaso Ruffo † | Titular Archbishop of Nicaea | Cardinal, Archbishop Emeritus of Ferrara, Italy |
| 14 Apr | 17.4 | Selected | Karl Joseph Ignaz von Lothringen † | Bishop of Osnabrück, Germany | Archbishop-Elect of Trier, Germany |
| 20 Apr | 32.8 | Ordained Bishop | Denis-François Bouthillier de Chavigny † | Bishop of Troyes, France | Archbishop of Sens, France |
| 22 Apr | 17.6 | Professed | Matthaeus Hodierna, O.S.B. † | Member of Order of Saint Benedict | Bishop of Valva, Italy |
| 24 Apr | | Born | Dominicus Pasqualigo † | Venetiis | Bishop of Scardona (Skradin), Italy |
| 26 Apr | | Born | Diego Antonio de Parada † | Huete, Spain | Archbishop of Lima, Peru |
| 54.1 | Selected | Pierre de Langle † | Bishop of Boulogne (-Sur-Mer), France |
| 1 May | | Born | Jacques-Bonne Gigault de Bellefonds † | Château de Montifray, Beaumont-la-Roche | Archbishop of Paris, France |
| 83.3 | Died | Antoine-Pierre de Grammont, O.S.B. † | Archbishop of Besançon, France |
| 4 May | | Ordained Bishop | Denis Delfino † | Titular Bishop of Lorea | Patriarch of Aquileia, Italy |
| 11 May | 40.2 | Ordained Bishop | François de Mailly † | Archbishop of Arles, France | Cardinal, Archbishop of Reims, France |
| 16 May | 32.4 | Appointed | Simone Aleotti † | Bishop of Civita Castellana e Orte, Italy |
| 45.0 | Installed | Vincenzo Grimani † | Cardinal, Cardinal-Deacon of Sant’Eustachio |
| 47.6 | Appointed | Johann Peter von Quentell † | Auxiliary Bishop of Strasbourg, France | Auxiliary Bishop of Münster, Germany |
| 47.6 | Appointed | Johann Peter von Quentell † | Titular Bishop of Hadrianopolis in Haemimonto | Auxiliary Bishop of Münster, Germany |
| 18 May | 32.4 | Ordained Bishop | Simone Aleotti † | Bishop of Civita Castellana e Orte, Italy |
| 19 May | 73.4 | Died | Konstanty Samuel Lipski † | Archbishop of Lviv, Ukraine |
| 24 May | 24.0 | Ordained Priest | Archangelus Feni, O.P. † | Priest of Order of Friars Preachers | Former Archbishop-Elect of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 24.2 | Ordained Priest | Carlo Maria Giuseppe Fornari † | Priest | Bishop Emeritus of Albenga, Italy |
| 23.6 | Ordained Priest | Sergius Pola † | Priest | Titular Bishop of Famagusta |
| 34.2 | Ordained Priest | Manuel Tercero Rozas, O.S.A. † | Priest of Order of St. Augustine | Auxiliary Bishop of Sevilla {Seville}, Spain |
| Jun | 68.4 | Died | Dionisio Petra, O.S.B. † | Bishop of Capri, Italy |
| 5 Jun | 70.2 | Died | Domenico Minio † | Bishop of Caorle, Italy |
| Born | Giuseppe Filippo Porporato † | Piasco | Bishop of Saluzzo, Italy |
| 6 Jun | 50.4 | Selected | Andrzej Chryzostom Załuski † | Bishop of Warmia (Ermland), Poland |
| 8 Jun | 67.8 | Ordained Bishop | Johann Martin von Eyb † | Bishop of Eichstätt, Germany |
| 10 Jun | 56.8 | Died | Vincenzo Maria de Rossi, O.F.M. Conv. † | Bishop of Penne e Atri, Italy |
| 11 Jun | | Born | Giovanni Domenico Santucci † | Cosignano | Bishop of Acquapendente, Italy |
| 20 Jun | | Born | Juan Antonio Oruña † | Colindres | Bishop of Osma, Spain |
| 26 Jun | 46.5 | Confirmed | David-Nicolas Bertier † | Bishop of Blois, France |
| 29 Jun | 28.5 | Ordained Priest | Gottfried Langwerth von Simmern † | Priest of Regensburg, Germany | Auxiliary Bishop |
| 75.1 | Died | Paluzzo Paluzzi Altieri Degli Albertoni † | Cardinal, Archbishop Emeritus of Ravenna, Italy |
| 30 Jun | 40.9 | Resigned | Marcello d’Aste † | Secretary of the Congregation of Bishops and Regulars | Cardinal, Apostolic Nuncio to Germany |