| Date | Age | Bishop | Title |
|---|
| unknown | | Martius Andreucci † | Bishop of Trogir (Traù), Croatia |
| unknown | 71.0 | Francisco de Arriba † | Bishop-Elect of Ciudad Rodrigo, Spain |
| unknown | 61.0 | Michele Bonzi, O.F.M. † | Bishop of Ravello e Scala, Italy |
| unknown | | Achille Caracciolo † | Bishop of Potenza, Italy |
| unknown | 48.0 | Carlo Catalani † | Bishop of Crotone (Cotrone), Italy |
| unknown | 75.0 | Juan Cuenca † | Bishop of Cádiz, Spain |
| unknown | | Gregorio Del Bufalo † | Bishop of Calvi Risorta, Italy |
| unknown | | Simon Feuerstein † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| unknown | | Honorius Griffagni, O.S.B. † | Bishop of Montepeloso, Italy |
| unknown | | Bálint Lépes † | Bishop-Elect of Győr (Raab), Hungary |
| unknown | 54.0 | Lucio de Morra † | Archbishop of Otranto, Italy |
| unknown | 59.0 | Francesco Mottini † | Bishop of Brugnato, Italy |
| unknown | | Octavius Saraceni † | Bishop of Sovana (Soana), Italy |
| unknown | | Jerónimo Tiedra Méndez, O.P. † | Archbishop of La Plata o Charcas, Bolivia |
| Jan | 74.0 | Giovanni (Giulio) della Torre † | Bishop of Krk (Veglia), Croatia |
| 21 Feb | 92.1 | Vespasien Gribaldi † | Archbishop Emeritus of Vienne, France |
| 21 Feb | 80.1 | Jacques Martin, O.S.B. † | Bishop of Senez, France |
| 27 Feb | 51.1 | Charles de Haqueville † | Bishop of Soissons, France |
| 1 Mar | 78.1 | Francisco López de Mendoza † | Bishop of Sigüenza, Spain |
| 19 Mar | 54.7 | Philipp Sigismund von Braunschweig-Lüneburg † | Bishop-Elect of Osnabrück, Germany |
| 4 Apr | | Petrus Salinates, O.F.M. Obs. † | Bishop of Sardica (Sredek, Sofia), Bulgaria |
| 21 Apr | 49.3 | Nicolas Coëffeteau, O.P. † | Auxiliary Bishop of Metz, France |
| 27 Apr | 47.1 | Éric de Lorraine, O.F.M. Cap. † | Bishop Emeritus of Verdun, France |
| 6 May | | Valentin Lépes † | Archbishop of Kalocsa, Hungary |
| 16 May | 77.3 | António (de Santa Maria) Lencastre, O.S.A. † | Bishop of Leiria, Portugal |
| 20 May | 70.3 | Leonardo Mocenigo † | Bishop of Ceneda, Italy |
| 23 May | | Giulio Monterenzi † | Bishop of Faenza, Italy |
| 25 May | 53.3 | Jean-Jacques du Sault † | Bishop of Acqs (Dax), France |
| 27 May | 61.4 | Paolo Filomarino, C.R. † | Bishop of Caiazzo, Italy |
| 2 Jun | 52.4 | Alessandro Damasceni Peretti † | Cardinal, Cardinal-Bishop of Albano |
| 4 Jul | 48.5 | Diego Secco, S.J. † | Coadjutor Patriarch of Ethiopia |
| 8 Jul | 69.4 | Alessandro Ludovisi † | Pope (Roma {Rome}, Italy) |
| Aug | 54.5 | Uberto Testa † | Bishop of Pula (Pola), Croatia |
| 12 Aug | 45.6 | Stefano Pignatelli † | Cardinal, Cardinal-Priest of Santa Maria in Via |
| 16 Aug | 63.9 | Jean de Vieuxpont † | Bishop of Meaux, France |
| 19 Aug | 53.6 | Giacomo Serra † | Cardinal, Cardinal-Priest of Santa Maria della Pace |
| 24 Aug | 80.6 | Antonmaria Sauli † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 30 Aug | 59.6 | Martin Alphonso Mexia de Tovar † | Bishop of Coimbra, Portugal |
| Sep | 59.6 | Agostino Cassandra, O.F.M. Conv. † | Bishop of Gravina (di Puglia), Italy |
| 1 Sep | 49.6 | Marco Antonio Gozzadini † | Cardinal, Bishop of Faenza, Italy |
| 1 Sep | 49.6 | Eugene Matthews † | Archbishop of Dublin, Ireland |
| 6 Sep | 56.6 | Francesco Sacrati † | Cardinal, Bishop of Cesena, Italy |
| 7 Sep | 72.0 | Lothar von Metternich † | Archbishop of Trier, Germany |
| 30 Sep | 46.7 | Cesare Gherardi † | Cardinal, Bishop of Camerino, Italy |
| 13 Oct | 61.7 | Juan Alvarez Zapata, O. Cist. † | Bishop of Solsona, Spain |
| 31 Oct | | Alessandro Boccabarile † | Bishop of Ortona a Mare e Campli, Italy |
| 31 Oct | | Alfonso Pisani † | Archbishop of Santa Severina, Italy |
| Nov | 61.8 | Juan Molina Alvarez † | Bishop of León, Spain |
| Nov | 41.8 | Giovanni Battista Roviglioni † | Bishop of Troia, Italy |
| 4 Nov | 54.8 | Charles de Rousseau † | Bishop of Mende, France |
| 12 Nov | 43.8 | St. Jozafat Kuncewicz, O.S.B.M. † | Archbishop of Połock (Polotsk) (Ukrainian), Belarus |
| 16 Nov | 43.8 | Gabriele Naro (Nari), O.P. † | Bishop of San Marco (Argentano), Italy |
| 19 Dec | 48.9 | Andrzej Opaliński † | Bishop of Poznań, Poland |
| 20 Dec | 89.5 | Pedro Castro Quiñones † | Archbishop of Sevilla {Seville}, Spain |
| 25 Dec | 58.9 | Lucio Sanseverino † | Cardinal, Archbishop of Salerno, Italy |
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