| Date | Age | Bishop | Title |
| unknown | 49.3 | Antonio Celli, O.P. † | Bishop of Isola, Italy |
| unknown | | Bernardin Corneillan † | Bishop of Rodez, France |
| unknown | | Felix Crocca, O.F.M. Conv. † | Bishop of Acqui, Italy |
| unknown | 73.0 | Alonso de Franco y Luna † | Bishop of La Paz, Bolivia |
| unknown | | Ascenzio Guerrieri † | Bishop of Castellaneta, Italy |
| unknown | 67.0 | Bartol Kačić, O.F.M. † | Bishop of Makarska, Croatia |
| unknown | | Domenico Marengo, O.F.M. † | Bishop of Syros (e Milos), Greece |
| unknown | | Thomas Marnavich, O.F.M. † | Bishop of Bosnia, Croatia |
| unknown | 64.0 | Angelo Mascardo † | Bishop of Noli, Italy |
| unknown | 52.0 | Miguel de Torres, O.P. † | Bishop of Potenza, Italy |
| Jan | 49.0 | Lorenzo della Robbia † | Bishop of Fiesole, Italy |
| 11 Jan | | Adam Groß † | Auxiliary Bishop-Elect of Würzburg, Germany |
| 21 Jan | | Alessandro Filonardi † | Bishop of Aquino, Italy |
| 2 Feb | 70.6 | Juan Valenzuela Velázquez † | Bishop of Salamanca, Spain |
| 5 Feb | 52.4 | Johannes Bartholomäus Kobolt von Tambach † | Auxiliary Bishop of Passau, Germany |
| 13 Feb | 55.1 | Vincenzo Giustiniani † | Bishop of Brescia, Italy |
| 14 Feb | 86.2 | François de La Rochefoucauld † | Cardinal, Bishop Emeritus of Senlis, France |
| 19 Feb | 73.1 | Pier Paolo Crescenzi † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 1 Mar | | Stanisław Grochowski † | Archbishop of Lviv, Ukraine |
| 4 Mar | | Alessandro Gallo † | Bishop of Massa Lubrense, Italy |
| 9 May | | Alexander Sokołowski † | Bishop of Kyiv and Chernihiv (Kijów and Czernihow), Ukraine |
| 18 May | | Henricus Listolfi Maroni † | Bishop of Bazas, France |
| 18 Jun | | Henri d’Escoubleau de Sourdis † | Archbishop of Bordeaux, France |
| 10 Jul | 54.5 | Andrés Aguado, O.S.A. † | Bishop of Ariano, Italy |
| 23 Jul | 63.6 | Alessandro Rauli † | Bishop of Vico Equense, Italy |
| 24 Jul | 65.6 | Luis de Cañizares, O.M. † | Bishop of Comayagua, Honduras |
| 26 Aug | | Biagio Mandevi † | Bishop of Nona (Nin), Croatia |
| Oct | 50.8 | Gregorio Coppino, O.S.B. † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 2 Oct | 78.9 | Francesco Cennini de’ Salamandri † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 16 Oct | | Pedro Arce, O.S.A. † | Bishop of Cebu, Philippines |
| 25 Oct | 60.8 | Malachy O’Queely † | Archbishop of Tuam, Ireland |
| 3 Nov | | Giusto (Juste) Guérin, B. † | Bishop of Genève {Geneva}, Switzerland |
| 19 Nov | 47.7 | Consalvo Caputo † | Bishop of Catanzaro, Italy |
| Dec | 50.9 | Carolus Scaglia, Can. Reg. S.Geor † | Bishop of Trivento, Italy |
| 9 Dec | 48.9 | Pietro Antonio Spinelli † | Archbishop of Rossano, Italy |
| 23 Dec | 73.0 | Cesare Ventimiglia † | Bishop of Terracina, Priverno e Sezze, Italy |
| 28 Dec | 65.5 | Gaspar de Borja y Velasco † | Cardinal, Bishop of Albano, Italy |