| Date | Age | Bishop | Title |
| unknown | | Antonio † | Archbishop of Santa Severina, Italy |
| unknown | | Barnabo de Bennatis † | Bishop of Assisi, Italy |
| unknown | 31.0 | Louis Camanias, O.F.M. † | Bishop of Ottana, Italy |
| unknown | | Toussaint Castellani, O. Carm. † | Auxiliary Bishop of Reims, France |
| unknown | | Palamides de Cuncto, O.S.C. † | Bishop of Minori, Italy |
| unknown | | Giovanni Gianderoni, O.S.A. † | Bishop of Massa Marittima, Italy |
| unknown | | Jean Goberti † | Bishop of Orange, France |
| unknown | | Yvo Guillen Brito † | Bishop of Dromore, Ireland |
| unknown | | Martin Krzeszowski † | Bishop of Lutsk (Łuck), Ukraine |
| unknown | | Cristoforo Magno † | Bishop of Castro [di Sardegna], Italy |
| unknown | | Ross Maguire † | Bishop Emeritus of Clogher, Ireland |
| unknown | | Domenico Manfredi de Riparolio, O.S.B. † | Bishop of Ivrea, Italy |
| unknown | | Pietro Marcius, O.F.M. † | Bishop of Scardona (Skradin), Croatia |
| unknown | | Vittore Marcello † | Archbishop of Nicosia, Cyprus |
| unknown | | Jean de Mareuil † | Bishop of Uzés, France |
| unknown | | Richard Martin † | Bishop of Saint David’s, Wales, Great Britain |
| unknown | | Hermann Molitoris, O.P. † | Auxiliary Bishop of Halberstadt, Germany |
| unknown | | Nicholas O’Hennesy, O. Cist. † | Bishop of Waterford and Lismore, Ireland |
| unknown | | Odon Ozic, O.S.A. † | Bishop of Vaison, France |
| unknown | | Gabriele Piccolomini, O.F.M. † | Bishop of Chiusi, Italy |
| unknown | | Nicola de Pineo † | Bishop of Castro di Puglia, Italy |
| unknown | | Giovanni Antonio Pitito Saponaria, O.F.M. Conv. † | Bishop of Marsico Nuovo, Italy |
| unknown | | Tommaso de Regibus † | Bishop of Acqui, Italy |
| unknown | | Jean de Sallinis, O.F.M. † | Bishop of Bosa, Italy |
| unknown | 41.0 | Frédéric de Saluces † | Administrator of Carpentras, France |
| unknown | | Jacobello de Seminaria, O.F.M. † | Bishop of Bova, Italy |
| unknown | | Giacomo Trugloni † | Bishop of Trogir (Traù), Croatia |
| Jan | | Ludovico de Pinnis † | Bishop of Nardò, Italy |
| Jan | | Godefridus Yerwerd, O.S.B. † | Auxiliary Bishop Emeritus of Utrecht, Netherlands |
| 11 Jan | | John Laing (Layne) † | Bishop of Glasgow, Scotland, Great Britain |
| 22 Jan | 80.0 | Guillaume d’Estouteville, O.S.B. † | Cardinal, Archbishop of Rouen, France |
| 29 Jan | | Pascal Dufour † | Bishop of Pamiers, France |
| 5 Feb | | Hubert Yffz (de Rommersdorf), O. Praem. † | Auxiliary Bishop of Trier, Germany |
| 16 Mar | | Jean Huet † | Bishop of Toulon, France |
| Apr | 43.2 | Andrzej Oporowski † | Bishop of Włocławek (Kujawy, Kalisze), Poland |
| Apr | | Pietro Orseoli † | Archbishop of Santa Severina, Italy |
| 8 Apr | | Peder Nielsen Lodehat † | Bishop of Ribe, Denmark |
| 13 May | | Louis de Melun † | Bishop of Meaux, France |
| 22 Jun | 75.4 | Jean Rolin † | Cardinal, Bishop of Autun, France |
| 26 Jun | 65.4 | Isnard de Grasse † | Bishop of Grasse, France |
| Aug | | Francesco de Arenis † | Archbishop of Brindisi, Italy |
| 28 Aug | | Jean de Lescar † | Archbishop of Auch, France |
| 30 Aug | | James Levingston † | Bishop of Dunkeld, Scotland, Great Britain |
| Sep | | Matthias O’Griffith † | Bishop of Killaloe, Ireland |
| 2 Sep | 60.6 | Ausias Despuig † | Cardinal, Archbishop of Monreale, Italy |
| 21 Sep | 73.7 | Friedrich Sesselmann † | Bishop of Lebus, Germany |
| 26 Sep | | Erasmus Perchinger, O.F.M. † | Auxiliary Bishop of Freising, Germany |
| 7 Oct | 53.7 | Ferry de Clugny † | Cardinal, Bishop of Tournai {Doornik}, Belgium |
| 21 Oct | 39.8 | Francesco Gonzaga † | Cardinal, Administrator of Mantova, Italy |
| Nov | | John Roger † | Bishop of Raphoe, Ireland |
| 9 Nov | | Urbain de Chevron Villette † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| 24 Nov | | William Dudley † | Bishop of Durham, England, Great Britain |
| 24 Dec | | Antonio Ricci † | Bishop of Lecce, Italy |
| 26 Dec | | Stefano Grube † | Archbishop of Riga, Latvia |
| 29 Dec | | Jean de Montalembert, O.S.B. † | Bishop of Montauban, France |