| Date | Age | Bishop | Title |
|---|
| unknown | | Giovan Mario de Alessandri † | Bishop of Mileto, Italy |
| unknown | 70.0 | Nicolò Canelles (Canyelles) † | Bishop of Bosa, Italy |
| unknown | | Nunzio Antonio de Capriolis † | Bishop of Tricarico, Italy |
| unknown | | Pedro Coderos † | Archbishop of Otranto, Italy |
| unknown | | Gian Matteo Castaldo, O.S.B. † | Bishop of Pozzuoli, Italy |
| unknown | | Vincenzo de Doncelli (Donzelli), O.P. † | Bishop of Valva e Sulmona, Italy |
| unknown | 55.0 | Paolo Giovio (il Giovane) † | Bishop of Nocera de’ Pagani, Italy |
| unknown | | Aloisio Giustiniani † | Patriarch of Aquileia, Italy |
| unknown | | Basilio Gradi, O.S.B. † | Bishop of Stagno (Ston), Croatia |
| unknown | | Alfonso Graniero Avalos † | Bishop of La Plata o Charcas, Bolivia |
| unknown | | Giovanni Antonio Grignetta † | Bishop of San Marco (Argentano), Italy |
| unknown | | Jorge de Lemos, O.P. † | Bishop Emeritus of Funchal, Portugal |
| unknown | | Maurice MacBrien † | Bishop of Emly, Ireland |
| unknown | 94.0 | Nicola Majorano (Maggiorani) † | Bishop Emeritus of Molfetta, Italy |
| unknown | | Paolo Odescalchi † | Bishop Emeritus of Penne e Atri, Italy |
| unknown | | Anselmo Olivieri, O.F.M. Obs. † | Bishop of Vieste, Italy |
| unknown | | Costantino Piccioni, O.S.A. † | Bishop of Cortona, Italy |
| unknown | | Adam Pilchowski † | Bishop of Chełm, Poland |
| unknown | | João de Portugal † | Bishop of Guarda, Portugal |
| unknown | | Tarquinio Prisco † | Bishop of Cariati e Cerenzia, Italy |
| unknown | | Alessandro Ravali † | Bishop of Nicastro, Italy |
| unknown | | Pedro Vélez Guevara † | Bishop of Ciudad Rodrigo, Spain |
| unknown | | Paolo da Zara, O.P. † | Bishop of Shkodrë (Scutari), Albania |
| Jan | | Cesare Contardo † | Bishop of Sagone (Sagona), France |
| 7 Jan | | Sigismondo Saraceno † | Archbishop of Acerenza e Matera, Italy |
| 26 Jan | 55.0 | Robert de Berghes † | Bishop Emeritus of Liège, Belgium |
| 31 Jan | | Vincenzo Luchi (di Luca) † | Bishop of Ancona e Numana, Italy |
| 31 Jan | 71.0 | Benito Tocco, O.S.B. † | Bishop of Lérida, Spain |
| 6 Mar | 91.1 | Giovanni Tommaso Sanfelice † | Bishop of Venosa, Italy |
| 20 Mar | 54.2 | Jorge de Almeida † | Archbishop of Lisboa, Portugal |
| 3 Apr | 75.2 | Thomas Goldwell, C.R. † | Bishop of Saint Asaph, Wales, Great Britain |
| 10 Apr | 83.2 | Ugo Boncompagni † | Pope (Roma {Rome}, Italy) |
| 20 Apr | 58.3 | Mikołaj Pac † | Bishop of Kyiv (Kijów), Ukraine |
| 29 Apr | | Charles d’Ailleboust † | Bishop of Autun, France |
| 1 May | 59.1 | Niccolò Caetani di Sermoneta † | Cardinal, Administrator of Capua, Italy |
| 3 May | 34.4 | Heinrich von Sachsen-Lauenburg † | Archbishop-Elect of Bremen (and Hamburg), Germany |
| 16 May | 47.9 | Guido Luca Ferrero † | Cardinal, Bishop Emeritus of Vercelli, Italy |
| 17 May | 46.8 | Alberto Bolognetti † | Cardinal, Bishop of Massa Marittima, Italy |
| 18 May | | François de La Valette † | Bishop of Vabres, France |
| 19 May | 57.5 | Tomás Dacio (d’Anio) † | Bishop of Orihuela, Spain |
| 23 May | 58.2 | Marcin Gerstmann † | Bishop of Wrocław (Breslau), Poland |
| 10 Jun | | Girolamo Diedo † | Bishop Emeritus of Crema, Italy |
| 17 Jun | | Fernando Rueda † | Bishop of Islas Canarias {Canary Islands}, Spain |
| 25 Jun | | Cesare Gromis † | Bishop of Aosta, Italy |
| 28 Jun | 70.4 | Felipe Urríes Urríes, O.P. † | Bishop of Barbastro, Spain |
| 10 Jul | 84.5 | Georges d’Armagnac † | Cardinal, Archbishop Emeritus of Tours, France |
| 14 Jul | 52.5 | Gabriele Fiamma, C.R.S.A. † | Bishop of Chioggia, Italy |
| 18 Jul | 41.6 | Alessandro Riario † | Cardinal, Titular Patriarch of Alexandria {Alessandria} |
| Aug | | Marino Querini † | Bishop of Concordia (Sagittaria), Italy |
| 8 Aug | 30.6 | Wilhelm von Schenking zu Bevern † | Bishop-Elect of Osnabrück, Germany |
| 26 Aug | | Benedetto Manzoli † | Bishop of Reggio Emilia, Italy |
| 19 Sep | | François de Noailles † | Bishop Emeritus of Acqs (Dax), France |
| 30 Sep | | Juan Izquierdo, O.P. † | Bishop of Tortosa, Spain |
| Oct | | Cesare Busdrago † | Archbishop of Chieti, Italy |
| 6 Oct | | Charles de Roucy-Sissonne † | Bishop of Soissons, France |
| 6 Oct | 71.7 | Guglielmo Sirleto † | Cardinal, Bishop Emeritus of Squillace, Italy |
| 14 Oct | 62.7 | Richard Creagh † | Archbishop of Armagh, Ireland |
| 6 Nov | 38.5 | Lorenzo Campeggi † | Bishop of Cervia, Italy |
| 13 Nov | 76.8 | Cipriano Pallavicino † | Archbishop of Genova, Italy |
| 13 Nov | | Andrés Santos Quintana (de Sampedro) † | Archbishop of Zaragoza, Spain |
| 16 Nov | | Giulio (Egidio) Soperchio (Superchio), O. Carm. † | Bishop of Caorle, Italy |
| 28 Nov | | Maciej Wielicki, O.P. † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 29 Nov | 66.9 | Matthieu Cointerel † | Cardinal, Cardinal-Priest of Santo Stefano al Monte Celio |
| 29 Dec | | Costantino Barzellini, O.F.M. Conv. † | Bishop of Foligno, Italy |
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