| Date | Age | Bishop | Title |
| unknown | | Giovan Mario de Alessandris † | Bishop of Mileto, Italy |
| unknown | | Nunzio Antonio de Capriolis † | Bishop of Tricarico, Italy |
| unknown | | Pedro Coderos † | Archbishop of Otranto, Italy |
| unknown | | Vincenzo de Doncelli (Donzelli), O.P. † | Bishop of Valva, Italy |
| unknown | | Paolo Giovio (il Giovane) † | Bishop of Nocera de’ Pagani, 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 | | Francisco Guaresma, O.F.M. † | Bishop of Tanger, Morocco |
| unknown | | Jorge de Lemos, O.P. † | Bishop Emeritus of Funchal, Portugal |
| unknown | | Paolo Odescalchi † | Bishop Emeritus of Penne-Atri, Italy |
| unknown | | Costantino Piccioni, O.S.A. † | Bishop of Cortona, Italy |
| unknown | | Adam Pilchowski † | Bishop of Chełm, Poland |
| unknown | | Tarquinio Prisco † | Bishop of Cariati-Cerenzia, Italy |
| unknown | | Alessandro Ravadio † | Bishop of Nicastro, Italy |
| unknown | | Sigismondo Saraceno † | Archbishop of Acerenza e Matera, Italy |
| unknown | | Pedro Vélez Guevara † | Bishop of Ciudad Rodrigo, Spain |
| 31 Jan | | Vincenzo Luchi (di Luca) † | Bishop of Ancona e Numana, Italy |
| 31 Jan | 71.1 | Benito Tocco, O.S.B. † | Bishop of Lérida, Spain |
| 6 Mar | | Giovanni Tommaso Sanfelice † | Bishop of Venosa, Italy |
| 3 Apr | 84.3 | Thomas Goldwell, C.R. † | Bishop of Saint Asaph, Wales, Great Britain |
| 10 Apr | 83.3 | Ugo Boncompagni † | Pope (Roma {Rome}, Italy) |
| 1 May | 59.2 | Niccolò Caetani di Sermoneta † | Cardinal, Archbishop of Capua, Italy |
| 3 May | 34.5 | Heinrich von Sachsen-Lauenburg † | Archbishop-Elect of Bremen (and Hamberg), Germany |
| 16 May | 48.0 | Guido Luca Ferrero † | Cardinal, Bishop Emeritus of Vercelli, Italy |
| 17 May | 46.9 | Alberto Bolognetti † | Cardinal, Bishop of Massa Marittima, Italy |
| 19 May | 57.6 | Tomás Dacio (d’Anio) † | Bishop of Orihuela, Spain |
| 23 May | | 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 | 70.5 | Felipe Urríes Urríes, O.P. † | Bishop of Barbastro, Spain |
| 10 Jul | 84.5 | Georges d’Armagnac † | Cardinal, Archbishop Emeritus of Tours, France |
| 14 Jul | | Gabriel Fiamma, O.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 |
| 30 Sep | | Juan Izquierdo, O.P. † | Bishop of Tortosa, Spain |
| Oct | | Caesar Busdragus † | Archbishop of Chieti, Italy |
| 6 Oct | 71.8 | Guglielmo Sirleto † | Cardinal, Bishop Emeritus of Squillace, Italy |
| 14 Oct | | Richard Creagh † | Archbishop of Armagh, Ireland |
| 16 Oct | | Giulio (Egidio) Soperchio † | Bishop of Caorle, Italy |
| 6 Nov | | Lorenzo Campeggi † | Bishop of Cervia, Italy |
| 13 Nov | | Andrés Santos Quintana (de Sampedro) † | Archbishop of Zaragoza, Spain |
| 28 Nov | | Maciej Wielicki, O.P. † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 29 Nov | 66.9 | Matthieu Cointerel † | Cardinal, Cardinal-Priest of S. Stefano al Monte Celio |
| 29 Dec | | Constantinus Barzellini, O.F.M. Conv. † | Bishop of Foligno, Italy |