| Date | Age | Bishop | Title |
| unknown | 66.0 | Pietro Antonio Di Capua † | Archbishop of Otranto, Italy |
| unknown | | Antonio de Angelis † | Bishop of Massa Marittima, Italy |
| unknown | | Giovanni Ludovico da Campania † | Bishop of Mottola (Motula), Italy |
| unknown | | Agostino Folignatti (Molignatus) † | Bishop of Bertinoro, Italy |
| unknown | | Gregorio Forbicini † | Bishop of Strongoli, Italy |
| unknown | | Robert de Pellevé † | Bishop of Pamiers, France |
| unknown | | Romolo de Valentibus † | Bishop of Conversano, Italy |
| 3 Mar | | Adriano Fuscone † | Bishop of Aquino, Italy |
| 19 Mar | | Bertrando de Romanis † | Bishop of Fréjus, France |
| Apr | | Orazio Montegranelli † | Bishop of Fossombrone, Italy |
| 29 Apr | 54.5 | Diego de Landa, O.F.M. † | Bishop of Yucatán (Mérida), México |
| 22 Jun | 43.5 | David Kölderer von Burgstall † | Bishop of Regensburg, Germany |
| 23 Jul | | Bernardo de Albuquerque, O.P. † | Bishop of Antequera, Oaxaca, México |
| 24 Jul | 62.6 | Benedetto Lomellini † | Cardinal, Bishop of Anagni, Italy |
| 26 Jul | | Alessandro Ruffino † | Bishop of Melfi e Rapolla, Italy |
| 27 Jul | | Pietro Camaiani † | Bishop of Ascoli Piceno, Italy |
| 5 Aug | 75.3 | Stanislaw Hosius (Hozjusz) † | Cardinal, Bishop of Warmia (Ermland), Poland |
| 13 Aug | | Bl. Patrick O’Healy, O.F.M. † | Bishop of Mayo, Ireland |
| 23 Aug | | Miguel Jerónimo Morell † | Bishop of Urgell, Spain |
| 23 Aug | 71.6 | Francisco Pacheco de Villena (Toledo) † | Cardinal, Archbishop of Burgos, Spain |
| 11 Sep | | Pomponio Cotta † | Bishop of Novara, Italy |
| 13 Sep | | Diego Deza Tello † | Bishop of Jaén, Spain |
| 20 Sep | | Gonzalo Herrera Olivares † | Auxiliary Bishop of Burgos, Spain |
| 25 Sep | 70.5 | Gregorio Antonio Gallo de Andrade † | Bishop of Segovia, Spain |
| Nov | | Giovanni Luigi Guarini † | Bishop of Aquino, Italy |
| 8 Dec | | Gerolamo Federici † | Bishop of Lodi, Italy |
| 31 Dec | 75.0 | Walerian Protasewicz † | Bishop of Vilnius, Lithuania |