| Date | Age | Bishop | Title |
| unknown | | Sansone de Cayano † | Bishop of Marsico Nuovo, Italy |
| unknown | | Domenico de Dominicis † | Bishop of Brescia, Italy |
| unknown | | Patrick Graham † | Bishop Emeritus of Saint Andrews, Scotland, Great Britain |
| unknown | | João Manuel Ferras † | Bishop of Guarda, Portugal |
| unknown | | Giovanni Orsini † | Archbishop of Trani, Italy |
| unknown | | Martin Pedro † | Bishop of Lamego, Portugal |
| unknown | | Gabriele Pontangeli † | Bishop of Lettere (-Gragnano), Italy |
| unknown | | Gisberto Tolomei † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| unknown | | Andrea Veroli † | Bishop of Camerino, Italy |
| 29 Jan | | John Smith † | Bishop of Llandaff, Wales, Great Britain |
| 1 Feb | 43.6 | Cristoforo della Rovere † | Cardinal, Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| 1 Mar | 80.2 | Marco Cattaneo, O.P. † | Bishop of Alessandria (della Paglia), Italy |
| 5 Apr | | John Booth † | Bishop of Exeter, England, Great Britain |
| 18 Jun | | Rodrigo de Vergara † | Bishop of León, Spain |
| 3 Jul | 63.5 | Angelo Capranica † | Cardinal, Cardinal-Bishop of Palestrina |
| 24 Jul | 73.1 | Giovanni Battista Mellini † | Cardinal, Bishop of Urbino, Italy |
| 1 Aug | 61.6 | Matthias von Rammung † | Bishop of Speyer, Germany |
| 4 Aug | | William Grey † | Bishop of Ely, England, Great Britain |
| 8 Sep | | Tommaso Vincenzi † | Bishop of Pesaro, Italy |
| 25 Sep | 63.4 | Pedro Ferris † | Cardinal, Bishop of Tarazona, Spain |
| 25 Dec | | Johannes Hutter, O.F.M. † | Auxiliary Bishop of Würzburg, Germany |