| Date | Age | Bishop | Title |
| unknown | | Marcantonio Alferio † | Bishop of Montemarano, Italy |
| unknown | | Domenico Carlo † | Bishop of Cefalonia e Zante, Greece |
| unknown | | Claudio de Curtis † | Bishop of Crotone (Cotrone), Italy |
| unknown | | Francisco de Val † | Archbishop of Cagliari, Italy |
| unknown | | Heinrich Fabricius † | Auxiliary Bishop of Speyer, Germany |
| unknown | | Nicolò Grana † | Bishop of Anglona-Tursi, Italy |
| unknown | | Giovanni Evangelista Pelleo, O.F.M. Conv. † | Bishop of Sant’Agata de’ Goti, Italy |
| unknown | 51.0 | Horatius Raparius † | Bishop of Alessano, Italy |
| unknown | | Manuel de Seabra (Leabra) † | Bishop of Miranda (do Douro), Portugal |
| unknown | | Scipione de Tolfa † | Archbishop of Acerenza e Matera, Italy |
| 5 Jan | 71.0 | Feliciano Ninguarda, O.P. † | Bishop of Como, Italy |
| 12 Jan | | Gaspare Visconti † | Archbishop of Milano {Milan}, Italy |
| 23 Jan | | Alberto Capriano † | Bishop of Alba (Pompea), Italy |
| 25 Jan | | Piotr Kostka † | Bishop of Chelmno (Culma, Kulm), Poland |
| 2 Feb | | Giovanni Andrea Croce † | Bishop of Tivoli, Italy |
| 15 Feb | 61.5 | Mark Sittich von Hohenems (Altemps) † | Cardinal, Bishop Emeritus of Konstanz {Constance}, Germany |
| 4 Mar | | Jean Dave † | Bishop of Namur {Namen}, Belgium |
| 2 Apr | 52.7 | Kaspar von Seckendorff † | Bishop of Eichstätt, Germany |
| 4 May | 64.1 | Hughes de Loubenx de Verdalle, O.S.Io.Hieros. † | Cardinal, Cardinal-Deacon of Santa Maria in Portico (Octaviae) |
| 24 May | 80.1 | Juan Ruiz Agüero † | Bishop of Zamora, Spain |
| 9 Jun | 70.0 | Francisco Sarmiento Mendoza † | Bishop of Jaén, Spain |
| 11 Aug | | Georg von Schönenberg † | Bishop of Worms, Germany |
| 15 Aug | | Miguel Cercito Bereterra † | Bishop of Barbastro, Spain |
| 18 Aug | 54.6 | Giovanni Battista Castrucci † | Cardinal, Archbishop Emeritus of Chieti, Italy |
| 1 Sep | | Juan Fernández Vadillo † | Bishop of Cuenca, Spain |
| 1 Sep | | Jerónimo Manrique de Lara † | Bishop of Avila, Spain |
| 2 Sep | | Annibale de Capua † | Archbishop of Napoli {Naples}, Italy |
| 4 Sep | | Andrés de Ayardis † | Archbishop of Brindisi, Italy |
| 24 Sep | | Nicolas Langelier (Lancelier) † | Bishop of Saint-Brieuc, France |
| 25 Sep | | James O’Healy † | Archbishop of Tuam, Ireland |
| 14 Oct | 61.8 | Owen (Audoenus) Lewis (Ludovisi) † | Bishop of Cassano all’Jonio, Italy |
| 4 Nov | | Francesco Cattani da Diacceto † | Bishop of Fiesole, Italy |
| 15 Nov | | Cesare Bellocchio † | Bishop of Telese o Cerreto Sannita, Italy |
| 18 Dec | | Caesar Benzio † | Bishop of Asti, Italy |
| 20 Dec | 64.2 | Costanzo de Sarnano (Torri), O.F.M. Conv. † | Cardinal, Bishop Emeritus of Vercelli, Italy |