| Date | Age | Bishop | Title |
| unknown | | Giovanni Francesco de Mirto † | Bishop Emeritus of Ruvo (Ruo)(di Puglia), Italy |
| unknown | | Sigismondo Mangiaruga † | Bishop of Oppido Mamertina, Italy |
| unknown | | Gerolamo Melchiori † | Bishop Emeritus of Macerata, Italy |
| unknown | | John O’Cahasy, O.F.M. † | Bishop of Killala, Ireland |
| unknown | | Andrés Pérez † | Bishop of Ciudad Rodrigo, Spain |
| unknown | | Nicholas Skerret † | Archbishop of Tuam, Ireland |
| unknown | | Bernardino Suriano † | Archbishop of Corfù, Greece |
| 17 Jan | | Cesare Bovio † | Bishop of Nardò, Italy |
| 17 Jan | | Vincenzo Cisoni, O.P. † | Bishop of Sant’Agata de’ Goti, Italy |
| 23 Jan | | Anton Resch, O.P. † | Auxiliary Bishop of Würzburg, Germany |
| Feb | | Jean Baptiste Le Gras † | Bishop of Tréguier, France |
| 25 Feb | | Vincenzo Castaneola Marino † | Bishop of Alba (Pompea), Italy |
| Mar | | Pedro de la Peña, O.P. † | Bishop of Quito, Ecuador |
| 2 Mar | 65.3 | Fulvio Giulio della Corgna, O.S.Io.Hieros. † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 16 Mar | | Jean de Vassé † | Bishop of Lisieux, France |
| 27 Apr | | Paolo Fusco † | Bishop of Sarno, Italy |
| 30 Jul | | Nicola Secadenari † | Bishop of Bisceglie, Italy |
| 19 Aug | 64.6 | Melchior Miguel Carneiro Leitão, S.J. † | Patriarch of Ethiopia |
| 21 Aug | | Alfonso Delgado † | Bishop of Astorga, Spain |
| 22 Aug | | Giovanni Battista Castelli † | Bishop of Rimini, Italy |
| 22 Aug | 61.7 | Marcantonio Maffei † | Cardinal, Archbishop Emeritus of Chieti, Italy |
| 30 Aug | | Marco Medici, O.P. † | Bishop of Chioggia, Italy |
| 8 Sep | | Marco Fedele Gonzaga † | Bishop of Mantova, Italy |
| 18 Sep | 58.7 | Francesco Bossi † | Bishop of Novara, Italy |
| 9 Oct | | Martin Baudouin † | Bishop of Ypres (Ieper), Belgium |
| 9 Oct | | Sebastián Lartaún † | Bishop of Cuzco, Peru |
| 16 Oct | | Diego de Simancas † | Bishop of Zamora, Spain |
| 24 Nov | 76.8 | René de Birague † | Cardinal, Bishop Emeritus of Lodève, France |
| 19 Dec | 56.7 | Zaccaria Delfino † | Cardinal, Bishop Emeritus of Hvar (Lesina), Croatia |
| 31 Dec | 50.2 | Ludovico de Torres (I) † | Archbishop of Monreale, Italy |