| Date | Age | Bishop | Title |
|---|
| unknown | | Philip Phillips † | Archbishop of Tuam, Ireland |
| 5 Jan | 52.6 | Cyprian Stecki † | Bishop |
| 14 Jan | 71.6 | Antonio Casali † | Cardinal, Cardinal-Deacon of Santa Maria ad Martyres |
| 26 Jan | 59.9 | Georgius Giunchi † | Bishop of Bar (Antivari), Montenegro |
| 28 Jan | 54.7 | Vitale Giuseppe de’ Buoi † | Bishop of Faenza, Italy |
| 2 Feb | 58.1 | Pellegrino Consalvi † | Bishop of Fano, Italy |
| 6 Feb | 46.8 | Jacques-Joseph-François de Vogüé † | Bishop of Dijon, France |
| 10 Feb | 51.5 | Franciscus Carolus Palma † | Auxiliary Bishop of Kalocsa, Hungary |
| 15 Feb | 75.3 | Anton Ignaz von Fugger-Glött † | Bishop of Regensburg, Germany |
| 5 Mar | 77.0 | Francesco Maria Forlani † | Bishop of Civita Castellana e Orte, Italy |
| 6 Mar | 57.5 | Antonio María de los Reyes Almada, O.F.M. † | Bishop of Sonora, México |
| 14 Mar | 65.8 | Antonio Andrés López Arroyo, O.F.M. † | Bishop of Astorga, Spain |
| 21 Mar | 75.2 | Giovanni Battista Mami † | Bishop of Sarsina, Italy |
| 3 Apr | 68.7 | Tommaso Maria Ghilini † | Cardinal, Cardinal-Priest of Santa Maria sopra Minerva |
| 4 Apr | 79.5 | Francesco d’Elci † | Cardinal, Cardinal-Deacon of Sant’Angelo in Pescheria |
| 5 Apr | 84.4 | Tommaso Mazza † | Bishop of Castellammare di Stabia, Italy |
| 22 May | 80.4 | Gottfried Xaver von Laimbeckhoven, S.J. † | Bishop of Nanking [Nanjing], China |
| 12 Jun | 76.1 | Ciriaco Vecchioni † | Bishop of Recanati e Loreto, Italy |
| 1 Jul | 63.5 | François-Fiacre de Grave † | Bishop of Valence, France |
| 7 Jul | 75.1 | Pedro Cortez y Larraz † | Bishop Emeritus of Tortosa, Spain |
| 26 Jul | 54.9 | Franciscus Salesius (Eustache) Federl, O.C.D. † | Vicar Apostolic of Malabar, India |
| 1 Aug | 90.8 | St. Alfonso Maria de’ Liguori, C.SS.R. † | Bishop Emeritus of Sant’Agata de’ Goti, Italy |
| 2 Sep | 70.3 | Antonio Jorge y Galván † | Archbishop of Granada, Spain |
| 8 Sep | 74.3 | Domenico Monti † | Archbishop of Urbino, Italy |
| 18 Sep | | James Keefe † | Bishop of Kildare and Leighlin, Ireland |
| 23 Sep | 67.7 | Georges-Louis Phélypeaux d’Herbault † | Archbishop of Bourges, France |
| 7 Oct | 68.3 | Karl Johann von Herberstein † | Bishop of Ljubljana, Slovenia |
| 17 Oct | 66.3 | Franz Xaver von Adelmann von Adelmannsfelden † | Auxiliary Bishop of Augsburg, Germany |
| 11 Nov | | Anthony Blake † | Archbishop of Armagh, Ireland |
| Dec | 69.2 | Baltasar Yusta Navarro † | Bishop of Córdoba, Spain |
| 3 Dec | | Simon Quinn † | Coadjutor Bishop of Cloyne, Ireland |
| 15 Dec | 59.2 | Basilio Tomás Sancho Hernando (de Santas Justa y Rufina), Sch. P. † | Archbishop of Manila, Philippines |
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