| Date of Death | Deceased Bishops (63) |
| 1923.01.03 | Titular Archbishop of Nicæa (1921.11.21 – 1923.01.03) |
| 1923.01.06 | |
| 1923.01.09 | |
| 1923.01.09 | Bishop of Saint-Brieuc (France) (1906.07.13 – 1923.01.09) |
| 1923.01.20 | |
| 1923.01.27 | |
| 1923.01.29 | Bishop emeritus of Beja (Portugal) (1907.12.19 – 1919.12.15) |
| 1923.01.31 | |
| 1923.02.04 | Cardinal-Priest of S. Sisto (1898.03.24 – 1923.02.04) Metropolitan Archbishop of Napoli (Italy) (1898.03.24 – 1923.02.04) |
| 1923.02.04 | |
| 1923.02.14 | Cardinal-Priest of S. Bartolomeo all’Isola (1901.04.18 – 1923.02.14) |
| 1923.02.17 | Vicar Apostolic of Northern Manchuria 滿州北境 (China) (1898.05.16 – 1923.02.17) |
| 1923.02.18 | Metropolitan Archbishop of Kalocsa (Hungary) (1914.05.25 – 1923.02.18) |
| 1923.03.07 | Bishop of La Rochelle (France) (1906.11.27 – 1923.03.07) |
| 1923.03.17 | Bishop of Saint Joseph (USA) (1893.06.19 – 1923.03.17) |
| 1923.03.17 | |
| 1923.03.20 | Metropolitan Archbishop of Lviv (Ukraine) (1900.12.17 – 1923.03.20) |
| 1923.03.22 | Bishop of Port Augusta (Australia) (1906.08.18 – 1923.03.22) |
| 1923.03.25 | Metropolitan Archbishop of Puebla de los Ángeles (Mexico) (1919.01.24 – 1923.03.25) |
| 1923.03.31 | Metropolitan Archbishop of Popayán (Colombia) (1907.04.18 – 1923.03.31) |
| 1923.04.08 | Metropolitan Archbishop of Buenos Aires (Argentina) (1900.08.24 – 1923.04.08) |
| 1923.04.09 | |
| 1923.04.09 | Bishop of Galway and Kilmacduagh (Ireland) (1909.04.29 – 1923.04.09) |
| 1923.04.19 | Vicar Apostolic of British Honduras (Belize) (1899.08.17 – 1923.04.19) |
| 1923.05.02 | Vicar Apostolic of Batavia (Indonesia) (1898.05.20 – 1923.05.02) |
| 1923.05.03 | Coadjutor Vicar Apostolic emeritus of Yunnan 雲南 (China) (1895.03.30 – 1907.01) |
| 1923.05.21 | Bishop of Viviers (France) ([1876.06.07] 1876.06.26 – 1923.05.21) |
| 1923.05.23 | Coadjutor Vicar Apostolic of Western Tonking (Vietnam) (1911.06.27 – 1923.05.23) |
| 1923.06.02 | Archbishop-Bishop of Diarbekir of the Chaldeans (Turkiye) (1897.06.06 – 1923.06.02) |
| 1923.06.04 | Cardinal-Priest of S. Maria del Popolo (1920.04.22 – 1923.06.04) Metropolitan Archbishop of Zaragoza (Spain) (1901.12.16 – 1923.06.04) |
| 1923.06.08 | Bishop of Huajuapan de León (Mexico) (1903.11.13 – 1923.06.08) |
| 1923.06.17 | Bishop of Saint-Hyacinthe (Canada) (1905.12.16 – 1923.06.17) |
| 1923.07.02 | |
| 1923.07.02 | |
| 1923.07.17 | |
| 1923.07.22 | Auxiliary Bishop of München und Freising (Germany) (1921.06.13 – 1923.07.22) |
| 1923.07.27 | Cardinal-Deacon of S. Maria in Domnica (1916.12.07 – 1923.07.27) Secretary emeritus of Sacred Congregation for the Oriental Churches (1917.11.29 – 1922) |
| 1923.07.28 | Metropolitan Archbishop of Durango (Mexico) (1909.08.07 – 1923.07.28) |
| 1923.07.31 | Vicar Apostolic emeritus of Southern Manchuria 南滿 (China) (1901.02.21 – 1920.07.01) |
| 1923.08.10 | Cardinal-Priest of S. Maria in Via (1911.11.27 – 1923.08.10) Metropolitan Archbishop of Torino (Italy) (1897.09.18 – 1923.08.10) |
| 1923.08.17 | Titular Archbishop of Theodosiopolis ante Apri of the Bulgarians ([1906.12.22] 1907.01.08 – 1923.08.17) |
| 1923.08.21 | |
| 1923.08.27 | Bishop of Saint-Jean-de-Maurienne (France) (1906.02.21 – 1923.08.27) |
| 1923.09.04 | |
| 1923.09.11 | |
| 1923.09.11 | |
| 1923.09.20 | |
| 1923.09.28 | Auxiliary Bishop of Ajaccio (France) (1922.02.17 – 1923.09.28) |
| 1923.09.29 | Metropolitan Archbishop of Olomouc (Czechia) (1921.03.10 – 1923.09.29) |
| 1923.10.03 | Bishop of Constantine (Algeria) (1917.01.02 – 1923.10.03) |
| 1923.10.17 | Auxiliary Bishop of Köln (Germany) (1922.11.11 – 1923.10.17) |
| 1923.10.19 | |
| 1923.10.24 | |
| 1923.11.10 | |
| 1923.11.24 | Bishop emeritus of Nitra (Slovakia) (1911.03.18 – 1920.11.13) |
| 1923.11.25 | Metropolitan Archbishop of Genova (Italy) (1921.11.21 – 1923.11.25) |
| 1923.11.26 | |
| 1923.12.01 | Bishop of Oradea Mare (Romania) (1911.04.20 – 1923.12.01) |
| 1923.12.03 | |
| 1923.12.06 | |
| 1923.12.18 | |
| 1923.12.19 | Vicar Apostolic of Hankou 漢口 (China) (1909.07.24 – 1923.12.19) |
| 1923.12.26 | Bishop emeritus of Cortona (Italy) (1901.12.16 – 1923.04.30) |
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