| Date of Death | Deceased Bishops (70) |
| 1906.01.07 | |
| 1906.01.08 | |
| 1906.01.19 | Metropolitan Archbishop of Sevilla (Spain) (1895.12.02 – 1906.01.19) |
| 1906.01.25 | Cardinal-Priest of S. Croce in Gerusalemme (1889.05.27 – 1906.01.25) Metropolitan Archbishop of Mechelen (Belgium) (1884.03.24 – 1906.01.25) |
| 1906.02.10 | Cardinal-Priest of S. Pietro in Vincoli (1896.06.25 – 1906.02.10) |
| 1906.02.11 | Archbishop-Bishop emeritus of Pontremoli (Italy) (1874.12.21 – 1889.01) |
| 1906.02.15 | Cardinal-Priest of S. Pancrazio (1895.12.02 – 1906.02.15) Archbishop of Ancona e Umana (Italy) (1904.09.14 – 1906.02.15) |
| 1906.03.05 | |
| 1906.03.06 | Bishop emeritus of Guastalla (Italy) (1896.11.30 – 1897.04.13) |
| 1906.03.08 | |
| 1906.03.09 | Metropolitan Archbishop of Halifax (Canada) (1882.12.01 – 1906.03.09) |
| 1906.03.12 | Bishop of Sankt Gallen (Switzerland) ([1882.05.25] 1882.07.03 – 1906.03.12) |
| 1906.03.13 | |
| 1906.03.18 | |
| 1906.03.21 | |
| 1906.03.27 | |
| 1906.03.31 | Metropolitan Archbishop of Fermo (Italy) (1895.11.29 – 1906.03.31) |
| 1906.04.02 | Vicar Apostolic of Eastern Tonking (Vietnam) (1883.05.29 – 1906.04.02) |
| 1906.04.05 | Vicar Apostolic of Dutch Guyana–Suriname (Suriname) (1889.06.06 – 1906.04.05) |
| 1906.04.07 | Vicar Apostolic of Casanare (Colombia) (1895.12.02 – 1906.04.07) |
| 1906.04.13 | Bishop of Bagnoregio (Italy) (1896.06.22 – 1906.04.13) |
| 1906.04.14 | Cardinal-Priest of S. Maria in Cosmedin pro hac vice Title (1903.11.12 – 1906.04.14) |
| 1906.04.21 | Cardinal-Priest of S. Maria Nuova (1898.03.24 – 1906.04.21) Metropolitan Archbishop of Rennes (France) (1893.06.15 – 1906.04.21) |
| 1906.04.30 | Metropolitan Archbishop of La Plata (Bolivia) (1898.02.25 – 1906.04.30) |
| 1906.05.11 | Bishop of Saint-Brieuc (France) ([1889.08.28] 1889.12.30 – 1906.05.11) |
| 1906.05.12 | Metropolitan Archbishop of Bombay (India) (1891.12.06 – 1906.05.12) |
| 1906.05.14 | Bishop of Basel (Switzerland) ([1888.07.11] 1888.09.28 – 1906.05.14) |
| 1906.05.15 | |
| 1906.05.19 | Archbishop of Barletta (Italy) (1898.03.24 – 1906.05.19) Metropolitan Archbishop of Trani (Italy) (1898.03.24 – 1906.05.19) |
| 1906.05.24 | |
| 1906.06.01 | |
| 1906.06.08 | Auxiliary Bishop emeritus of Palestrina (Italy) (1880.02.27 – 1889.04.09) |
| 1906.06.11 | Bishop of Manchester (USA) (1904.04.18 – 1906.06.11) |
| 1906.06.16 | Auxiliary Bishop of Chełmno (Poland) (1905.10.03 – 1906.06.16) |
| 1906.06.27 | Metropolitan Archbishop of Tokyo 東京 (Japan) (1891.06.15 – 1906.06.27) |
| 1906.07.04 | |
| 1906.07.04 | Auxiliary Bishop of Bologna (Italy) (1886.01.15 – 1906.07.04) |
| 1906.07.12 | Bishop of Saint-Flour (France) ([1892.04.02] 1892.07.11 – 1906.07.12) |
| 1906.07.17 | Bishop of Fulda (Germany) ([1898.07.18] 1898.08.31 – 1906.07.17) |
| 1906.07.20 | |
| 1906.07.26 | |
| 1906.08.02 | Bishop emeritus of Orvieto (Italy) (1871.10.27 – 1882.10.02) |
| 1906.08.04 | |
| 1906.08.07 | |
| 1906.08.08 | |
| 1906.08.15 | |
| 1906.08.16 | Bishop of Regensburg (Germany) ([1858.01.27] 1858.03.18 – 1906.08.16) |
| 1906.08.19 | |
| 1906.08.20 | Metropolitan Archbishop of Santo Domingo (Dominican Republic) (1885.07.03 – 1906.08.20) |
| 1906.08.20 | Auxiliary Bishop of Napoli (Italy) (1898.09.24 – 1906.08.20) |
| 1906.08.20 | |
| 1906.08.28 | Coadjutor Vicar Apostolic emeritus of Northern Shaanxi 陝西北境 (China) (1886.08.24 – 1900.04.19) |
| 1906.08.30 | Vicar Apostolic of Tarapacá (Chile) (1895.06.12 – 1906.08.30) |
| 1906.09.09 | Vicar Apostolic of Central Oceania (Tonga) (1879.05.09 – 1906.09.09) |
| 1906.09.16 | Bishop of Soissons (France) ([1898.03.22] 1898.03.24 – 1906.09.16) |
| 1906.09.28 | Bishop of La Rochelle (France) ([1901.04.05] 1901.04.18 – 1906.09.28) |
| 1906.10.14 | Bishop of Tarquinia (Italy) (1882.01.24 – 1906.10.14) Bishop of Civitavecchia (Italy) (1882.01.24 – 1906.10.14) |
| 1906.10.19 | Vicar Apostolic of Southwestern Chi-Li 直隸西南 (China) (1891.07.28 – 1906.10.19) |
| 1906.10.30 | |
| 1906.11.02 | Archbishop-Bishop of Portalegre (Portugal) (1888.06.01 – 1906.11.02) |
| 1906.11.14 | |
| 1906.11.24 | Metropolitan Archbishop of Poznań (Poland) (1891.12.14 – 1906.11.24) Metropolitan Archbishop of Gniezno (Poland) (1891.12.14 – 1906.11.24) |
| 1906.12.01 | Auxiliary Bishop of Santiago (Chile) (1899.06.22 – 1906.12.01) |
| 1906.12.08 | |
| 1906.12.10 | |
| 1906.12.13 | Titular Archbishop of Cæsarea Ponti (1898.01.13 – 1906.12.13) |
| 1906.12.22 | |
| 1906.12.23 | Metropolitan Archbishop of Sevilla (Spain) (1906.12.06 – 1906.12.23) |
| 1906.12.29 | Cardinal-Deacon of S. Maria ad Martyres (1901.04.18 – 1906.12.29) Secretary emeritus of Sacred Congregation for Extraordinary Ecclesiastical Affairs (1896.08.14 – 1901.04.15) |
| 1906.12.29 | Cardinal-Deacon of S. Maria in Domnica (1901.04.18 – 1906.12.29) Pro-Prefect of Congregation for Sacred Rites (1904.01.28 – 1906.12.29) |
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