| Date of Death | Deceased Bishops (58) |
| 1955.01.04 | |
| 1955.01.08 | Vicar Apostolic emeritus of Port Elizabeth (South Africa) (1939.06.13 – 1948.12.09) |
| 1955.01.15 | Auxiliary Bishop of Făgăraş şi Alba Iulia of the Romanians (Romania) (1949 – 1955.01.15) |
| 1955.01.18 | Bishop of Tiruvalla of the Syro-Malankara (India) (1950.07.25 – 1955.01.18) |
| 1955.01.19 | Auxiliary Bishop of München und Freising (Germany) (1943.04.10 – 1955.01.19) |
| 1955.01.28 | Titular Bishop of Apollonias (1952.01.27 – 1955.01.28) |
| 1955.02.03 | Bishop of Saint-Jean-de-Québec (Canada) (1934.05.12 – 1955.02.03) |
| 1955.02.04 | Vicar Apostolic emeritus of New Hebrides (Vanuatu) (1939.07.11 – 1954.12) |
| 1955.02.15 | Auxiliary Bishop of Napoli (Italy) (1938.04.13 – 1955.02.15) |
| 1955.02.26 | Bishop emeritus of Cali (Colombia) (1927.04.13 – 1947.11.13) |
| 1955.03.02 | Metropolitan Archbishop of Auch (France) (1934.12.24 – 1955.03.02) |
| 1955.03.25 | Vicar Apostolic of Sassandra (Cote d’Ivoire) (1940.04.09 – 1955.03.25) |
| 1955.03.29 | Metropolitan Archbishop of Bamberg (Germany) (1943.01.24 – 1955.03.29) |
| 1955.03.30 | Metropolitan Archbishop of Évora (Portugal) (1920.07.24 – 1955.03.30) |
| 1955.04.05 | Bishop of Quetzaltenango, Los Altos (Guatemala) (1928.06.30 – 1955.04.05) |
| 1955.04.14 | |
| 1955.04.15 | Vicar Apostolic of Thái Bính (Vietnam) (1942.02.24 – 1955.04.15) |
| 1955.04.27 | Titular Archbishop of Leotopolis in Pamphylia (1949.11.25 – 1955.04.27) |
| 1955.05.08 | |
| 1955.05.12 | Metropolitan Archbishop of Goiás (Brazil) (1932.11.18 – 1955.05.12) |
| 1955.05.19 | Patriarch of Antioch of the Maronites (Lebanon) ([1932.01.08] 1933.03.13 – 1955.05.19) |
| 1955.05.27 | Metropolitan Archbishop of Teresina (Brazil) (1952.08.09 – 1955.05.27) |
| 1955.05.30 | Metropolitan Archbishop of Zaragoza (Spain) (1924.12.16 – 1955.05.30) |
| 1955.06.11 | Vicar Apostolic of Phnom Penh (Cambodia) (1937.12.02 – 1955.06.11) |
| 1955.06.14 | Vicar Apostolic emeritus of Baie d’Hudson (Canada) (1931.12.15 – 1942.12.18) |
| 1955.06.19 | Metropolitan Archbishop of Vilnius (Lithuania) (1926.06.24 – 1955.06.19) |
| 1955.06.20 | Bishop emeritus of Taubaté (Brazil) (1936.08.08 – 1941.11.08) |
| 1955.06.28 | Vicar Apostolic of Archipelago of the Navigators (Samoa) (1953.11.16 – 1955.06.28) |
| 1955.07.27 | Bishop of Santiago de Cabo Verde (Cabo Verde) (1941.01.28 – 1955.07.27) |
| 1955.07.27 | |
| 1955.08.10 | |
| 1955.08.10 | Bishop of La Rochelle (France) (1938.03.07 – 1955.08.10) |
| 1955.08.13 | |
| 1955.08.19 | Auxiliary Bishop of Hvar–Brač–Vis (Croatia) (1955.05.14 – 1955.08.19) |
| 1955.08.22 | Abbot Ordinary of San Paolo fuori le Mura (Italy) (1929.07.26 – 1955.08.22) |
| 1955.09.08 | Cardinal-Priest of S. Clemente (1946.10.12 – 1955.09.08) Metropolitan Archbishop of Utrecht (Netherlands) (1936.02.06 – 1955.09.08) |
| 1955.09.08 | Bishop of Portland in Maine (USA) (1932.05.13 – 1955.09.08) |
| 1955.09.09 | Metropolitan Archbishop of Caracas (Venezuela) (1946.05.13 – 1955.09.09) |
| 1955.09.09 | Vicar Apostolic of Caroline and Marshall Islands (Micronesia) (1951.05.10 – 1955.09.09) |
| 1955.09.14 | Metropolitan Archbishop of Saint-Boniface (Canada) (1915.11.09 – 1955.09.14) |
| 1955.09.25 | |
| 1955.10.03 | Bishop of Vallo di Lucania (Italy) (1947.01.11 – 1955.10.03) |
| 1955.10.06 | Bishop of Lydenburg (South Africa) (1951.01.11 – 1955.10.06) |
| 1955.10.09 | Cardinal-Priest of S. Crisogono (1933.03.16 – 1955.10.09) Metropolitan Archbishop of Wien (Austria) (1932.09.19 – 1955.10.09) |
| 1955.10.15 | Bishop of Ciudad Victoria–Tamaulipas (Mexico) (1923.08.03 – 1955.10.15) |
| 1955.10.17 | |
| 1955.10.25 | Archbishop-Bishop of Killaloe (Ireland) (1904.07.12 – 1955.10.25) |
| 1955.11.14 | Archbishop of Bar (Montenegro) (1912.01.16 – 1955.11.14) |
| 1955.11.22 | Bishop of Middlesbrough (England) (1929.04.11 – 1955.11.22) Archbishop ad personam (1955.01.19 – 1955.11.22) |
| 1955.11.23 | Bishop of Osnabrück (Germany) (1914.07.14 – 1955.11.23) Archbishop ad personam (1950 – 1955.11.23) |
| 1955.11.24 | |
| 1955.11.24 | |
| 1955.11.30 | Archbishop of Damascus of the Maronites (Syria) ([1928.04.26] 1928.06.09 – 1955.11.30) |
| 1955.12.03 | |
| 1955.12.09 | Metropolitan Archbishop of Udine (Italy) (1928.01.27 – 1955.12.09) |
| 1955.12.12 | Vicar Apostolic of Reyes (Bolivia) (1943.07.14 – 1955.12.12) |
| 1955.12.17 | Bishop emeritus of Tuticorin (India) (1923.06.12 – 1953.06.26) |
| 1955.12.27 | Coadjutor Bishop emeritus of Dunedin (New Zealand) (1943.01.18 – 1949) |
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