| Newly Elected Bishops (54) | Elected | Consecrated |
 Patriarch Antoun II Boutros Arida (Maronite Rite)former Patriarch of Antioch of the Maronites (Lebanon) | 1908 | 1908.06.18 |
 Archbishop Manoel Antônio de Oliveira Lopesformer Metropolitan Archbishop of Maceió (Brazil) | 1908.01.25 | 1908.09.06 |
 Bishop Eugène-Marie-Joseph Allys, M.E.P.former Vicar Apostolic of Huê (Vietnam) | 1908.01.30 | 1908.05.24 |
 Archbishop Frederick William Keatingformer Metropolitan Archbishop of Liverpool (England) | 1908.02.05 | 1908.02.25 |
 Bishop Ildefonso Vincenzo Pisani, C.R.L.former Bishop of Anglona–Tursi (Italy) | 1908.02.05 | 1908.03.01 |
| Archbishop Pietro Scebli (Maronite Rite) former Archbishop of Beirut of the Maronites (Lebanon) | 1908.02.11 | 1908.02.15 |
 Bishop Adolphe-Yves-Marie Duparcformer Bishop of Quimper (France) | 1908.02.11 | 1908.02.25 |
| Cardinal Hector-Irénée Sévin former Cardinal-Priest of SS. Trinità al Monte Pincio former Metropolitan Archbishop of Lyon (France) | 1908.02.11 | 1908.04.05 |
 Cardinal János Csernochformer Cardinal-Priest of S. Eusebio former Metropolitan Archbishop of Esztergom (Hungary) | 1908.02.16 | 1908.05.10 |
| Bishop Giovanni Vincenzo Tasso, C.M. former Bishop of Aosta (Italy) | 1908.02.17 | 1908.05.28 |
 Bishop Émile-Gabriel Grison, S.C.I.former Vicar Apostolic of Stanley Falls (Congo-Kinshasa) | 1908.03.10 | 1908.10.11 |
| Bishop Agostinho Francisco Benassi former Bishop of Niterói (Brazil) | 1908.03.20 | 1908.05.10 |
| Bishop Franz Egger former Bishop of Brixen (Italy) | 1908.03.20 | 1908.06.14 |
 Bishop Leonardo Castellanos y Castellanosformer Bishop of Tabasco (Mexico) | 1908.03.22 | 1908.09.27 |
 Bishop Joseph-Marie-Désiré Guiot, S.M.M.former Vicar Apostolic of Los Llanos de San Martín (Colombia) | 1908.03.24 | 1908.05.28 |
 Archbishop Vincent Sardi di Rivisondoliformer Vicar Apostolic of Constantinopole (Turkiye) former Assessor of Sacred Consistorial Congregation | 1908.04.06 | 1908.05.10 |
 Archbishop Paul-Eugène Royformer Metropolitan Archbishop of Québec (Canada) | 1908.04.08 | 1908.05.10 |
 Archbishop Ivan Šaricformer Metropolitan Archbishop of Vrhbosna (Bosnia and Herzegovina) | 1908.04.08 | 1908.05.28 |
 Bishop Auguste Prézeauformer Vicar Apostolic of Shiré (Malawi) | 1908.04.12 | 1908.10.04 |
 Archbishop Francisco María Cervera y Cervera, O.F.M.former Vicar Apostolic of Marruecos (Morocco) | 1908.04.14 | 1908.05.24 |
 Bishop Francesco Brusákformer Auxiliary Bishop of Praha (Czechia) | 1908.05.01 | 1908.05.17 |
| Archbishop João Batista Becker former Metropolitan Archbishop of Porto Alegre (Brazil) | 1908.05.03 | 1908.09.13 |
 Bishop Emmanuel Segrada, P.I.M.E.former Vicar Apostolic of Toungoo (Myanmar) | 1908.05.10 | 1909.01.24 |
| Archbishop Leone Kecegian (Armenian Rite) former Archbishop of Sebaste of the Armenians (Turkiye) | 1908.05.20 | 1908.06.21 |
 Bishop Paul Peter Rhodeformer Bishop of Green Bay (USA) | 1908.05.22 | 1908.07.29 |
 Archbishop Bernard Christen von Andermatt, O.F.M. Cap.former Minister General of Order of Friars Minor Capuchin (Capuchin Franciscans) | 1908.05.29 | 1908.06.14 |
 Bishop Miguel Claro Vásquezformer Auxiliary Bishop of Santiago (Chile) | 1908.06.01 | 1908.08.09 |
 Bishop John Tohillformer Bishop of Down and Connor (Northern Ireland) | 1908.06.09 | 1908.09.20 |
 Blessed Archbishop Antoni Julian Nowowiejskiformer Bishop of Płock (Poland) | 1908.06.12 | 1908.12.06 |
 Bishop James Jordan Carrollformer Bishop of Nueva Segovia (Philippines) | 1908.06.21 | 1909.02.14 |
| Bishop Vittore Corvaia, O.S.B. Subl. former Abbot Ordinary of Montevergine (Italy) | 1908.07.12 | 1908.10.11 |
 Archbishop Jan Feliks Cieplakformer Metropolitan Archbishop of Vilnius (Lithuania) | 1908.07.12 | 1908.12.20 |
 Bishop Manuel San Román y Elenaformer Auxiliary Bishop of Burgos (Spain) | 1908.07.12 | 1909.01.17 |
| Bishop Georg Schmid von Grüneck former Bishop of Chur (Switzerland) | 1908.07.13 | 1908.10.04 |
| Archbishop Albert Nègre former Metropolitan Archbishop of Tours (France) | 1908.07.14 | 1908.08.23 |
 Bishop Auguste-Jean-Gabriel Maurice (穆理思), O.F.M.former Vicar Apostolic of Central Shaanxi 陝西中境 (China) | 1908.07.28 | 1908.11.30 |
| Cardinal Enrico Sibilia former Cardinal-Bishop of Sabina e Poggio Mirteto | 1908.07.30 | 1908.10.11 |
| Bishop Hugh Singleton former Bishop of Shrewsbury (England) | 1908.08.01 | 1908.09.21 |
| Bishop Luigi Giacomo Baccini, O.F.M. Cap. former Bishop of Sant’Angelo in Vado (Italy) former Bishop of Urbania (Italy) | 1908.08.18 | 1908.10.04 |
| Bishop Albino Pella former Bishop of Casale Monferrato (Italy) | 1908.08.19 | 1908.10.11 |
| Bishop Laureano Vérez de Acevedo, S.J. former Titular Bishop of Nyssa | 1908.08.22 | 1908.10.16 |
| Archbishop Ettore Fronzi former Archbishop of Camerino (Italy) | 1908.09.12 | 1908.09.27 |
| Bishop Owen Patrick Bernard Corrigan former Auxiliary Bishop of Baltimore (USA) | 1908.09.29 | 1909.01.10 |
| Bishop Élie-Anicet Latulipe former Bishop of Haileybury (Canada) | 1908.10.01 | 1908.11.30 |
| Bishop Alexander MacDonald former Bishop of Victoria (Canada) | 1908.10.01 | 1909.01.03 |
| Bishop Lúcio Antunes de Souza former Bishop of Botucatu (Brazil) | 1908.10.17 | 1908.11.15 |
| Bishop Giuseppe Foschiani former Bishop of Feltre (Italy) former Bishop of Belluno (Italy) | 1908.10.24 | 1908.11.22 |
| Cardinal Tommaso Pio Boggiani, O.P. former Cardinal-Bishop of Porto e Santa Rufina former Cardinal-Priest of S. Lorenzo in Damaso in commendum former Chancellor of Apostolic Chancery | 1908.10.31 | 1908.11.22 |
| Bishop Augusto Klinke Leier former Auxiliary Bishop of San Carlos de Ancud (Chile) | 1908.11.11 | 1909.02.21 |
| Bishop Stefan Denisiewicz former Auxiliary Bishop of Płock (Poland) | 1908.11.30 | 1908.11.30 |
| Archbishop Nicola Giannattasio former Bishop of Nardò (Italy) | 1908.11.30 | 1908.12.31 |
| Bishop Alberto José Gonçalves former Bishop of Ribeirão Preto (Brazil) | 1908.12.05 | 1909.02.02 |
| Bishop Emanuele Mignone former Bishop of Arezzo (Italy) | 1908.12.27 | 1909.06.29 |
| Bishop Luigi Ermini former Bishop of Matelica (Italy) former Bishop of Fabriano (Italy) | 1908.12.30 | 1909.01.31 |
