| Bishops (105) | Elected | Consecrated |
 Archbishop Joseph Walshformer Metropolitan Archbishop of Tuam (Ireland) | 1937.12.16 | 1938.01.02 |
 Bishop Giuseppe Perniciaro (Italo-Albanese Rite)former Bishop of Piana degli Albanesi of the Italo-Albanese (Italy) | 1937.10.26 | 1938.01.16 |
 Bishop Marcel-Auguste-Marie Grandin, C.S.Sp.former Vicar Apostolic of Bangui (Central African Republic) | 1937.12.02 | 1938.01.18 |
 Bishop Stephen Stanislaus Woznickiformer Bishop of Saginaw (USA) | 1937.12.13 | 1938.01.25 |
| Archbishop Adelchi Albanesi former Bishop of Viterbo (Italy) former Abbot nullius of San Martino al Monte Cimino (Italy) former Bishop of Tuscania (Italy) former Archbishop ad personam | 1937.12.13 | 1938.01.30 |
| Archbishop Giacinto Giovanni Ambrosi, O.F.M. Cap. former Metropolitan Archbishop of Gorizia e Gradisca (Italy) | 1937.12.13 | 1938.02.02 |
 Bishop Giuseppe Felix Heredia Zurita, S.J.former Bishop of Guayaquil (Ecuador) | 1937.12.16 | 1938.02.06 |
 Cardinal Peter Tatsuo Doi (ペトロ 土井辰雄)former Cardinal-Priest of S. Antonio da Padova in Via Merulana former Metropolitan Archbishop of Tokyo 東京 (Japan) | 1937.12.02 | 1938.02.13 |
| Cardinal Efrem Forni former Cardinal-Priest of S. Croce in Gerusalemme | 1937.11.26 | 1938.02.20 |
 Archbishop Joseph Emmanuel Descuffi, C.M.former Metropolitan Archbishop of Izmir (Turkiye) | 1937.12.03 | 1938.02.20 |
| Bishop Giuseppe Ruotolo former Bishop of Ugento–Santa Maria di Leuca (Italy) | 1937.12.13 | 1938.02.20 |
 Bishop Franz Justus Rarkowskiformer Military Vicar of Germany (Germany) | 1938.01.07 | 1938.02.20 |
 Bishop John Baptist Wang Zeng-yi (王增義), C.M.former Bishop of Anguo 安國 (China) | 1937.07.01 | 1938.02.24 |
 Bishop Jean-Baptiste-Maximilien Chabalier, M.E.P.former Vicar Apostolic of Phnom Penh (Cambodia) | 1937.12.02 | 1938.02.24 |
 Archbishop Philippe-Servulo Desranleauformer Metropolitan Archbishop of Sherbrooke (Canada) | 1937.12.13 | 1938.02.24 |
 Bishop Étienne Bornetformer Auxiliary Bishop of Lyon (France) | 1937.12.16 | 1938.02.24 |
| Bishop Francis Ridgley Cotton former Bishop of Owensboro (USA) | 1937.12.16 | 1938.02.24 |
 Bishop Pavao Butoracformer Bishop of Dubrovnik (Croatia) | 1938.01.05 | 1938.03.06 |
 Bishop Riccardo Chavez Alcazarformer Bishop of Oruro (Bolivia) | 1938.01.27 | 1938.03.06 |
 Bishop Leone Proserpio, S.J.former Bishop of Calicut (India) | 1937.12.02 | 1938.03.13 |
 Bishop Frédéric Marie Blessing, O.S.C.former Vicar Apostolic of Bondo (Congo-Kinshasa) | 1937.12.02 | 1938.03.19 |
 Bishop Michele Acebedo y Floresformer Bishop of Calbayog (Philippines) | 1937.12.16 | 1938.03.25 |
| Bishop Bartholomew Joseph Eustace former Bishop of Camden (USA) | 1937.12.16 | 1938.03.25 |
| Bishop Manuel Mascariñas y Morgia former Bishop of Tagbilaran (Philippines) | 1937.12.16 | 1938.03.25 |
| Bishop Francis Xavier Zhao Zhen-sheng (趙振聲), S.J. former Bishop of Xianxian 獻縣 (China) | 1937.12.02 | 1938.03.27 |
 Bishop José Selva, S.D.B.former Bishop-Prelate of Registro do Araguaia (Brazil) | 1937.12.27 | 1938.04.24 |
| Cardinal Pietro Boetto, S.J. former Cardinal-Priest of S. Angelo in Pescheria pro hac vice Title former Metropolitan Archbishop of Genova (Italy) | 1938.03.17 | 1938.04.24 |
 Bishop Juan Paulo Odendahl Metz, C.M.former Vicar Apostolic of Limón (Costa Rica) | 1938.02.10 | 1938.04.25 |
| Archbishop Víctor Manuel Sanabria Martínez former Metropolitan Archbishop of San José (Costa Rica) | 1938.03.12 | 1938.04.25 |
| Bishop William Aloysius Griffin former Bishop of Trenton (USA) | 1938.02.26 | 1938.05.01 |
| Bishop Giuseppe Pronti former Bishop of Nocera Umbra–Gualdo Tadino (Italy) | 1938.03.17 | 1938.05.01 |
 Bishop John Reesinck, M.H.M.former Vicar Apostolic of Upper Nile (Uganda) | 1938.03.29 | 1938.05.01 |
| Bishop Alfonso Ferrandina former Auxiliary Bishop of Napoli (Italy) | 1938.04.13 | 1938.05.01 |
 Archbishop Pierre-Martin Ngô Ðình Thục ▼former Metropolitan Archbishop of Huê (Vietnam) | 1938.01.08 | 1938.05.04 |
| Bishop Louis Liagre former Bishop of La Rochelle (France) | 1938.03.07 | 1938.05.04 |
| Bishop Nicanor Roberto Aguirre Baus former Bishop of Loja (Ecuador) | 1937.12.16 | 1938.05.08 |
 Archbishop Carmelo Ballester y Nieto, C.M.former Metropolitan Archbishop of Santiago de Compostela (Spain) | 1938.02.12 | 1938.05.15 |
 Bishop Michal Buzalkaformer Auxiliary Bishop of Trnava (Slovakia) | 1938.03.17 | 1938.05.15 |
| Bishop William Francis Murphy former Bishop of Saginaw (USA) | 1938.02.26 | 1938.05.17 |
| Archbishop Mariano Aspiras Madriaga former Metropolitan Archbishop of Lingayen–Dagupan (Philippines) | 1938.03.17 | 1938.05.24 |
| Bishop Pietro Massa (梅先春), P.I.M.E. former Bishop of Nanyang 南陽 (China) | 1938.03.29 | 1938.05.26 |
| Bishop Reginald Duprat, O.P. former Bishop of Prince Albert (Canada) | 1938.03.17 | 1938.05.31 |
 Bishop Francis-Xavier Gsell, M.S.C.former Bishop of Darwin (Australia) | 1938.03.29 | 1938.06.05 |
 Archbishop Florido Ambrogio Acciari, O.F.M.former Archbishop of Rhodes (Greece) | 1938.03.30 | 1938.06.05 |
 Bishop Ilarino Felder, O.F.M. Cap.former Titular Bishop of Geras | 1938.04.12 | 1938.06.13 |
| Bishop Ubald Langlois, O.M.I. former Vicar Apostolic of Grouard (Canada) | 1938.03.30 | 1938.06.20 |
 Bishop Octave-Marie Terrienne, M.S.C.former Vicar Apostolic of Gilbert Islands (Kiribati) | 1937.12.02 | 1938.06.25 |
 Bishop Antonijs Urbšsformer Bishop of Liepāja (Latvia) | 1938.04.29 | 1938.06.29 |
 Bishop Tihamér Tóthformer Bishop of Veszprém (Hungary) | 1938.05.30 | 1938.06.29 |
 Cardinal Bernard William Griffinformer Cardinal-Priest of Ss. Andrea e Gregorio al Monte Celio former Metropolitan Archbishop of Westminster (England) | 1938.05.26 | 1938.06.30 |
 Bishop Alberto Martín y Villaverdeformer Bishop of Matanzas (Cuba) | 1938.05.14 | 1938.07.03 |
| Archbishop John Henry King former Bishop of Portsmouth (England) former Archbishop ad personam | 1938.05.28 | 1938.07.15 |
 Bishop Roberto Benardino Berríos Gaínza, O.F.M.former Bishop of San Felipe (Chile) | 1938.03.19 | 1938.07.17 |
| Bishop Napoléon-Alexandre Labrie, C.I.M. former Bishop of Golfe Saint-Laurent (Canada) | 1938.03.30 | 1938.07.17 |
| Bishop José André Coimbra former Bishop of Patos de Minas (Brazil) | 1938.02.26 | 1938.07.24 |
| Bishop James Mendonça former Bishop of Tiruchirapalli (India) | 1938.03.07 | 1938.07.25 |
| Bishop Albini Lafortune former Bishop of Nicolet (Canada) | 1938.05.17 | 1938.07.25 |
| Bishop Alphonse Marie van den Bosch, C.SS.R. former Bishop of Matadi (Congo-Kinshasa) | 1938.06.14 | 1938.08.01 |
| Bishop Manuel Larraín Errázuriz former Bishop of Talca (Chile) | 1938.05.07 | 1938.08.07 |
| Bishop Giorgio Rossi, C.S.I. former Vicar Apostolic of Napo (Ecuador) | 1938.05.23 | 1938.08.08 |
 Bishop Heinrich Horst, M. Afr.former Vicar Apostolic of Lwangwa (Zambia) | 1938.05.21 | 1938.08.14 |
| Archbishop Pedro Paulo Santos Songco former Metropolitan Archbishop of Caceres (Philippines) | 1938.05.21 | 1938.08.15 |
 Archbishop Jean-Marie Masson, O.M.I.former Metropolitan Archbishop of Colombo in Ceylon (Sri Lanka) | 1938.06.13 | 1938.08.24 |
 Bishop Carlo Maria Splettformer Bishop of Gdańsk (Poland) | 1938.06.13 | 1938.08.24 |
| Bishop Louis-Prosper Durand (杜安坤), O.F.M. former Bishop of Yantai 煙臺 (China) | 1938.06.14 | 1938.08.28 |
| Bishop Czeslaw Kaczmarek former Bishop of Kielce (Poland) | 1938.05.24 | 1938.09.04 |
| Bishop Ireneo Chelucci former Bishop of Montalcino (Italy) | 1938.07.22 | 1938.09.18 |
| Archbishop Aldo Laghi former Titular Archbishop of Nicæa former Apostolic Nuncio to Chile | 1938.08.28 | 1938.09.18 |
| Bishop Eduardo Larraín Cordovez former Bishop of Rancagua (Chile) | 1938.07.09 | 1938.09.21 |
| Bishop Firmin Lamy former Bishop of Langres (France) | 1938.07.27 | 1938.09.21 |
| Archbishop Ugo Camozzo former Metropolitan Archbishop of Pisa (Italy) | 1938.08.17 | 1938.09.21 |
| Bishop Tadeusz Pawel Zakrzewski former Bishop of Płock (Poland) | 1938.08.08 | 1938.09.22 |
 Archbishop Leone Giovanni Battista Nigrisformer Apostolic Administrator of Southern Albania (Albania) | 1938.08.18 | 1938.09.25 |
| Bishop Bartolomé Pascual Marroig former Bishop of Menorca (Spain) | 1936.05.08 | 1938.10.02 |
| Bishop Vincenzo Lojali former Bishop of Amelia (Italy) | 1938.08.17 | 1938.10.02 |
| Blessed Bishop Władysław Goral former Auxiliary Bishop of Lublin (Poland) | 1938.08.10 | 1938.10.09 |
| Cardinal Joseph-Charles Lefèbvre former Cardinal-Priest of S. Giovanni Battista dei Fiorentini former Metropolitan Archbishop of Bourges (France) | 1938.07.27 | 1938.10.11 |
| Bishop Charles Weber (萬賓來), S.V.D. former Bishop of Yizhou 沂州 (China) | 1937.12.02 | 1938.10.16 |
 Bishop Giorgio Baraka (Coptic Rite)former Bishop of Minya of the Copts (Egypt) | 1938.07.08 | 1938.10.16 |
| Bishop Josephus Meile former Bishop of Sankt Gallen (Switzerland) | 1938.09.26 | 1938.10.16 |
| Archbishop Louis Morel (穆清海), C.I.C.M. former Metropolitan Archbishop of Suiyuan 綏遠 (China) | 1938.03.21 | 1938.10.18 |
| Bishop Hugo Edward Ryan former Bishop of Townsville (Australia) | 1938.07.13 | 1938.10.18 |
| Bishop Matthew Francis Brady former Bishop of Manchester (USA) | 1938.07.30 | 1938.10.26 |
| Bishop Joseph Basil Roper former Bishop of Toowoomba (Australia) | 1938.07.13 | 1938.10.28 |
| Bishop Francis Augustine Thill former Bishop of Salina (USA) | 1938.08.24 | 1938.10.28 |
| Archbishop Mário de Miranda Villas-Boas former Metropolitan Archbishop of Paraíba (Brazil) | 1938.05.26 | 1938.10.30 |
| Bishop João Batista Cavati, C.M. former Bishop of Caratinga (Brazil) | 1938.07.30 | 1938.10.30 |
| Bishop Gennaro Fenizia former Bishop of Sarno (Italy) former Bishop of Cava (Italy) | 1938.08.17 | 1938.10.30 |
| Bishop Paolo Babini former Bishop of Forlì (Italy) | 1938.09.12 | 1938.11.05 |
| Bishop Charles Massé former Auxiliary Bishop of Luçon (France) | 1938.07.27 | 1938.11.09 |
| Bishop John Hubert Peschges former Bishop of Crookston (USA) | 1938.08.30 | 1938.11.09 |
| Bishop Jean-Baptiste-Adrien Llosa former Bishop of Ajaccio (France) | 1938.09.14 | 1938.11.09 |
| Bishop Henri Joseph Marius Piérard, A.A. former Bishop of Beni (Congo-Kinshasa) | 1938.02.09 | 1938.11.21 |
 Archbishop Athanasios Toutoungi, B.A. (Greek-Melkite Rite)former Metropolitan Archbishop of Aleppo of the Greek-Melkites (Syria) | 1938.10.01 | 1938.11.27 |
| Bishop Léon-Albert Terrier former Bishop of Bayonne (France) | 1938.09.14 | 1938.11.30 |
| Bishop René de Pontes former Bishop of Valença (Brazil) | 1938.10.13 | 1938.11.30 |
 Bishop Paulus Ruschformer Bishop of Innsbruck (Austria) | 1938.10.15 | 1938.11.30 |
| Archbishop Henri Audrain former Metropolitan Archbishop of Auch (France) | 1938.10.22 | 1938.12.06 |
 Archbishop Luis Chávez y Gonzálezformer Metropolitan Archbishop of San Salvador (El Salvador) | 1938.09.01 | 1938.12.12 |
 Bishop Constantino Gómez Villa, O.F.M. Cap.former Vicar Apostolic of Caroní (Venezuela) | 1938.07.14 | 1938.12.18 |
| Bishop Louis-Paul Rastouil former Bishop of Limoges (France) | 1938.10.21 | 1938.12.21 |
| Archbishop Umberto Malchiodi former Archbishop-Bishop of Piacenza (Italy) | 1938.11.14 | 1938.12.21 |
| Bishop Umberto Ravetta former Bishop of Senigallia (Italy) | 1938.11.14 | 1938.12.21 |
| Cardinal William Godfrey former Cardinal-Priest of Ss. Nereo ed Achilleo former Metropolitan Archbishop of Westminster (England) | 1938.11.21 | 1938.12.21 |
| Archbishop David Mathew former Military Vicar of Great Britain (England) | 1938.12.03 | 1938.12.21 |
