| Bishops (98) | Elected | Consecrated |
 Saint Bishop Luigi Versiglia (雷鳴道), S.D.B.former Vicar Apostolic of Shaozhou 韶州 (China) | 1920.04.22 | 1921.01.09 |
 Bishop Francisco Frutos Valienteformer Bishop of Salamanca (Spain) | 1920.09.21 | 1921.01.09 |
 Bishop Félix-Henri-François-Donatien Perroy, M.E.P.former Vicar Apostolic of Southern Burma (Myanmar) | 1920.05.11 | 1921.01.18 |
 Archbishop Gherardo Sante Menegazzi, O.F.M. Cap.former Bishop of Comacchio (Italy) | 1920.12.16 | 1921.01.23 |
| Archbishop Ersilio Menzani former Bishop of Piacenza (Italy) former Archbishop ad personam | 1920.12.08 | 1921.01.25 |
 Bishop Alfred Flocardformer Bishop of Limoges (France) | 1920.12.16 | 1921.01.25 |
 Archbishop Antonio Guízar y Valenciaformer Metropolitan Archbishop of Chihuahua (Mexico) | 1920.07.20 | 1921.01.30 |
 Archbishop Georges-Prudent-Marie Bruley des Varannesformer Bishop of Monaco (Monaco) | 1920.12.16 | 1921.01.30 |
 Archbishop Karol Kmetkoformer Bishop of Nitra (Slovakia) former Archbishop ad personam | 1920.11.13 | 1921.02.13 |
| Bishop Marián Blaha former Bishop of Banská Bystrica (Slovakia) | 1920.11.13 | 1921.02.13 |
| Bishop Ján Vojtassák former Bishop of Spiš (Slovakia) | 1920.11.13 | 1921.02.13 |
| Archbishop Pio Leonardo Navarra, O.F.M. Conv. former Bishop of Sezze (Italy) former Bishop of Priverno (Italy) former Bishop of Terracina (Italy) | 1920.12.16 | 1921.02.20 |
 Bishop Šimon Bártaformer Bishop of České Budějovice (Czechia) | 1920.12.16 | 1921.02.20 |
| Bishop Silviano Carrillo y Cardenas former Bishop of Sinaloa (Mexico) | 1920.07.30 | 1921.02.24 |
 Bishop Ludovico van Hoeck, S.J.former Bishop of Ranchi (India) | 1920.07.20 | 1921.03.06 |
 Archbishop Basilio Cattan (Greek-Melkite Rite)former Metropolitan Archbishop of Beirut–Gibail of the Greek-Melkites (Lebanon) | 1921.02.11 | 1921.03.13 |
 Bishop Francis Joseph Tiefformer Bishop of Concordia (USA) | 1920.12.16 | 1921.03.30 |
| Archbishop Antonín Cyril Stojan former Metropolitan Archbishop of Olomouc (Czechia) | 1921.03.10 | 1921.04.03 |
| Bishop Franciscus Hubertus Schraven (文致和), C.M. former Vicar Apostolic of Zhengdingfu 正定府 (China) | 1920.12.16 | 1921.04.10 |
 Bishop Ludwig Maria Hugoformer Bishop of Mainz (Germany) | 1921.03.07 | 1921.04.10 |
| Archbishop Pietro Benedetti former Titular Archbishop of Tyrus | 1921.03.10 | 1921.04.10 |
 Bishop Joseph-Jean-Baptiste Halléformer Bishop of Hearst (Canada) | 1920.11.17 | 1921.04.17 |
 Archbishop Giovanni Battista Federico Vallegaformer Metropolitan Archbishop of Izmir (Turkiye) former Auditor General of Reverend Apostolic Camera | 1921.01.24 | 1921.04.17 |
| Bishop Johannes Scheifes former Auxiliary Bishop of Münster (Germany) | 1921.03.07 | 1921.04.24 |
 Bishop Bonifatius Sauer (신상원 보니파시오), O.S.B.former Abbot Ordinary of Tŏkugen (North Korea) | 1920.08.25 | 1921.05.01 |
 Bishop Émile-Alexandre-Joseph Devred, M.E.P.former Coadjutor Vicar Apostolic of Seoul 서울 (South Korea) | 1920.12.16 | 1921.05.01 |
 Bishop Domingo Juan Vargas, O.P.former Bishop of Huaraz (Peru) | 1920.08.26 | 1921.05.05 |
| Cardinal Federico Tedeschini former Cardinal-Bishop of Frascati former Datary of His Holiness of Apostolic Dataria former Archpriest of Papal Basilica of Saint Peter | 1921.04.30 | 1921.05.05 |
 Bishop Egide de Boeck, C.I.C.M.former Vicar Apostolic of Lisala (Congo-Kinshasa) | 1921.01.04 | 1921.05.08 |
 Bishop Santos Ballesteros López, O.A.R.former Vicar Apostolic of Casanare (Colombia) | 1920.04.22 | 1921.05.15 |
| Bishop Charles-Albert-Joseph Lecomte former Bishop of Amiens (France) | 1921.03.10 | 1921.05.17 |
| Patriarch Roberto Vicentini former Patriarch of Antioch | 1921.05.19 | 1921.05.19 |
| Archbishop Giacomo Carabelli former Metropolitan Archbishop of Siracusa (Italy) | 1921.04.13 | 1921.05.22 |
| Bishop Fidel García Martínez former Bishop of Calahorra y La Calzada (Spain) | 1920.12.16 | 1921.05.26 |
| Bishop Auguste-Ernest-Désiré-Marie Gaspais (高德惠), M.E.P. former Bishop of Jilin 吉林 (China) | 1920.12.16 | 1921.05.29 |
| Archbishop Paul-Jules-Narcisse Rémond former Archbishop-Bishop of Nice (France) | 1921.04.09 | 1921.05.29 |
| Archbishop Franz Rudolf Bornewasser former Archbishop-Bishop of Trier (Germany) | 1921.04.23 | 1921.05.29 |
 Bishop Joaquim Rafael Maria d’Assunçâo Pitinho, O.F.M.former Bishop of Santiago de Cabo Verde (Cabo Verde) | 1920.12.16 | 1921.05.31 |
 Bishop José del Patrocinio Diasformer Bishop of Beja (Portugal) | 1920.12.16 | 1921.06.03 |
| Bishop Augustus John Schwertner former Bishop of Wichita (USA) | 1921.03.10 | 1921.06.08 |
| Bishop Emmanuel Boleslaus Ledvina former Bishop of Corpus Christi (USA) | 1921.04.30 | 1921.06.14 |
| Bishop Johannes Raffl former Bishop of Brixen (Italy) | 1921.04.28 | 1921.06.19 |
 Bishop Laurent Janssens (Henricus Antonius), O.S.B.former Rector Magnificus of Pontifical Athenaeum of Saint Anselm | 1921.06.13 | 1921.06.19 |
| Bishop Giovanni Pranzini former Bishop of Carpi (Italy) | 1921.06.13 | 1921.06.26 |
| Bishop Adalberto Schmücker (瑞明軒), O.F.M. former Vicar Apostolic of Jinanfu 濟南府 (China) | 1920.08.02 | 1921.06.29 |
| Bishop Leopoldo Lara y Torres former Bishop of Tacámbaro (Mexico) | 1920.12.23 | 1921.06.29 |
 Bishop Vincenzo Tymienieckiformer Bishop of Łódź (Poland) | 1921.04.11 | 1921.06.29 |
 Archbishop Thomas Shineformer Bishop of Middlesbrough (England) former Archbishop ad personam | 1921.04.12 | 1921.06.29 |
| Bishop Felice Cribellati former Bishop of Tropea (Italy) former Bishop of Nicotera (Italy) | 1921.06.09 | 1921.06.29 |
| Archbishop Cesare Boccoleri former Metropolitan Archbishop of Modena (Italy) former Abbot nullius of Nonantola (Italy) | 1921.06.13 | 1921.06.29 |
| Bishop Hugh Charles Boyle former Bishop of Pittsburgh (USA) | 1921.06.16 | 1921.06.29 |
| Bishop Francis Vazhapilly (Syro-Malabar Rite) former Bishop of Trichur of the Syro-Malabars (India) | 1921.04.05 | 1921.07.06 |
| Bishop Giovanni Piccioni former Bishop of Massa Marittima e Populonia (Italy) | 1921.06.13 | 1921.07.24 |
| Bishop Jaime Viladrich y Gaspar former Auxiliary Bishop of Burgos (Spain) | 1921.06.26 | 1921.07.25 |
 Archbishop Rafael Otón Castro Jiménezformer Metropolitan Archbishop of San José (Costa Rica) | 1921.03.10 | 1921.08.02 |
| Archbishop Ernesto Eugenio Filippi former Metropolitan Archbishop of Monreale (Italy) | 1921.07.22 | 1921.08.07 |
| Bishop Antonio Micozzi former Bishop of Teramo (Italy) | 1921.07.22 | 1921.08.07 |
 Bishop Emile-Fernand Sauvant, M. Afr.former Vicar Apostolic of Bamako (Mali) | 1921.07.08 | 1921.08.10 |
 Bishop Varfolomey Remov (Russian Rite)former Titular Bishop of Sergievo | (1933.07.03) | 1921.08.10 ▼ |
| Bishop Umberto Rossi former Bishop of Asti (Italy) | 1921.06.13 | 1921.08.14 |
| Archbishop Filippo Cortesi former Titular Archbishop of Siraces former Apostolic Nuncio to Poland | 1921.06.13 | 1921.08.21 |
| Cardinal Celso Benigno Luigi Costantini (剛恆毅) former Cardinal-Priest of S. Lorenzo in Damaso former Chancellor of Apostolic Chancery | 1921.07.22 | 1921.08.24 |
| Bishop Mateo Colom y Canals, O.E.S.A. former Bishop of Huesca (Spain) | 1921.07.29 | 1921.08.24 |
 Archbishop Luis Javier Muñoz y Capurón, S.J.former Metropolitan Archbishop of Guatemala (Guatemala) | 1921.07.30 | 1921.08.24 |
 Bishop Pierre-Marie-David Le Cadre, SS.CC.former Vicar Apostolic of Marquesas Islands (French Polynesia) | 1920.12.30 | 1921.09.04 |
| Bishop Alois Hartl former Auxiliary Bishop of München und Freising (Germany) | 1921.06.13 | 1921.09.04 |
| Bishop Thomas Mary O’Leary former Bishop of Springfield in Massachusetts (USA) | 1921.06.16 | 1921.09.08 |
| Bishop Edward Komar former Auxiliary Bishop of Tarnów (Poland) | 1921.06.16 | 1921.09.11 |
| Bishop Christian Schreiber former Bishop of Berlin (Germany) | 1921.08.12 | 1921.09.14 |
 Bishop Louis-Justin Gumy, O.F.M. Cap.former Bishop of Port Victoria (Seychelles) | 1921.03.10 | 1921.09.18 |
 Bishop Joaquim Ferreira de Meloformer Bishop of Pelotas (Brazil) | 1921.03.15 | 1921.09.18 |
| Bishop Michael Joseph Crane former Auxiliary Bishop of Philadelphia (USA) | 1921.08.20 | 1921.09.19 |
| Bishop Martino Chiolino (林棟臣), P.I.M.E. former Vicar Apostolic of Northern Honan 河南北境 (China) | 1921.02.23 | 1921.10.02 |
 Bishop Jules Girard, S.M.A.former Vicar Apostolic of Delta del Nilo (Egypt) | 1921.07.08 | 1921.10.23 |
| Bishop Joseph-Henri-Jean-Marie Prud’homme former Bishop of Prince Albert (Canada) | 1921.06.16 | 1921.10.28 |
| Cardinal Alfred-Henri-Marie Baudrillart, C.O. former Cardinal-Priest of S. Bernardo alle Terme | 1921.07.29 | 1921.10.28 |
 Archbishop George Joseph Caruanaformer Bishop of San Juan de Puerto Rico (Puerto Rico) | 1921.08.05 | 1921.10.28 |
| Bishop John Joseph Dunn former Auxiliary Bishop of New York (USA) | 1921.08.19 | 1921.10.28 |
| Bishop Giuseppe Petrone former Bishop of Pozzuoli (Italy) | 1921.09.23 | 1921.10.28 |
| Archbishop Pietro Pomares y de Morant former Metropolitan Archbishop of Bari e Canosa (Italy) | 1921.08.27 | 1921.11.01 |
| Bishop Pasquale Gioia, C.R.S. former Bishop of Terlizzi (Italy) former Bishop of Molfetta (Italy) former Bishop of Giovinazzo (Italy) | 1921.09.30 | 1921.11.01 |
| Bishop Settimio Quadraroli former Bishop of Teramo (Italy) | 1921.08.26 | 1921.11.06 |
| Bishop Silvino Ramírez y Cuera former Vicar Apostolic of California Inferiore (Mexico) | 1921.06.19 | 1921.11.13 |
| Cardinal José da Costa Nuñes (高若瑟) former Cardinal-Priest of S. Prisca former Metropolitan Archbishop of Goa and Daman (India) former Patriarch ad personam | 1920.12.16 | 1921.11.20 |
 Archbishop Francesco Melchiori, O.F.M.former Archbishop of Durrës (Albania) | 1921.09.28 | 1921.11.20 |
 Bishop Pierre Louis Perrichon, M.E.P.former Coadjutor Bishop of Malacca (Malaysia) | 1920.08.02 | 1921.11.27 |
| Patriarch Luca Ermenegildo Pasetto, O.F.M. Cap. former Patriarch of Alexandria former Secretary of Sacred Congregation of Religious | 1921.11.21 | 1921.11.27 |
| Bishop Bernardo Martínez y Noval, O.E.S.A. former Bishop of Almería (Spain) | 1921.07.18 | 1921.11.30 |
| Cardinal Samuel Alphonse Stritch former Cardinal-Priest of S. Agnese fuori le mura former Metropolitan Archbishop of Chicago (USA) former Pro-Prefect of Sacred Congregation of the Propagation of the Faith | 1921.08.10 | 1921.11.30 |
| Bishop Agostino de Jesus e Souza former Bishop of Porto (Portugal) | 1921.08.04 | 1921.12.08 |
| Archbishop Mario Giardini, B. former Archbishop of Ancona e Umana (Italy) | 1921.11.21 | 1921.12.08 |
| Archbishop Jules Tiberghien former Titular Archbishop of Nicæa | 1921.11.21 | 1921.12.08 |
| Bishop Bruno Occhiuto former Bishop of Cassano all’Jonio (Italy) | 1921.11.17 | 1921.12.11 |
| Bishop Dudley Charles Cary-Elwes former Bishop of Northampton (England) | 1921.11.21 | 1921.12.15 |
| Archbishop Ferdinand Périer, S.J. former Metropolitan Archbishop of Calcutta (India) | 1921.08.10 | 1921.12.21 |
| Archbishop Edward Francis Hoban former Bishop of Cleveland (USA) former Archbishop ad personam | 1921.11.21 | 1921.12.21 |
| Bishop Daniel Champavier former Bishop of Marseille (France) | 1921.11.21 | 1921.12.21 |
| Bishop Florencio Cerviño y González former Bishop of Ourense (Spain) | 1921.03.07 | 1921.12.27 |
