| Acronym | Monastic Orders of Pontifical Right | Members | Superior General |
| O.S.B. | American-Cassinese Benedictine Congregation | 580 |   Abbot Jonathan R. Licari, O.S.B. (77) |
| O.A.O.C. | Antonian Order of Saint Ormizda of the Chaldeans | 12 |  Fr. Samer Soreshow Yohanna, O.A.O.C. |
| O.A.M. | Antonin Maronite Order | 160 |  Abbot Joseph Bou Raad, O.A.M. |
| B.A. | Basilian Alepian Order | 31 | Archimandrite Elias Khoudary, B.A. (69) |
| B.C. | Basilian Chouerite Order of Saint John the Baptist | 45 | Archimandrite Bernard Touma, B.C. (51) |
| O.S.B.M. | Basilian Order of Saint Josaphat | 486 |   Fr. Robert Roman Lisseiko, O.S.B.M. (49) |
| B.S. | Basilian Order of the Most Holy Saviour (Salvatorian Fathers) | 97 | Archimandrite Antoine Dib, B.S. (72) |
| O.S.B. | Benedictine Confederation of the Order of Saint Benedict (Benedictines) | 6,124 |  Abbot Primate Jeremias Schröder, O.S.B. (61) |
| O.S.B. | Benedictine Congregation of Austria of the Immaculate Conception | 235 |  Abbot Johannes Perkmann, O.S.B. (58) |
| O.S.B. | Benedictine Congregation of Bavaria | 144 | Abbot Markus Eller, O.S.B. (60) |
| O.S.B. | Benedictine Congregation of Brazil | 204 |  Abbot Emanuel d’Able do Amaral, O.S.B. (68) |
| O.S.B. | Benedictine Congregation of Hungary | 84 |  Archabbot Cirill Tamás Hortobágyi, O.S.B. (67) |
| O.S.B. Oliv. | Benedictine Congregation of Our Lady of Mount Olivet (Olivetans) | 181 |  Abbot Diego Gualtiero Maria Rosa, O.S.B. Oliv. (73) |
| O.S.B. | Benedictine Congregation of Saint Ottilien (Missionary Benedictines) | 1,045 |  Abbot Javier Aparicio Suárez, O.S.B. (56) |
| O.S.B. | Benedictine Congregation of Switzerland | 134 |  Abbot Vigeli Monn, O.S.B. (61) |
| O.S.B. | Benedictine Congregation of the Annunciation | 505 |  Abbot Robert Nawara Maksymilian, O.S.B. (47) |
| C.A.M. | Benedictine Congregation of the Mechitarists (Mechitarists) | 23 | |
| O.S.B. | Beuronese Benedictine Congregation | 140 | Abbot Franziskus Berzdorf, O.S.B. (73) |
| O.S.B. Cam. | Camaldolese Congregation of the Order of Saint Benedict (Camaldolese) | 98 | Fr. Matteo Ferrari, O.S.B. Cam. (51) |
| E.C.M.C. | Camaldolese Hermits of Mount Corona | 53 |  Fr. Emir José Castillo Zárate, E.C.M.C. (65) |
| O. Cart. | Carthusian Order (Carthusians) | 272 |  Fr. Dysmas de Lassus, O. Cart. (69) |
| O.S.B. | Cono-Sur Benedictine Congregation of the Holy Cross | 79 | Abbot Benito Rodriguez, O.S.B. |
| E.B.C. | English Benedictine Congregation | 186 |  Abbot Christopher Jamison, E.B.C. (74) |
| O.S.B.I. | Italian Basilian Order of Grottaferrata | 8 | Abbot Francesco De Feo, O.S.B. (51) |
| O.L.M. | Lebanese Maronite Order (Baladites) | 340 | Fr. Hady Mahfouz, O.L.M. |
| O.M.M. | Mariamite Maronite Order (Aleppians) | 105 | Abbot Edmond Rizk, O.M.M. (50) |
| O. Cist. | Order of Cistercians (Cistercians) | 1,529 | Abbot Mauro Giorgio Giuseppe Lepori, O. Cist. (67) |
| O.C.S.O. | Order of Cistercians of the Strict Observance (Trappists) | 1,406 |  Abbot Bernardus Peeters, O.C.S.O. (57) |
| O.S.H. | Order of Saint Jerome (Hieronymites) | 5 | |
| O.S.P.P.E. | Order of Saint Paul the First Hermit (Pauline Fathers) | 462 | Fr. Arnold O. Chrapkowski, O.S.P.P.E. (58) |
| O.S.B. | Slavonic Benedictine Congregation of Saint Adalbert and Saint Margaret | 23 |  Abbot Jeronim Adam Marin, O.S.B. (51) |
| O.S.B. | Solesmes Congregation | 531 | Abbot Geoffroy Kemlin, O.S.B. (47) |
| O.S.B. | Subiaco Cassinese Benedictine Congregation | 1,252 | Abbot Ignasi Maria Fossas i Colet, O.S.B. (66) |
| O.S.B. | Swiss-American Benedictine Congregation | 420 | Abbot Justin Brown, O.S.B. |
| O.S.B. Silv. | Sylvestrine Congregation of the Benedictine Order (Sylvestrines) | 209 |  Abbot Shamindra Jayawardena, O.S.B. Silv. (54) |
| O.S.B. Vall. | Vallumbrosan Congregation of the Benedictine Order (Vallombrosians) | 74 | Abbot Giuseppe Casetta, O.S.B. Vall. (68) |
| Acronym | Monastic Orders of Diocesan Right | Members | Superior General |
| M.S.U. | Ukrainian Studite Monks | 11 | Fr. Yosafat Voytek, M.S.U. (56) |
