  Bishop Daniel Joseph Meagher (63) Titular Bishop of PocofeltusAuxiliary Bishop of Sydney (Australia)God, only GodBorn:1961.11.10 (Sydney, New South Wales, Australia)Ordained Priest:1995.07.22Consecrated Bishop:2021.12.08Priest of Sydney (Australia) (1995.07.22 – 2021.11.18)Titular Bishop of Pocofeltus (2021.11.18 – ...)Auxiliary Bishop of Sydney (Australia) (2021.11.18 – ...) |
 Archbishop Pierre Kamel Medawar, M.S.P. (Greek-Melkite Rite) |
 Archbishop Leonida Medina |
 Bishop Mario Medina Balam (61) Titular Bishop of PupianaAuxiliary Bishop of Yucatán (Mexico)Officium boni pastoris est charitasBorn:1963.01.19 (Abalá, YUC, Mexico)Ordained Priest:1987.06.17Consecrated Bishop:2023.04.14Priest of Yucatán (Mexico) (1987.06.17 – 2023.02.11)Titular Bishop of Pupiana (2023.02.11 – ...)Auxiliary Bishop of Yucatán (Mexico) (2023.02.11 – ...) |
| Bishop Ignatius Franciscus Ladislaus Mednyánszky Born:1678.08.02Consecrated Bishop:1731.12.02Died:1733.12.06 († 55)Titular Bishop of Leuca (1731.09.03 – 1733.12.06) |
 Bishop Wasyl Ihor Medwit, O.S.B.M. (Ukrainian Rite) |
 Archbishop Joseph Mees Born:1923.04.18 (Belgium)Ordained Priest:1948.04.04Consecrated Bishop:1969.06.30Died:2001.12.09 († 78)Apostolic Pro-Nuncio to Indonesia (1969.06.14 – 1973.07.10)Titular Archbishop of Ieper (1969.06.14 – 2001.12.09)Apostolic Nuncio to Paraguay (1973.07.10 – 1985.01.19)Apostolic Pro-Nuncio to Lesotho (1985.01.19 – 1987.10)Apostolic Delegate to Southern Africa (1985.01.19 – 1987.10) |
 Bishop Francisco Mejía de Molina, O.P. Auxiliary Bishop of Sassari (Italy) (1533.09.03 – 1534)Titular Bishop of Fez (1533.09.03 – 1573.10.16)Auxiliary Bishop of Valencia (Spain) (1534 – 1567)Auxiliary Bishop of Sigüenza (Spain) (1567 – 1573.10.16) |
| Bishop Edgar Jesús Mejía Orozco (48) Titular Bishop of ZattaraAuxiliary Bishop of Barranquilla (Colombia)Totus tuus Domine Jesu |
 Bishop Franz Arnold Melchers Born:1765.10?Ordained Priest:1789.04.08Consecrated Bishop:1837.05.06Died:1851.02.18 († 85)Titular Bishop of Hebron (1836.11.21 – 1851.02.18)Auxiliary Bishop of Münster (Germany) (1836.11.21 – 1851.02.18) |
 Archbishop Egisto Domenico Melchiori Born:1879.02.15 (Italy)Ordained Priest:1901.08.25Consecrated Bishop:1924.06.15Died:1963.03.02 († 84)Bishop of Nola (Italy) (1924.05.02 – 1934.12.05)Bishop of Tortona (Italy) (1934.12.05 – 1963.03.02)Archbishop ad personam (1949.02.26 – 1963.03.02) |
| Bishop Giovanni Antonio Melegnano |
 Bishop Paolo Meletijew Born:1880.11.02 (Russia)Ordained Priest:1908.09.24Consecrated Bishop:1943.07.12Died:1962.05.19 († 81)Titular Bishop of Heracleopolis magna (1946.10.26 – 1962.05.19) |
 Archbishop Alfred-Jules Mélisson Born:1842.09.21 (France)Ordained Priest:1865.04.15Consecrated Bishop:1907.11.30Died:1927.06.06 († 84)Bishop of Blois (France) (1907.10.10 – 1925.02.09)Titular Bishop of Irenopolis (1925.02.09 – 1925.07.11)Titular Archbishop of Viminacium (1925.07.11 – 1927.06.06) |
  Archbishop Flavien Joseph Melki (93) (Syriac Rite) Titular Archbishop of Dara Syrorum of the SyriacsAuxiliary Bishop emeritus of Antioch of the Syriacs (Lebanon)Born:1931.10.10 (Hassaké, Lebanon)Ordained Priest:1954.10.17Consecrated Bishop:1995.12.30Titular Bishop of Arethusa of the Syriacs (1995.06.24 – 1996.05.25)Auxiliary Bishop of Antioch of the Syriacs (Lebanon) (1995.06.24 – 1997)Titular Archbishop of Dara Syrorum of the Syriacs (1996.05.25 – ...)Bishop of Curia of the Syriacs (1997 – 2011.03.01) |
| Archbishop Flavien Zacharie Melki (Syriac Rite) Born:1899.08.15Ordained Priest:1925.05.03Consecrated Bishop:1963.08.15Died:1989.11.30 († 90)Patriarchal Vicar of Lebanon of the Syriacs (Lebanon) (1963.07.06 – 1983)Titular Archbishop of Amida of the Syriacs (1963.07.06 – 1989.11.30) |
  Bishop Grégoire Pierre Melki (84) (Syriac Rite) Titular Bishop of Batnæ of the SyriacsPatriarchal Exarch emeritus of Jerusalem (Palestine and Jordan) of the Syriacs (Palestine) |
| Bishop Dionisio Francisco Mellado Eguíluz Born:1672.12.10 (Spain)Consecrated Bishop:1716.11.30Titular Bishop of Lares (1716.03.30 – ?)Auxiliary Bishop of Toledo (Spain) (1716.03.30 – ?) |
| Bishop Marco Mellino (58) Titular Bishop of CresimaSecretary of Interdicastery Commission for the Revision of the General Regulations of the Roman CuriaSecretary of Council of CardinalsMihi vivere Christus |
| Bishop Manfred Melzer Deum diligendo cognoscereBorn:1944.02.28 (Germany)Ordained Priest:1972.02.01Consecrated Bishop:1995.09.10Died:2018.08.09 († 74)Auxiliary Bishop of Köln (Germany) (1995.06.09 – 2015.06.05)Titular Bishop of Carinola (1995.06.09 – 2018.08.09) |
| Archbishop Luis Mena Arroyo Born:1920.04.27 (Mexico)Ordained Priest:1944.04.08Consecrated Bishop:1961.09.21Died:2009.03.03 († 88)Titular Bishop of Danaba (1961.07.13 – 1964.09.01)Auxiliary Bishop of México (Mexico) (1961.07.13 – 1964.09.01)Coadjutor Archbishop of Chihuahua (Mexico) (1964.09.01 – 1969.08.24)Titular Archbishop of Sinitis (1964.09.01 – 2009.03.03)Auxiliary Bishop of México (Mexico) (1979.07.27 – 1995.09.09) |
| Bishop Pedro Sergio de Jesús Mena Díaz (69) Titular Bishop of ZuglioAuxiliary Bishop of Yucatán (Mexico)Born:1955.05.04 (Colonia Yucatán, Mexico)Ordained Priest:1986.10.07Consecrated Bishop:2017.07.18Priest of Yucatán (Mexico) (1986.10.07 – 2017.05.27)Titular Bishop of Zuglio (2017.05.27 – ...)Auxiliary Bishop of Yucatán (Mexico) (2017.05.27 – ...) |
 Bishop John Mendes |
 Bishop Sebastiao Mendes Fonseca |
| Bishop Luis Méndez, O.S.B. Titular Bishop of Sidon (1513.09.01 – 1529) |
| Bishop Giuseppe Menditto Born:1757.11.26Ordained Priest:1782.09.21Consecrated Bishop:1828.09.14Titular Bishop of Callipolis (1828.06.23 – ?)Auxiliary Bishop of Capua (Italy) (1828.06.23 – ?) |
| Bishop José Luis Mendoza Corzo (64) Titular Bishop of LamiggigaAuxiliary Bishop of Tuxtla Gutiérrez (Mexico)Pro eis ego sanctifico me ipsum |
  Bishop Gustavo Rodolfo Mendoza Hernández (90) Titular Bishop of SelemselæAuxiliary Bishop emeritus of Santiago de Guatemala (Guatemala) |
| Archbishop Gherardo Sante Menegazzi, O.F.M. Cap. Born:1866.10.14 (Italy)Ordained Priest:1897Consecrated Bishop:1921.01.23Died:1945.01.21 († 78)Bishop of Comacchio (Italy) (1920.12.16 – 1938.07.01)Titular Bishop of Dorylaëum (1938.07.01 – 1938.10.20)Titular Archbishop of Pompeiopolis in Paphlagonia (1938.10.20 – 1945.01.21) |
 Bishop Antonio Menegazzo, M.C.C.J. Born:1931.09.13 (Cittadella, Italy)Ordained Priest:1956.06.15Consecrated Bishop:1996.03.03Died:2019.03.20 (Cittadella, Italy † 87)Apostolic Administrator sede plena of El Obeid (Sudan) (1995.12.15 – 2010.08.15)Titular Bishop of Mesarfelta (1995.12.15 – 2019.03.20) |
| Bishop Gonzalo Menendi, O.P. |
 Bishop Timothy Francis Menezes (54) Titular Bishop of ThuggaAuxiliary Bishop of Birmingham (England)Born:1970.07.18 (Birmingham, England)Ordained Priest:1995.07.22Consecrated Bishop:2024.07.16Priest of Birmingham (England) (1995.07.22 – 2024.04.25)Prelate of Honour of His Holiness (2011.12.19 – 2024.04.25)Titular Bishop of Thugga (2024.04.25 – ...)Auxiliary Bishop of Birmingham (England) (2024.04.25 – ...) |
 Bishop Winnibald Joseph Menezes Born:1916.09.25 (India)Ordained Priest:1942.12.20Consecrated Bishop:1968.02.03Died:2002.05.27 († 85)Auxiliary Bishop of Bombay (India) (1967.11.29 – 1976.07.10)Titular Bishop of Thubursicum-Bure (1967.11.29 – 2002.05.27) |
 Archbishop Roberto Menini, O.F.M. Cap. Born:1837.10.18 (Italy)Ordained Priest:1863.07.05Consecrated Bishop:1880.02.02Died:1916.10.14 († 78)Coadjutor Vicar Apostolic of Sofia–Plovdiv (Bulgaria) (1880.01.30 – 1885.05.05)Titular Bishop of Metellopolis (1880.01.30 – 1885.05.19)Vicar Apostolic of Sofia–Plovdiv (Bulgaria) (1885.05.05 – 1916.10.14)Titular Archbishop of Gangra (1885.05.19 – 1916.10.14) |
| Bishop Stephan Meniok, C.SS.R. (75) (Ukrainian Rite) Titular Bishop of AcarassusArchiepiscopal Exarch emeritus of Donets’k of the Ukrainians (Ukraine)Да вси едино будутъ |
 Bishop Evelio Menjivar-Ayala (54) Titular Bishop of AëtusAuxiliary Bishop of Washington (USA)Ibat cum illisBorn:1970.08.14 (Chalatenango, El Salvador)Ordained Priest:2004.05.29Consecrated Bishop:2023.02.21Priest of Washington (USA) (2004.05.29 – 2022.12.19)Titular Bishop of Aëtus (2022.12.19 – ...)Auxiliary Bishop of Washington (USA) (2022.12.19 – ...) |
| Archbishop Domenico Menna Born:1875.11.15 (Italy)Ordained Priest:1898.08.14Consecrated Bishop:1929.01.06Died:1957.10.08 († 81)Bishop of Mantova (Italy) (1928.11.16 – 1954.09.08)Titular Archbishop of Novæ Patræ (1954.09.08 – 1957.10.08) |
| Bishop Carlo Mennella Born:1834.06.29 (Italy)Ordained Priest:1857.09.19Consecrated Bishop:1882.01.22Died:1883.07.30 († 49)Titular Bishop of Mennith (1881.11.18 – 1883.07.30)Auxiliary Bishop of Ischia (Italy) (1881.11.18 – 1883.07.30) |
 Archbishop Antonio Mennini (77) Titular Archbishop of FerentoChristus domus nosBorn:1947.09.02 (Roma, Italy)Ordained Priest:1974.12.14Consecrated Bishop:2000.09.12Priest of Roma (Italy) (1974.12.14 – 2000.07.08)Chaplain of His Holiness (1982.10.09 – 1996.02.02)Prelate of Honour of His Holiness (1996.02.02 – 2000.07.08)Apostolic Nuncio to Bulgaria (2000.07.08 – 2002.11.06)Titular Archbishop of Ferento (2000.07.08 – ...)Apostolic Nuncio to Russian Federation (2002.11.06 – 2010.12.18)Apostolic Nuncio to Uzbekistan (2008.07.26 – 2010.12.18)Apostolic Nuncio to Great Britain (2010.12.18 – 2017.02) |
| Bishop Giuseppe Bartolomeo Menocchio, O.E.S.A. |
| Archbishop Ersilio Menzani Born:1872.12.28 (Italy)Ordained Priest:1895.06.29Consecrated Bishop:1921.01.25Died:1961.06.30 († 88)Bishop of Piacenza (Italy) (1920.12.08 – 1961.06.30)Archbishop ad personam (1945.11.17 – 1961.06.30) |
| Bishop Salvatore Meo Born:1855.08.27 (Italy)Consecrated Bishop:1926.04.18Died:1936.11.15 († 81)Titular Bishop of Methone (1926.02.19 – 1936.11.15) |
| Bishop Johannes Meppen, O.E.S.A. Consecrated Bishop:1477.02.09Died:1496.11.15Auxiliary Bishop of Osnabrück (Germany) (1477.01.24 – 1495)Titular Bishop of Larissa (1477.01.24 – 1496.11.15)Auxiliary Bishop of Münster (Germany) (1495 – 1496.11.15) |
| Bishop Silvestro Merani, O.E.S.A. |
| Bishop Angelo Maria Meraviglia Mantegazza Born:1837.04.01 (Italy)Ordained Priest:1860.06.02Consecrated Bishop:1894.05.24Died:1902.09.26 († 65)Titular Bishop of Samos (1894.05.21 – 1897.04.24)Auxiliary Bishop of Milano (Italy) (1894.05.21 – 1902.09.26)Titular Bishop of Famagosta (1897.04.24 – 1902.09.26) |
| Bishop José Refugio Mercado Díaz Born:1942.07.28 (Mexico)Ordained Priest:1972.04.02Consecrated Bishop:2003.11.15Died:2014.10.15 († 72)Priest of Guadalajara (Mexico) (1972.04.02 – 2003.09.16)Auxiliary Bishop of Tehuantepec (Mexico) (2003.09.16 – 2009.06.10)Titular Bishop of Turuzi (2003.09.16 – 2014.10.15) |
| Bishop Alfonso Merchante de Valeria Born:1513 (Spain)Died:1581 († 68)Titular Bishop of Sidon (1563.10.15 – 1581)Auxiliary Bishop of Burgos (Spain) (1563.10.15 – 1581) |
| Archbishop Antonius Merciai, O.P. Born:1811.03Consecrated Bishop:1849.01.28Died:1850.10.22 († 39)Titular Archbishop of Theodosiopolis (1848.12.11 – 1850.10.22) |
| Archbishop Joël Mercier (79) Titular Archbishop of RotaSecretary emeritus of Congregation for ClergyBorn:1945.01.05 (Chaudefonds-sur-Layon, France)Ordained Priest:1970.06.27Consecrated Bishop:2015.03.19Priest of Angers (France) (1970.06.27 – 2015.01.08)Chaplain of His Holiness (2005.10.31 – 2015.01.08)Secretary of Congregation for Clergy (2015.01.08 – 2021.10.01)Titular Archbishop of Rota (2015.01.08 – ...) |
| Archbishop Charles Joseph Mercy-d’Argenteau Born:1787.03.17? (Belgium)Ordained Priest:1825.08.10Consecrated Bishop:1826.10.08Died:1879.11.16 († 92)Titular Archbishop of Tyrus (1826.10.02 – 1879.11.16)Apostolic Nuncio to Bavaria (1826.10.03 – 1838) |
| Bishop Gallicano Mergè Born:1843.01.05 (Italy)Ordained Priest:1869.05.22Consecrated Bishop:1894.05.27Died:1897.07.07 († 54)Titular Bishop of Arethusus (1894.05.18 – 1897.07.07)Auxiliary Bishop of Palestrina (Italy) (1894.05.18 – 1897.07.07) |
| Archbishop Giacomo Merizzi Born:1834.08.15 (Italy)Ordained Priest:1857.03.28Consecrated Bishop:1891.12.20Died:1916.03.22 († 81)Bishop of Vigevano (Italy) (1891.12.14 – 1898.11.28)Titular Archbishop of Ancyra (1898.11.28 – 1902.08.21)Titular Archbishop of Mocissus (1902.08.21 – 1916.03.22) |
| Bishop Juan Merton, O.E.S.A. |
 Archbishop Arturo Mery Beckdorf Born:1903.10.01 (Chile)Ordained Priest:1926.10.28Consecrated Bishop:1941.05.11Died:1976.05.28 († 72)Titular Bishop of Parnassus (1941.03.22 – 1944.07.29)Auxiliary Bishop of Antofagasta (Chile) (1941.03.22 – 1944.07.29)Coadjutor Bishop of Valdivia (Chile) (1944.07.29 – 1955.04.20)Coadjutor Archbishop of Santiago (Chile) (1955.04.20 – 1961.05.14)Titular Archbishop of Phasis (1955.04.20 – 1976.05.28)Auxiliary Bishop of La Serena (Chile) (1961.05.14 – 1963)Coadjutor Archbishop of La Serena (Chile) (1963 – 1976.05.28) |
 Bishop Nikolaus Messmer, S.J. Born:1954.12.19 (Kazakhstan)Ordained Priest:1989.05.28Consecrated Bishop:2006.06.02Died:2016.07.18 († 61)Titular Bishop of Carmeiano (2006.03.18 – 2016.07.18)Apostolic Administrator of Kyrgyzstan (Kyrgyzstan) (2006.03.18 – 2016.07.18) |
| Bishop Anthony Francis Mestice Born:1923.12.06 (New York, NY, USA)Ordained Priest:1949.06.04Consecrated Bishop:1973.04.27Died:2011.04.29 († 87)Auxiliary Bishop of New York (USA) (1973.03.05 – 2001.10.30)Titular Bishop of Villa nova (1973.03.05 – 2011.04.29) |
 Archbishop Alejandro Mestre Descals, S.J. Born:1912.12.12 (Spain)Ordained Priest:1943.07.30Consecrated Bishop:1976.05.01Died:1988.06.26 († 75)Titular Bishop of Tigisi in Mauretania (1976.03.06 – 1982.06.28)Auxiliary Bishop of Sucre (Bolivia) (1976.03.06 – 1982.06.28)Coadjutor Archbishop of La Paz (Bolivia) (1982.06.28 – 1987.02.24)Titular Archbishop of Tigisi in Mauretania (1982.06.28 – 1988.06.26) |
 Bishop José María Mestres Born:1912.12.05 (Argentina)Ordained Priest:1934.07.29Consecrated Bishop:1974.04.21Died:1990.06.07 († 77)Auxiliary Bishop of Paraná (Argentina) (1974.03.07 – 1987.10.31)Titular Bishop of Dardanus (1974.03.07 – 1990.06.07) |
| Bishop Macaire Methode (Greek-Melkite Rite) |
| Bishop Heinrich Metzroth In veritate et caritateBorn:1893.12.17 (Germany)Ordained Priest:1916.08.12Consecrated Bishop:1941.06.08Died:1951.01.19 († 57)Titular Bishop of Thyatira (1941.05.12 – 1951.01.19)Auxiliary Bishop of Trier (Germany) (1941.05.12 – 1951.01.19) |
| Bishop Martinus Meurisse, O.F.M. Titular Bishop of Madauros (1628.06.19 – 1644.08.22)Auxiliary Bishop of Metz (France) (1628.06.19 – 1644.08.22) |
| Bishop Jacobus Meutravee, O.F.M. Titular Bishop of Rosmen (1543.09.24 – ?)Auxiliary Bishop of Noyon (France) (1543.09.24 – ?) |
 Bishop Ângelo Ademir Mezzari, R.C.J. (67) Titular Bishop of FiorentinoAuxiliary Bishop of São Paulo (Brazil)Rogate ergo |
| Bishop Elias Mhasseb (Maronite Rite) Consecrated Bishop:1717.09.14 |