| Mágori, Mária | Mária Mágori | Actor | 1924 - 1943 | 53 | |
| Magregor, Norval | Norval Magregor | Actor | 1904 | 2 | |
| Magris, Claudio | Claudio Magris | Translator | 1974 - 2020 | 21 | 1 |
| Magrofuoco, Jacques | Jacques Magrofuoco | Sound Designer | 1986 | 2 | |
| Magruder, James | James Magruder | Dramaturg | 1994 | 1 | |
| Magry, Fabien | Fabien Magry | Actor | 2016 - 2024 | 5 | |
| Maguire, Eamon | Eamon Maguire | Actor | 1996 | 1 | |
| Maguire, Georgia | Georgia Maguire | Actor | 2009 | 1 | |
| Maguire, Geraldine | Geraldine Maguire | Actor | 1991 | 1 | |
| Maguire, Jim | Jim Maguire | Actor | 1960 | 2 | |
| Maguire, Leo | Leo Maguire | Actor | 1963 | 1 | |
| Magyar, Attila | Attila Magyar | Actor | 2013 | 1 | |
| Magyar, Éva | Éva Magyar | Actor | 2016 - 2018 | 27 | |
| Magyar, Fruzsina | Fruzsina Magyar | Dramaturg | 1991 - 2006 | 3 | |
| Magyari, - | - Magyari | Actor | 1909 | 1 | |
| Magyari, Etelka | Etelka Magyari | Actor | 2012 - 2013 | 5 | |
| Mahadeva | - Mahadeva | Actor | 1995 | 4 | |
| Mahaffey, Valerie | Valerie Mahaffey | Actor | 1990 | 1 | 1 |
| Mahaffy, Jr., Robert, E. | Robert E. Mahaffy, Jr. | Designer | 1931 - 1936 | 2 | |
| Mahajan, Kartik | Kartik Mahajan | Actor | 2005 - 2006 | 2 | |
| Mahajan, Prajyot | Prajyot Mahajan | Musical Director | 2014 | 1 | |
| Mahalup, Ms | Ms Mahalup | Actor | 1891 | 1 | |
| Mahamood Ansari, Atta | Atta Mahamood Ansari | Assistant Director | 1992 | 1 | |
| Mahamoud, Khalid | Khalid Mahamoud | Actor | 2022 | 47 | |
| Mahamud, Abdi | Abdi Mahamud | Actor | 2012 | 1 | |
| Mahaney, Richard A. | Richard A. Mahaney | Designer | 1988 | 1 | |
| Mahanta, Alok | Alok Mahanta | Actor | 2004 | 1 | |
| Mahar, Ellen | Ellen Mahar | Actor | 1937 | 1 | |
| Mahavir, Abhay, Sharma | Abhay Sharma Mahavir | Composer | 2012 | 1 | |
| Mahbub, Tariq | Tariq Mahbub | Lighting Designer | 2009 | 1 | |
| Mahdavi, Milan | Milan Mahdavi | Actor | 2022 | 1 | |
| Mahdavi, Sara | Sara Mahdavi | Assistant Director | 2021 | 1 | |
| Mahdi, Nadia | Nadia Mahdi | Actor | 2013 | 1 | |
| Maher, Antoinette | Antoinette Maher | Actor | 1967 | 1 | |
| Maher, Chris | Chris Maher | Director | 2011 | 1 | |
| Maher, Daniel | Daniel Maher | Actor | 2012 | 1 | |
| Maher, Danny | Danny Maher | Lighting Designer | 2012 | 1 | |
| Maher, John | John Maher | Actor | 1969 | 1 | |
| Maher, Matt | Matt Maher | Actor | 2016 | 1 | |
| Maher, Matthew | Matthew Maher | Actor | 2011 - 2020 | 2 | 3 |
| Mahesh, Gaddam | Gaddam Mahesh | Musician | 2015 | 1 | |
| Mahian, Afsaneh | Afsaneh Mahian | Actor | 2008 - 2009 | 2 | |
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