| Mucchiano, Pia | Pia Mucchiano | Actor | 1991 - 1993 | 15 | |
| Modsakul, Oruma | Oruma Modsakul | Actor, Costume Designer | 2005 | 15 | |
| Mercado, Antonio | Antonio Mercado | Director, Lighting Designer | 2006 - 2007 | 15 | |
| Merino, Anna | Anna Merino | Mask Maker | 2008 | 15 | |
| Morris, McKay | McKay Morris | Actor | 1935 - 1939 | 15 | |
| Müller, Betty | Betty Müller | Actor | 1895 | 15 | |
| McNulty, Finnuala | Finnuala McNulty | Lighting Designer | 2001 - 2008 | 14 | |
| Marussig, Ms. | Ms. Marussig | Actor | 1892 - 1908 | 14 | |
| Marrené-Morzkowska, Waleria | Waleria Marrené-Morzkowska | Translator | 1899 - 1958 | 14 | |
| Meinhard, Carl | Carl Meinhard | Actor, Director | 1901 - 1919 | 14 | |
| Myhre, Torhild Ø. | Torhild Ø. Myhre | Actor | 1996 - 2004 | 14 | |
| Meling, Audun | Audun Meling | Actor | 1983 - 1997 | 14 | 1 |
| Mukhopadhyay, Senjuti | Senjuti Mukhopadhyay | Actor | 2006 - 2010 | 14 | 2 |
| Massari, Liliana | Liliana Massari | Actor | 1995 - 2012 | 14 | |
| Martino, Federica Di | Federica Di Martino | Actor | 2013 - 2018 | 14 | |
| Mosler, Marlit | Marlit Mosler | Costume Designer, Designer | 2002 | 14 | |
| Mildeová, Zuzana | Zuzana Mildeová | Adaptation, Dramaturg | 2009 - 2012 | 14 | |
| Miller, Sofie | Sofie Miller | Actor | 2005 - 2006 | 14 | |
| Magry, Fabien | Fabien Magry | Actor | 2016 - 2025 | 14 | |
| Mari, Pasquale | Pasquale Mari | Lighting Designer | 1999 - 2021 | 14 | |
| Miftahelkehir, Abdesamade | Abdesamade Miftahelkehir | Actor | 2002 | 14 | |
| Musio, Paolo | Paolo Musio | Actor | 2019 - 2020 | 14 | |
| Minati, Alessandro | Alessandro Minati | Actor | 2019 - 2020 | 14 | |
| Marín, Santi | Santi Marín | Actor | 2024 - 2025 | 14 | |
| Mell, Maria | Maria Mell | Actor | 1909 - 1952 | 13 | |
| MacHugh, Tina | Tina MacHugh | Lighting Designer | 1990 - 2000 | 13 | |
| Masi, Napoleone | Napoleone Masi | Actor | 1892 - 1894 | 13 | |
| Marikos, Athanasios | Athanasios Marikos | Actor | 1896 - 1928 | 13 | |
| Müller-Hanno, Otto | Otto Müller-Hanno | Actor, Director | 1916 - 1938 | 13 | |
| Michnowska, Stefania | Stefania Michnowska | Actor | 1906 - 1924 | 13 | |
| Mathisen, Gørli | Gørli Mathisen | Actor | 1971 - 2000 | 13 | |
| Meren, Turid | Turid Meren | Actor | 1989 - 1998 | 13 | |
| McColl, Colin | Colin McColl | Actor, Director | 1969 - 2017 | 13 | 1 |
| Mittet, Hans Marius Hoff | Hans Marius Hoff Mittet | Actor | 1999 - 2019 | 13 | |
| Münzner, Susanne | Susanne Münzner | Costume Designer, Designer | 2004 - 2015 | 13 | 1 |
| Meirik, Victoria H. | Victoria H. Meirik | Adaptation, Director | 2003 - 2023 | 13 | 1 |
| Melberg, Margarita | Margarita Melberg (Μαργαρίτα Μέλμπεργκ) | Translator | 1994 - 2024 | 13 | 1 |
| Morand, Philippe | Philippe Morand | Director | 1993 | 13 | |
| Maechler, Valérie | Valérie Maechler | Actor | 1993 | 13 | |
| Meduna, Jan | Jan Meduna | Actor | 2010 - 2013 | 13 | 1 |
| Moss, Arthur | Arthur Moss | Actor | 2007 - 2011 | 13 | 1 |
| Marchand, Marc | Marc Marchand | Actor | 2011 | 13 | |
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