| Melník, Lukáš | Lukáš Melník | Actor | 2025 | 2 | |
| Mikalsen Deinboll, Ingrid | Ingrid Mikalsen Deinboll | Actor | 2025 | 1 | |
| Mollard, Saskia | Saskia Mollard | Actor | 2025 | 1 | |
| Maria, Lúcia | Lúcia Maria | Actor | 2016 | 1 | |
| McCain, Claudia | Claudia McCain | Actor | 2025 | 1 | |
| McGery, Megan | Megan McGery | Actor | 2023 | 2 | |
| Martin, Michael | Michael Martin | Actor | 2023 | 2 | |
| Mackay-Brice, Graham | Graham Mackay-Brice | Actor | 2024 | 1 | |
| Maïdou, Prudence | Prudence Maïdou | Actor | 2022 | 1 | |
| Migan, Bardol | Bardol Migan | Actor | 2022 | 1 | |
| Mosley, Caleb | Caleb Mosley | Actor | 2025 | 1 | |
| Malin, Anja Somerro | Anja Somerro Malin () | Actor | 2025 | 1 | |
| Martineau, Chantal | Chantal Martineau () | Actor | 2025 | 1 | |
| Morgan, Autumn Simone | Autumn Simone Morgan () | Actor | 2025 | 1 | |
| Moran, Lautaro | Lautaro Moran (Lautaro Morán) | Actor | 2025 | 1 | |
| Macdonald, David Andrew | David Andrew Macdonald () | Actor | 2025 | 1 | |
| Marafusta, Mafalda | Mafalda Marafusta () | Actor | 2026 | 1 | |
| Marin , Moises | Moises Marin (Moisés Marín) | Actor | 2025 - 2026 | 2 | |
| Moura, Salvador | Salvador Moura () | Actor | 2025 | 2 | |
| Moura, Jose | Jose Moura (José Moura) | Actor | 2025 | 2 | |
| Molina, Jovita | Jovita Molina () | Actor | 2025 | 1 | |
| Maestas, Leonard | Leonard Maestas () | Actor | 2025 | 1 | |
| Martinez, Misha | Misha Martinez () | Actor | 2025 | 1 | |
| Myhr, Marie Haug | Marie Haug Myhr | Actor, Adaptation | 2010 | 2 | |
| Moreno, Alexis | Alexis Moreno | Actor, Adaptation | 2012 - 2018 | 4 | 1 |
| Mishra, Sindhu | Sindhu Mishra | Actor, Adaptation | 2007 | 2 | |
| Martin, Michele | Michele Martin | Actor, Adaptation | 2017 | 2 | |
| Montgomery, Douglass | Douglass Montgomery | Actor, Adaptation | 1932 - 1952 | 4 | |
| Morin, Olivier | Olivier Morin | Actor, Adaptation | 2017 | 2 | |
| Malzacher, Dieter | Dieter Malzacher | Actor, Adaptation | 1993 | 2 | 1 |
| Moreira, Edgardo | Edgardo Moreira | Actor, Adaptation | 2018 | 3 | |
| Martín, María | María Martín | Actor, Adaptation | 1971 - 1972 | 4 | |
| Merlino, María | María Merlino | Actor, Adaptation | 2016 | 2 | |
| Müller, Ida | Ida Müller | Actor, Adaptation, Costume Designer, Designer, Director | 2006 - 2013 | 40 | 3 |
| Morgan, Aaron | Aaron Morgan | Actor, Adaptation, Costume Designer, Designer, Director | 2009 - 2013 | 7 | |
| Mejerhol'd, Vsevolod | Vsevolod Mejerhol'd (Всеволод Мейерхольд) | Actor, Adaptation, Designer, Director | 1900 - 1924 | 45 | 1 |
| Mørk-Eidem, Alexander | Alexander Mørk-Eidem | Actor, Adaptation, Designer, Director | 1991 - 2016 | 32 | 2 |
| Methling, Svend | Svend Methling | Actor, Adaptation, Designer, Director | 1921 - 1964 | 9 | 1 |
| Martin, Christopher | Christopher Martin | Actor, Adaptation, Designer, Director | 1974 - 1981 | 10 | 1 |
| Marini, Giuseppe | Giuseppe Marini | Actor, Adaptation, Director | 1994 - 2023 | 50 | 1 |
| Meyer, Jean | Jean Meyer | Actor, Adaptation, Director | 1976 - 1984 | 6 | |
| Murchio, Andrea | Andrea Murchio | Actor, Adaptation, Director | 2008 - 2011 | 12 | |
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