| Moran, Catherine | Catherine Moran | Costume Designer, Mask Maker | 2008 | 2 | |
| Meringdal, Otto Georg, Valtteri | Otto Georg Valtteri Meringdal | Actor | 2016 - 2017 | 2 | |
| Mees, Siegbert | Friedrich Siegbert Mees | Conductor | 1926 - 1938 | 2 | |
| Müller-Multa, Ernst | Ernst Müller-Multa | Designer, Director | 1939 | 2 | |
| Meskhishvili, Lado | Lado Meskhishvili | Actor, Director | 1898 | 2 | |
| Marcondes, Noêmia | Noêmia Marcondes | Actor | 1965 | 2 | |
| Marencke, Robert | Robert Marencke | Actor | 1965 - 1970 | 2 | |
| Mountain, Polly | Polly Mountain | Actor | 2008 | 2 | |
| Manning, Louis, Jewel | Louis Jewel Manning | Actor | 1892 - 1896 | 2 | |
| Maude, Arthur | Arthur Maude | Actor | 1906 - 1907 | 2 | |
| Masutani, Kyoko | Kyoko Masutani | Actor | 2008 | 2 | |
| Matz, Johanna | Johanna Matz | Actor | 1952 - 1965 | 2 | |
| Marwitz, Michael | Michael Marwitz | Actor | 1986 | 2 | |
| Matousek, Florence | Florence Matousek | Actor | 2009 - 2013 | 2 | 1 |
| Mohr, Matthias | Matthias Mohr | Composer | 2009 | 2 | |
| McAlister, Michael | Michael McAlister | Actor | 2009 | 2 | |
| Mulqueen, Rachel | Rachel Mulqueen | Actor | 2009 | 2 | |
| Murray, Michael | Michael Murray | Adaptation, Director | 2009 | 2 | 1 |
| Musevski, Peter | Peter Musevski | Actor | 2008 - 2019 | 2 | |
| Monaghan III, Joseph P. | Joseph P. Monaghan III | Lighting Designer, Sound Designer | 2009 | 2 | |
| Müller, C. R. | C. R. Müller | Costume Designer, Designer | 2008 | 2 | 1 |
| Montemurro, JoAnn | JoAnn Montemurro | Actor, Costume Designer | 2009 | 2 | |
| Maho, Christin | Christin Maho | Actor | 2008 - 2009 | 2 | |
| Mumenthaler, Franz | Franz Mumenthaler | Actor | 2008 - 2009 | 2 | |
| Marchand, Jean-Pierre | Jean-Pierre Marchand | Actor | 2008 - 2009 | 2 | |
| Mirmiran, Nadja | Nadja Mirmiran | Actor | 2010 | 2 | |
| Mazloomi, Mir, Taher | Mir Taher Mazloomi | Actor | 2009 - 2010 | 2 | |
| Mitchell, Larry | Larry Mitchell | Actor | 2010 - 2017 | 2 | |
| Moran, Buzz | Buzz Moran | Sound Designer | 2010 - 2011 | 2 | |
| Murphy, Lainey | Lainey Murphy | Actor | 2010 | 2 | |
| Mittermeier, Markus | Markus Mittermeier | Musical Director, Musician | 2010 | 2 | |
| Matsuno, Jun | Jun Matsuno | Designer | 2010 | 2 | |
| Mitterstieler, Georg | Georg Mitterstieler | Actor | 2009 - 2017 | 2 | |
| Marriage, Oliver | Oliver Marriage | Actor | 2009 | 2 | |
| Moen, Tuva | Tuva Moen | Actor | 2015 - 2023 | 2 | |
| Meling, Ina | Ina Meling | Actor | 2009 | 2 | |
| Müller, Anja | Anja Müller | Costume Designer, Designer | 2009 - 2017 | 2 | |
| Mollo-Christensen, Sarah | Sarah Mollo-Christensen | Actor, Dancer | 2009 | 2 | |
| MacDonald, Laura Lynn | Laura Lynn MacDonald | Adaptation, Translator | 2009 | 2 | 1 |
| Malmberg, Karl | Karl Malmberg | Actor | 2010 - 2011 | 2 | 2 |
| Mägi, Arvi | Arvi Mägi | Actor | 2001 - 2010 | 2 | |
| Morris, Lewis | Lewis Morris | Actor | 2010 | 2 | |
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