| Milberg, Axel | Axel Milberg | Actor | 1989 - 2004 | 7 | 1 |
| Moore, Dermod | Dermod Moore | Actor | 1988 | 7 | |
| Messalas, Giorgos | Giorgos Messalas | Actor, Costume Designer, Director | 1993 - 2001 | 7 | 1 |
| Melin, Lars | Lars Melin | Actor | 1993 | 7 | |
| Möller-Lukasz, Gabriele | Gabriele Möller-Lukasz | Actor | 1995 - 2011 | 7 | 3 |
| Meskendahl, Oliver | Oliver Meskendahl | Actor | 1995 - 2014 | 7 | 2 |
| Mayorga, Juan | Juan Mayorga | Adaptation | 2007 - 2014 | 7 | 1 |
| Mandrović, Adam | Adam Mandrović | Actor, Director | 1888 - 1897 | 7 | |
| Maier, Sándor | Sándor Maier | Lighting Designer | 2012 - 2017 | 7 | |
| Marx, Thomas | Thomas Marx | Actor | 1998 - 2008 | 7 | |
| Martin-Granel, Pascal | Pascal Martin-Granel | Actor | 2003 - 2008 | 7 | |
| Musil, Vít | Vít Musil | Actor | 1998 - 2011 | 7 | |
| Miler, Eduard | Eduard Miler | Composer, Costume Designer, Director | 2004 - 2015 | 7 | 1 |
| Müller, Christoph | Christoph Müller | Actor | 2000 - 2006 | 7 | 1 |
| Macaria, Ana-Ioana | Ana-Ioana Macaria | Actor | 2004 - 2013 | 7 | |
| Maxwell, James | James Maxwell | Actor | 1959 - 1963 | 7 | 1 |
| Mehlhorn, Thomas | Thomas Mehlhorn | Actor | 2007 - 2011 | 7 | |
| Moritz, Kai Christian | Kai Christian Moritz | Actor | 2006 - 2013 | 7 | 1 |
| Morgan, Aaron | Aaron Morgan | Actor, Adaptation, Costume Designer, Designer, Director | 2009 - 2013 | 7 | |
| Mücke, Friedrich | Friedrich Mücke | Actor | 2008 - 2010 | 7 | 2 |
| Mybrand, Jan | Jan Mybrand | Actor | 2010 - 2017 | 7 | 3 |
| Mäder, Joachim | Joachim Mäder | Actor | 2008 | 7 | |
| Marianes, Eliana | Eliana Marianes | Actor | 2009 | 7 | |
| Münch, Erich | Erich Münch | Actor | 2010 | 7 | |
| Markuslund, Keld | Keld Markuslund | Actor | 1944 - 2003 | 7 | |
| Malin, Sarah | Sarah Malin | Actor | 2013 | 7 | |
| Milewski, Jurek | Jurek Milewski | Actor | 2013 | 7 | |
| Marber, Patrick Albert Crispin | Patrick Albert Crispin Marber | Adaptation, Translator | 2016 - 2023 | 7 | 1 |
| Meyer, Frieda | Frieda Meyer | Actor | 1898 - 1922 | 7 | |
| Marchidan, Ioana | Ioana Marchidan | Choreographer | 2015 - 2024 | 7 | |
| Mjølner, Alf | Alf Mjølner | Actor | 1948 - 1949 | 7 | |
| Michaïlidis, Andreas | Andreas Michaïlidis | Actor | 1973 | 7 | |
| Meads, Frederick | Frederick Meads | Actor | 1910 - 1912 | 7 | |
| Miltner-Schönau, Rudolf | Rudolf Miltner-Schönau | Actor | 1911 - 1912 | 7 | |
| Maier-Peveling, Georg | Georg Maier-Peveling | Costume Designer | 2021 | 7 | |
| Montes, Manuel Reyes | Manuel Reyes Montes | Actor, Designer | 2016 - 2018 | 7 | |
| Mundet, Agustín | Agustín Mundet | Translator | 1918 - 1925 | 7 | |
| Mastropasqua, Sergio | Sergio Mastropasqua | Actor | 2022 - 2024 | 7 | |
| Maehler, Tobias | Tobias Maehler | Director | 2023 | 7 | |
| Maehler, Sandra | Sandra Maehler | Producer | 2023 | 7 | |
| Messina, Lucia | Lucia Messina | Assistant Director | 2021 - 2023 | 7 | |
| Martucci, Eva | Eva Martucci | Actor | 2021 - 2023 | 7 | |
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