| Mazzanti, Ettore | Ettore Mazzanti | Actor | 1891 - 1907 | 21 | 1 |
| McCormick, F.J. | F. J. McCormick | Actor | 1923 - 1929 | 5 | 1 |
| Menni, Fiorenza | Fiorenza Menni | Actor, Costume Designer, Dramaturg | 1999 - 2002 | 30 | 1 |
| Mogendorf, Thomas | Thomas Mogendorf | Costume Designer, Designer | 1983 - 2006 | 16 | 1 |
| Merin, Eda Reiss | Eda Reiss Merin | Actor | 1971 | 2 | 1 |
| Mansfield, Richard | Richard Mansfield | Actor, Director | 1889 - 1907 | 24 | 1 |
| Mitchell, Dodson | Dodson Mitchell | Actor | 1906 - 1918 | 17 | 1 |
| Miller, Henry | Henry Miller | Director | 1906 - 1907 | 5 | 1 |
| Mann, Tiffani | Tiffani Mann | Actor | 2004 | 1 | 1 |
| Meyboom, Margaretha | Margaretha Meyboom | Translator | 1908 - 1955 | 3 | 1 |
| Maché, Katinka | Katinka Maché | Actor | 2010 | 6 | 1 |
| Matthiessen, Joam | Joan Matthiessen | Actor | 1989 | 2 | 1 |
| Mumford, Peter | Peter Mumford | Designer, Lighting Designer | 1996 - 2016 | 18 | 1 |
| Moodie, Tanya | Tanya Moodie | Actor | 1994 - 2005 | 7 | 1 |
| Merő, Béla | Béla Merő | Director | 2005 - 2010 | 2 | 1 |
| Mira, János | János Mira | Designer | 2010 | 1 | 1 |
| Margot, Hedwig | Hedwig Margot | Actor | 1896 - 1908 | 26 | 1 |
| Myren, Eivind | Eivind Myren | Lighting Designer | 2010 - 2024 | 61 | 1 |
| Müller, Eva Verena | Eva Verena Müller | Actor | 2011 - 2012 | 2 | 1 |
| Mackert, Pia Maria | Pia Maria Mackert | Costume Designer, Designer | 2011 - 2022 | 11 | 1 |
| Mack, William B. | William B. Mack | Actor | 1903 - 1907 | 8 | 1 |
| Melato, Mariangela | Mariangela Melato | Actor | 2011 | 2 | 1 |
| Massafra, Marco | Marco Massafra | Actor | 2010 - 2022 | 2 | 1 |
| Moen, Merete | Merete Moen | Actor | 1978 - 2010 | 15 | 1 |
| Mutale, Mazimba | Mazimba Mutale | Actor | 2010 | 1 | 1 |
| Minzi, Liu | Liu Minzi | Actor | 2010 | 1 | 1 |
| Monsen, Sophie | Sophie Monsen | Actor | 1861 - 1862 | 2 | 1 |
| Meier, Emma | Emma Meier | Actor | 1872 | 2 | 1 |
| Madsen, Axel | Axel Madsen | Actor | 1880 - 1915 | 10 | 1 |
| Mallander, Gustaf | Gustaf Mallander | Actor | 1878 | 1 | 1 |
| Martersteig, Max | Max Martersteig | Actor, Adaptation, Director | 1878 - 1918 | 16 | 1 |
| Martinsson, Herman | Herman Martinsson | Actor | 1878 | 2 | 1 |
| Mozart, Wolfgang Amadeus | Wolfgang Amadeus Mozart | Composer | 1879 - 2008 | 7 | 1 |
| Møller, Christian | Christian Møller | Actor | 1885 - 1894 | 16 | 1 |
| Malmgren, Sigge | Sigge Malmgren | Actor | 1882 - 1895 | 16 | 1 |
| Møller, Alfred | Alfred Møller | Actor | 1887 - 1901 | 4 | 1 |
| Meyer, Clara | Clara Meyer | Actor | 1889 | 1 | 1 |
| Meery, Hans | Hans Meery | Director | 1889 - 1914 | 33 | 1 |
| Matthaes, Heinrich | Heinrich Matthaes | Actor | 1889 - 1913 | 17 | 1 |
| Müller, Hermann | Hermann Müller | Actor | 1894 - 2020 | 3 | 1 |
| Matkowsky, Adalbert | Adalbert Matkowsky | Actor | 1891 | 1 | 1 |
| Magnusson, Julia | Julia Magnusson | Actor | 1892 - 1898 | 6 | 1 |
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