| Morger, Melchior | Melchior Morger | Actor | 1975 | 9 | |
| Michailidis, Kostis | Kostis Michailidis | Director | 1946 – 1975 | 9 | |
| Mago, - | - Mago (Max Goldstein) | Costume Designer, Designer | 1964 – 1968 | 9 | |
| Meter, Jeremy, van | Jeremy van Meter | Actor | 2012 – 2014 | 9 | |
| Müller, Heinz | Heinz Müller | Actor | 1981 – 2005 | 9 | |
| McRobbie, Peter | Peter McRobbie | Actor | 1966 – 1992 | 9 | |
| Mazis, Giorgos | Giorgos Mazis | Actor | 1985 | 9 | |
| Mantzaris, Christos | Christos Mantzaris | Actor | 1985 | 9 | |
| Myara, Charles | Charles Myara | Actor | 1988 | 9 | |
| Müller, Bernd-Dieter | Bernd-Dieter Müller | Adaptation, Designer, Director | 1989 – 2003 | 9 | |
| Mushran, Ashwin | Ashwin Mushran | Actor | 2014 – 2015 | 9 | |
| Murtinho, Kalma | Kalma Murtinho | Costume Designer | 1966 | 9 | |
| May, Alice | Alice May | Actor | 1891 | 9 | |
| Middleditch, Tom | Tom Middleditch | Actor | 2002 | 9 | |
| Mouhous, Hakim | Hakim Mouhous | Designer | 2004 – 2005 | 9 | |
| Missbach, Klaus | Klaus Missbach | Dramaturg | 2005 – 2017 | 9 | |
| Marrs, Bruce | Bruce Marrs | Mask Maker | 2005 – 2006 | 9 | |
| Monsaingeon, Grégoire | Grégoire Monsaingeon | Actor | 2007 | 9 | |
| Meininger, Laurent | Laurent Meininger | Actor | 2007 | 9 | |
| Massini, Fabrizio | Fabrizio Massini | Producer | 2014 – 2019 | 9 | |
| Maas, Kimberly | Kimberly Maas | Actor | 2009 | 9 | |
| Mălău, Ioana | Ioana Mălău | Dramaturg | 2017 – 2019 | 9 | |
| Ménoret, Laurent | Laurent Ménoret | Actor | 2012 – 2015 | 9 | |
| Maddern, Mary, | Mary Maddern | Actor | 1902 – 1904 | 10 | |
| Mitra, Sambhu, | Sambhu Mitra | Actor, Adaptation, Director, Translator | 1952 – 1958 | 10 | |
| Murchison, Ruari | Ruari Murchison | Designer | 2002 – 2006 | 10 | |
| Molron, France, | France Molron | Actor | 1975 – 1977 | 10 | |
| Merten, Thorsten | Thorsten Merten | Actor | 1994 – 1998 | 10 | |
| Moen, Ingvald | Ingvald Moen | Actor | 1974 | 10 | |
| Mestrez, Hubert, | Hubert Mestrez | Actor | 1975 – 1977 | 10 | |
| Mackert, Pia Maria | Pia Maria Mackert | Costume Designer, Designer | 2011 – 2012 | 10 | |
| Michelsen, Elisa, | Elisa Michelsen | Actor | 1877 – 1881 | 10 | |
| Madsen, Axel, | Axel Madsen | Actor | 1880 – 1902 | 10 | |
| Malmgren, Oskar, | Oskar Malmgren | Director, Translator | 1878 – 1885 | 10 | |
| Marx, Carl, | Carl Marx | Actor | 1883 | 10 | |
| Michelsen, Frk., | Frk. Michelsen | Actor | 1889 | 10 | |
| Mušek, Karel, | Karel Mušek | Actor | 1891 – 1921 | 10 | |
| Marini, Virginia, | Virginia Marini | Actor | 1892 | 10 | |
| Moro-Pilotto, Antonietta, | Antonietta Moro-Pilotto | Actor | 1892 – 1893 | 10 | |
| Meßthaler, Emil, | Emil Meßthaler | Actor | 1894 | 10 | |
| Mehnert, Lothar, | Lothar Mehnert | Actor, Director | 1895 – 1920 | 10 | |
| Meißner, Käthe, | Käthe Meißner | Actor | 1912 | 10 | |
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