| Mihula, Richard | Richard Mihula | Adaptation, Director | 1965 | 2 | |
| Mayerová, Carmen | Carmen Mayerová | Actor | 1965 | 2 | |
| Meyers, Emerson | Emerson Meyers | Composer, Conductor | 1965 | 2 | |
| Murdock, Mike | Mike Murdock | Actor | 1965 | 2 | |
| Maramenos, Giorgos | Giorgos Maramenos | Actor | 1965 - 1979 | 2 | |
| Malik, Helmut | Helmut Malik | Actor | 1965 | 2 | |
| Müller, Klaus | Klaus Müller | Actor | 1965 | 2 | |
| Mitsakis, Vasilis | Vasilis Mitsakis | Actor | 1964 - 1965 | 2 | |
| Maitre, Martin, le | Martin le Maitre | Actor | 2015 - 2016 | 2 | |
| Minnaar, Dawid | Dawid Minnaar | Actor | 2015 - 2016 | 2 | |
| Möller, Dirk | Dirk Möller | Actor | 2002 | 2 | |
| Mills-Cockell, John | John Mills-Cockell | Composer, Sound Designer | 2002 | 2 | |
| Modern, B. | B. Modern | Costume Designer | 2002 - 2023 | 2 | |
| Moore, Mark | Mark Moore | Actor | 2002 - 2013 | 2 | |
| Morishita, Takashi | Takashi Morishita | Actor | 2001 - 2002 | 2 | |
| Miketić, Miloš | Miloš Miketić | Actor | 2002 | 2 | |
| Milin, Srba | Srba Milin | Actor | 2002 | 2 | |
| Merker, Raimund | Raimund Merker | Actor | 1989 | 2 | |
| Meyerhoff, Joachim | Joachim Meyerhoff | Actor | 2002 - 2017 | 2 | 1 |
| Moucka, Peter | Peter Moucka | Actor | 2002 - 2003 | 2 | |
| Manousopoulou, Katerina | Katerina Manousopoulou | Actor | 2002 | 2 | |
| Maerten, Hugo | Hugo Maerten | Actor | 2002 | 2 | |
| Moreau, Isabelle | Isabelle Moreau | Actor | 1997 | 2 | |
| Markovits, Bori | Bori Markovits | Actor | 2012 | 2 | |
| Murauer, Herbert | Herbert Murauer | Costume Designer, Designer | 2003 | 2 | 1 |
| Murenc, Andrej | Andrej Murenc | Actor | 2003 - 2016 | 2 | |
| Mann, Sharon | Sharon Mann | Actor | 1989 | 2 | |
| May, Victoria | Victoria May | Dancer | 2001 | 2 | |
| Mapelli, Claudio | Claudio Mapelli | Sound Designer | 1989 | 2 | |
| Metzger, Heike | Heike Metzger | Actor | 1989 | 2 | |
| Mongelli, Giovanni | Giovanni Mongelli | Actor | 2003 - 2005 | 2 | |
| Milhaud, Darius | Darius Milhaud | Composer | 2003 - 2005 | 2 | |
| Müller, Ulrike | Ulrike Müller | Actor | 2003 - 2004 | 2 | 1 |
| Martot, Pierre | Pierre Martot | Actor | 2003 | 2 | |
| Merle, Frank | Frank Merle | Adaptation, Director | 2003 | 2 | |
| Mägi, Laine | Laine Mägi | Actor | 2003 - 2022 | 2 | 2 |
| Marx, Marius | Marius Marx | Actor | 2003 | 2 | 1 |
| Maresca, Sydney | Sydney Maresca | Costume Designer | 2000 - 2001 | 2 | |
| Markussen, Erlend, Haugen | Erlend Haugen Markussen | Musical Director, Musician | 2015 | 2 | |
| Muszte, Anna | Anna Muszte | Actor | 1971 - 1975 | 2 | |
| Mouro, Luís | Luís Mouro | Costume Designer, Designer | 2015 | 2 | |
| McEvoy, Jennifer | Jennifer McEvoy | Actor | 2003 | 2 | |
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