| Maxwell, David | David Maxwell | Actor | 1993 | 1 | |
| McCrann, Michael | Michael McCrann | Actor | 1993 | 1 | |
| Mathews, Terry | Terry Mathews | Actor | 1993 | 1 | |
| Moores, Tony | Tony Moores | Actor | 1993 | 1 | |
| McLoughlin, Brian | Brian McLoughlin | Lighting Designer | 1993 | 1 | |
| Marquardt, Philipp | Philipp Marquardt | Actor | 1993 | 1 | |
| Maciejewska, Magdalena | Magdalena Maciejewska | Actor, Designer | 1991 - 1999 | 2 | |
| Michalke, Reinhard | Reinhard Michalke | Actor | 1993 - 2000 | 53 | |
| Mitzscherling, Monika | Monika Mitzscherling | Actor | 1993 | 1 | |
| Max, Bruno | Bruno Max | Director | 1991 | 1 | |
| Miniberger, Clemens | Clemens Miniberger | Actor | 1991 | 1 | |
| Mantakas, Christos | Christos Mantakas | Actor | 1994 | 1 | |
| Mellas, Grigoris | Grigoris Mellas | Actor | 1994 | 1 | |
| Miësch, Markus | Markus Miësch | Lighting Designer | 1993 | 1 | |
| Markstein, Rudolf | Rudolf Markstein | Actor | 1993 | 1 | |
| Mann, Dieter | Dieter Mann | Actor | 1993 | 1 | |
| Mahneke, Iris | Iris Mahneke | Actor | 1993 | 1 | |
| Mécs, Károly | Károly Mécs | Actor | 1991 | 1 | |
| Molnár, Judit | Judit Molnár | Actor | 1991 - 2006 | 2 | |
| Melin, Lars | Lars Melin | Actor | 1993 | 7 | |
| Mosleh, Siham | Siham Mosleh | Actor | 1993 | 3 | |
| Maesschalck, Ruurt, de | Ruurt de Maesschalck | Actor | 1991 - 2004 | 115 | |
| McGuire, William, Francis | William Francis McGuire | Actor | 1993 | 2 | |
| Makraki, Anna | Anna Makraki | Actor | 1991 | 1 | |
| Manolas, Giorgos | Giorgos Manolas | Actor | 1991 | 1 | |
| Manolas, Antonis | Antonis Manolas | Actor | 1991 | 1 | |
| Mesaris, Kostas | Kostas Mesaris | Actor | 1991 | 1 | |
| Morogiannis, Giorgos | Giorgos Morogiannis | Actor | 1981 - 1991 | 11 | |
| Mesterházy, Gyula | Gyula Mesterházy | Actor | 2004 - 2006 | 2 | |
| Mihályffy, Károly | Károly Mihályffy | Actor | 1908 | 1 | |
| Monteiro, Roméo | Roméo Monteiro | Actor, Musician | 2012 - 2018 | 32 | |
| Mukherjee, Sharbani | Sharbani Mukherjee | Actor | 2014 | 1 | |
| Mushran, Ashwin | Ashwin Mushran | Actor | 2014 - 2018 | 9 | |
| Mortelliti, Adriana | Adriana Mortelliti | Choreographer | 2014 | 1 | |
| Marty, Charles | Charles Marty | Designer | 1994 | 1 | |
| Marr, Oceana | Oceana Marr | Actor | 1994 | 1 | |
| Möckel, Thomas | Thomas Möckel | Conductor | 1994 | 1 | |
| Møller, Trine, Bastrup | Trine Bastrup Møller | Actor | 2015 | 1 | |
| Max | Max - | Actor | 2015 | 1 | |
| Miquel, Jean-Pierre | Jean-Pierre Miquel | Adaptation, Director, Lighting Designer | 1982 - 2002 | 4 | |
| Müller, Mareille | Mareille Müller | Actor | 1982 | 1 | |
| McPherson, Alexander | Alexander McPherson | Costume Designer, Designer | 1971 - 1982 | 3 | |
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