| Manger, Burkhard | Burkhard Manger | Costume Designer, Designer | 1984 | 2 | |
| Matheis, Ilse | Ilse Matheis | Actor | 1984 | 1 | |
| Maagaard, Jan | Jan Maagaard | Adaptation, Director, Translator | 1992 - 2002 | 7 | |
| Mazák, Jan | Jan Mazák | Actor | 1984 | 1 | |
| Meierová, Blanka | Blanka Meierová | Actor | 1984 | 1 | |
| McDonnell, Emily, Cass | Emily Cass McDonnell | Actor | 2013 | 1 | |
| Munk, Holger | Holger Munk | Actor | 1964 - 1978 | 2 | |
| Markle, Christopher | Christopher Markle | Director | 1984 | 1 | |
| MacIntosh, Joan | Joan MacIntosh | Actor | 1984 | 1 | |
| McCann, Christopher | Christopher McCann | Actor | 1984 - 2001 | 5 | |
| Maas, Hidde | Hidde Maas | Actor | 1984 - 1989 | 37 | |
| Mayer, Christian | Christian Mayer | Dramaturg | 2007 - 2012 | 2 | |
| Morgan, Caryl | Caryl Morgan | Actor | 2012 | 2 | |
| Ma, Benjamin | Benjamin Ma | Actor | 2001 | 1 | |
| Moore, Vivienne | Vivienne Moore | Actor | 2012 | 2 | |
| Metzger, Sam | Sam Metzger | Actor | 2012 | 1 | |
| Matthisen, Roger | Roger Matthisen | Actor | 2001 | 2 | |
| McKitrick, Charlie | Charlie McKitrick | Actor | 2012 | 1 | |
| Mestre, Carmen | Carmen Mestre | Actor | 2012 | 1 | |
| Merry, Alice | Alice Merry | Actor | 2012 | 1 | |
| Magennis, Dermot | Dermot Magennis | Actor | 2012 - 2013 | 2 | |
| Mobley, James | James Mobley | Designer | 2012 | 1 | |
| Maddison, Diana | Diana Maddison | Actor | 2012 | 1 | |
| Milicia, Tom | Tom Milicia | Actor | 2012 | 1 | |
| Mear, Chris | Chris Mear | Musician | 2012 | 1 | |
| Milanian, Neusha | Neusha Milanian | Actor | 2012 | 1 | |
| Müller, Moritz | Moritz Müller | Designer | 2012 - 2016 | 5 | |
| May, Doug | Doug May | Actor | 2012 | 1 | |
| Marquardsen, Joan | Joan Marquardsen | Actor | 2002 | 1 | |
| Mørk, Thomas | Thomas Mørk | Actor | 1993 | 1 | |
| Malmberg, Benoît | Benoît Malmberg | Director, Producer | 2012 | 3 | |
| Marshall, Thomasin | Thomasin Marshall | Designer | 2012 | 1 | |
| Moreno, Alexis | Alexis Moreno | Actor, Adaptation | 2012 - 2018 | 4 | |
| Medo, Hans | Hans Medo | Actor | 1957 - 1963 | 2 | |
| MacNeil, Ian | Ian MacNeil | Designer | 1986 - 2016 | 6 | |
| McSeveney, David | David McSeveney | Sound Designer | 2012 - 2016 | 5 | |
| Martin, Caroline | Caroline Martin | Actor | 2012 - 2016 | 5 | |
| Maher, Danny | Danny Maher | Lighting Designer | 2012 | 1 | |
| McCann, Reid | Reid McCann | Sound Designer | 2012 | 1 | |
| Maher, Daniel | Daniel Maher | Actor | 2012 | 1 | |
| Mixer, Grupa | Grupa Mixer | Costume Designer | 2012 | 1 | |
| Mierzwa, Anna | Anna Mierzwa | Actor | 2012 | 1 | |
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