| McDevitt, Lorna | Lorna McDevitt | Actor | 2005 | 6 | |
| McCallum, Eileen | Eileen McCallum | Actor | 2005 | 6 | |
| Mikkola, Katriina | Katriina Mikkola | Actor | 2005 | 4 | |
| Mikkonen, Timo | Timo Mikkonen | Actor | 2005 | 2 | |
| Mattila, Liisamaija | Liisamaija Mattila | Actor | 2005 | 1 | |
| Macartney, Edward | Edward Macartney | Actor | 2005 | 1 | |
| Matĕjová, Libuše | Libuše Matĕjová | Actor | 1955 | 1 | |
| Mecwaldowski, Wojciech | Wojciech Mecwaldowski | Actor | 2005 - 2006 | 3 | |
| McIntosh, Yanna | Yanna McIntosh | Actor | 2005 | 1 | |
| McCamus, Tom | Tom McCamus | Actor | 2005 | 1 | |
| Manson, Ross | Ross Manson | Actor, Director | 2000 - 2005 | 2 | |
| Matĕjovský, Jan | Jan Matĕjovský | Director | 1955 | 1 | |
| Mertens, Wim | Wim Mertens | Composer | 2005 | 3 | |
| Mayr, Christel | Christel Mayr | Actor | 2005 - 2015 | 5 | |
| Mühleisen, Günter | Günter Mühleisen | Actor | 2005 | 1 | |
| Mohr, Maria | Maria Mohr | Actor | 2005 | 1 | |
| Moger, Andrew | Andrew Moger | Actor | 2001 | 1 | |
| Moss, Cat | Cat Moss | Actor | 2001 | 1 | |
| Müllerová, Marie | Marie Müllerová | Actor | 1947 | 1 | |
| Mestek, Jan | Jan Mestek | Actor | 1946 | 1 | |
| Modsakul, Oruma | Oruma Modsakul | Actor, Costume Designer | 2005 | 15 | |
| Moltzen, Peter | Peter Moltzen | Actor | 2005 - 2007 | 6 | |
| Máj, Karel | Karel Máj | Actor | 1946 | 1 | |
| Májová, Jarmila | Jarmila Májová | Actor | 1946 | 1 | |
| Mosorescu , George | George Mosorescu | Costume Designer, Designer | 2010 | 4 | |
| McCreery, Helen | Helen McCreery | Actor | 2005 | 1 | |
| Morton, Julia | Julia Morton | Actor | 2005 | 1 | |
| Maloney, Margaret | Margaret Maloney | Producer | 2005 | 1 | |
| Murakami, Hiroshi | Hiroshi Murakami | Actor | 1978 - 2013 | 16 | |
| Mota-Testrake, Zachary | Zachary Mota-Testrake | Actor | 2005 | 1 | |
| Miller Lindblom, Penelope | Penelope Miller Lindblom | Actor | 2005 | 2 | |
| Moreno, Missy | Missy Moreno | Actor | 2005 | 3 | |
| McCune, Jason | Jason McCune | Actor | 2005 | 4 | |
| Mayer, Steffi | Steffi Mayer | Designer | 2005 | 1 | |
| Markert, Joan | Joan Markert | Costume Designer | 2005 | 1 | |
| Macrin, Bujor | Bujor Macrin | Actor | 1995 - 2010 | 3 | |
| Mocanu, Emilia | Emilia Mocanu | Actor | 1995 - 2010 | 5 | |
| Moldoveanu, Dan | Dan Moldoveanu | Actor | 1995 - 2010 | 5 | |
| Marin, Ilona | Ilona Marin | Actor | 2010 | 2 | |
| Manokhin, Denis | Denis Manokhin | Actor | 2005 | 1 | |
| Meyer, Bettina | Bettina Meyer | Costume Designer, Designer | 2005 - 2012 | 3 | |
| Missbach, Klaus | Klaus Missbach | Dramaturg | 2005 - 2017 | 9 | |
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