| Martín, Ángeles | Ángeles Martín | Actor | 2001 | 5 | |
| Morón, Manuel | Manuel Morón | Actor | 2001 | 5 | |
| Mazzinghi, Bernard | Bernard Mazzinghi | Actor | 2009 - 2010 | 5 | |
| McCann, Christopher | Christopher McCann | Actor | 1984 - 2001 | 5 | 1 |
| Müller, Moritz | Moritz Müller | Designer | 2012 - 2016 | 5 | 1 |
| McSeveney, David | David McSeveney | Sound Designer | 2012 - 2016 | 5 | |
| Martin, Caroline | Caroline Martin | Actor | 2012 - 2016 | 5 | 1 |
| Markovich, Terrence | Terrence Markovich | Actor | 1984 | 5 | |
| McCardie, Brian | Brian McCardie | Actor | 2013 - 2015 | 5 | 1 |
| Münzer, Florian | Florian Münzer | Actor | 1985 | 5 | |
| Mannoni, Paola | Paola Mannoni | Actor | 1960 - 1986 | 5 | |
| Mark, James | James Mark | Director | 1967 - 2006 | 5 | |
| Malzacher, Gunther | Gunther Malzacher | Actor | 1962 - 1988 | 5 | |
| Mílová, Jaromíra | Jaromíra Mílová | Actor | 1991 - 1997 | 5 | 1 |
| Mackey, Nancy | Nancy Mackey | Actor | 1990 | 5 | |
| Markovics, Karl | Karl Markovics | Actor | 1988 | 5 | |
| Müllner, Wolfgang | Wolfgang Müllner | Actor | 1988 | 5 | |
| Mühle, Örjan | Örjan Mühle | Mask Maker | 1991 - 1993 | 5 | |
| Martinu, Bohuslav | Bohuslav Martinu | Composer | 1991 - 1993 | 5 | |
| Marzot, Vera | Vera Marzot | Costume Designer | 1977 - 1982 | 5 | |
| Maxim, Dorina | Dorina Maxim | Dancer | 1994 | 5 | |
| MacNaughtan, Alan | Alan MacNaughtan | Actor | 1948 - 1991 | 5 | |
| Müller-Merten, Heike | Heike Müller-Merten | Dramaturg | 1993 - 2006 | 5 | 1 |
| Müller-Elmau, Markwart | Markwart Müller-Elmau | Actor | 1994 - 2017 | 5 | |
| Mißbach, Klaus | Klaus Mißbach | Dramaturg, Translator | 1994 - 2004 | 5 | |
| Michel, Ingulf | Ingulf Michel | Actor | 1980 - 2002 | 5 | |
| Manville, Lesley | Lesley Manville | Actor | 2005 - 2015 | 5 | 1 |
| Mikiver, Tõnu | Tõnu Mikiver | Actor | 1978 - 1997 | 5 | |
| Mieroph, Gilbert | Gilbert Mieroph | Actor | 1996 - 2010 | 5 | 5 |
| Marx, Cornelia | Cornelia Marx | Actor | 1996 | 5 | |
| McKenzie, Matt | Matt McKenzie | Sound Designer | 1995 - 1996 | 5 | |
| Masson, Daniel | Daniel Masson | Actor | 2005 | 5 | |
| Mader, Sabine | Sabine Mader | Costume Designer, Designer | 2000 - 2017 | 5 | |
| Martin, Nicholas | Nicholas Martin | Actor, Director | 1967 - 2001 | 5 | 1 |
| Maddigan, Angie | Angie Maddigan | Actor | 2004 - 2005 | 5 | |
| Marin, Georg | Georg Marin | Actor | 1989 | 5 | |
| Monteiro, Tobias | Tobias Monteiro | Actor | 2002 | 5 | |
| Maddox, Chris Erric | Chris Erric Maddox | Actor | 2002 | 5 | |
| Møller, Stian | Stian Møller | Actor | 2015 | 5 | |
| Moore, Margaret | Margaret Moore | Actor | 2003 | 5 | |
| Meriwether, Liz | Elizabeth Meriwether | Actor, Adaptation, Playwright | 2003 - 2024 | 5 | 1 |
| Møller, Erik | Erik Møller | Actor | 2015 | 5 | |
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