| Moore, Richard | Richard Moore | Lighting Designer | 1981 | 1 | 1 |
| Maraden, Frank | Frank Maraden | Actor | 1981 | 1 | 1 |
| Murray, David | David Murray | Actor | 1981 | 1 | 1 |
| Miner, Jan | Jan Miner | Actor | 1981 | 1 | 1 |
| Melander, Tomas | Tomas Melander | Adaptation, Director, Dramaturg | 1984 | 6 | 1 |
| Moeremans, Sarah | Sarah Moeremans | Director | 2013 - 2023 | 32 | 1 |
| Malzacher, Dieter | Dieter Malzacher | Actor, Adaptation | 1993 | 2 | 1 |
| McDermott, Carolyn | Carolyn McDermott | Actor | 1993 | 1 | 1 |
| Malartre, Jean-Baptiste | Jean-Baptiste Malartre | Actor | 1993 | 1 | 1 |
| McKeon, Belinda | Belinda McKeon | Adaptation | 2017 | 1 | 1 |
| Millhagen, Livia | Livia Millhagen | Actor | 2014 - 2024 | 3 | 1 |
| Marie, Gabriel | Gabriel Marie | Conductor | 1896 | 1 | 1 |
| Mehmedbašić, Zeina | Zeina Mehmedbašić | Translator | 1983 - 2011 | 4 | 1 |
| Martínez Sierra, María | María Martínez Sierra | Adaptation, Translator | 1917 - 1930 | 22 | 1 |
| Malara, Francesca | Francesca Malara | Assistant Director, Director | 2018 - 2019 | 2 | 1 |
| Müller, Friedrich | Friedrich Müller | | | | 1 |
| Mendy, Carlos | Carlos Mendy | Actor | 1961 - 1966 | 2 | 1 |
| Marnie, Marc | Marc Marnie | | | | 1 |
| Mjelstad, Kaja | Kaja Mjelstad | | | | 1 |
| Milde, Ingrid | Ingrid Milde | | | | 1 |
| Meek, Anne | Anne Meek | | | | 1 |
| Michaelsen, Ida, Marie | Ida Marie Michaelsen | | | | 1 |
| Moschos, Yannis | Yannis Moschos | | | | 1 |
| Mannheim, Lucie | Lucie Mannheim | Actor, Producer | 1928 - 1948 | 5 | 2 |
| Marquard-Olsen, Urania | Urania Marquard-Olsen | Actor | 1883 - 1924 | 64 | 2 |
| Matschuck, Rainer | Rainer Matschuck | Actor | 1973 - 2011 | 4 | 2 |
| McTeer, Janet | Janet McTeer | Actor | 1996 - 1997 | 3 | 2 |
| Mislin, Marcus | Marcus Mislin | Actor, Director | 1987 - 2013 | 7 | 2 |
| Modrzejewska, Helena | Helena Modrzejewska | Actor | 1882 - 1885 | 2 | 2 |
| Molander, Harald | Harald Molander | Actor, Director, Translator | 1885 - 1944 | 48 | 2 |
| Müller, Ludvig | Ludvig Müller | Actor, Director | 1897 - 1913 | 19 | 2 |
| Mærli, Terje | Terje Mærli | Adaptation, Director, Producer | 1973 - 2007 | 221 | 2 |
| Meløy, Marianne | Marianne Meløy | Actor | 1994 - 2010 | 2 | 2 |
| McKinven, Neil | Neil McKinven | Actor | 2010 - 2021 | 6 | 2 |
| Mantzius, Kristian | Kristian Mantzius | Actor | 1870 | 2 | 2 |
| Mitterwurzer, Friedrich | Friedrich Mitterwurzer | Actor | 1876 - 1897 | 12 | 2 |
| Marx, Carl | Carl Marx | Actor | 1883 - 1926 | 12 | 2 |
| Munch, Edvard | Edvard Munch | Designer | 1906 - 1966 | 9 | 2 |
| Moslet, Bibbi | Bibbi Moslet | Adaptation, Dramaturg | 2003 - 2013 | 137 | 2 |
| Mørk-Eidem, Alexander | Alexander Mørk-Eidem | Actor, Adaptation, Designer, Director | 1991 - 2016 | 32 | 2 |
| Mærli, Ragnhild | Ragnhild Mærli | Adaptation, Dramaturg | 1994 - 2008 | 19 | 2 |
| Maurstad, Mari | Mari Maurstad | Actor | 1985 - 2019 | 103 | 2 |
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