| Masserano Taricco, Pietro | Pietro Masserano Taricco | Director | 1956 - 1962 | 2 | |
| Meriç, Bahar | Bahar Meriç | Choreographer | 2024 | 2 | |
| Mulinacci, Thomas | Thomas Mulinacci | Composer | 2015 | 2 | |
| Magazzini, Filippo | Filippo Magazzini | Actor | 2006 | 2 | |
| Monizza, Selene | Selene Monizza | Actor | 2022 | 2 | |
| Mignemi, Leo | Leo Mignemi | Actor | 2012 | 2 | |
| Mirmina, Viola | Viola Mirmina | Actor | 2012 | 2 | |
| Margowski, Andrzej | Andrzej Margowski | Designer, Director | 2019 | 2 | |
| Mengani, Ubaldo | Ubaldo Mengani | Actor | 2016 | 2 | |
| Mancaniello, Giuseppe | Giuseppe Mancaniello | Lighting Designer, Sound Designer | 2013 | 2 | |
| Marino, Elena R. | Elena R. Marino | Director | 2017 | 2 | |
| Menghini, Paolo | Paolo Menghini | Actor | 2017 | 2 | |
| Moberg, Vilde | Vilde Moberg | Actor | 2024 | 2 | |
| Michelsen, Anna | Anna Michelsen | Actor | 1880 - 1882 | 3 | |
| Mihályfi, Béla | Béla Mihályfi | Actor | 1928 - 1932 | 3 | |
| Manz, Andreas | Andreas Manz | Actor, Director | 2007 - 2009 | 3 | 1 |
| Malcolm, Roy | Roy Malcolm | Actor | 1926 - 1930 | 3 | |
| Manasiev, Plamen | Plamen Manasiev (Пламен Манасиев) | Actor | 2001 - 2023 | 3 | |
| Margulies, Pär | Pär Margulies | Actor | 1985 - 1990 | 3 | 1 |
| Martin, Gundula | Gundula Martin | Costume Designer, Designer | 1987 - 2014 | 3 | |
| Martin, Klaus | Klaus Martin | Actor, Lighting Designer, Sound Designer | 1986 - 1999 | 3 | |
| Maslon, Laurence | Laurence Maslon | Dramaturg | 1985 - 1995 | 3 | |
| Mason, Dan | Dan Mason | Actor | 1996 - 2013 | 3 | 1 |
| Matveeva, Svetlana | Svetlana Matveeva | Actor, Costume Designer, Designer | 2001 | 3 | |
| Matysová, Milada | Milada Matysová | Actor | 1939 - 1954 | 3 | 1 |
| Matz, Katharina | Katharina Matz | Actor | 1956 - 1985 | 3 | |
| Mavromataki, Kelly | Kelly Mavromataki | Costume Designer | 2006 | 3 | |
| McCallum, Paul | Paul McCallum | Actor | 1970 | 3 | |
| McCoy, Michael | Michael McCoy | Sound Designer | 1992 | 3 | |
| McHallem, Christopher | Christopher McHallem | Actor | 1992 | 3 | 1 |
| McRae, Hilton | Hilton McRae | Actor | 1993 - 2003 | 3 | |
| McTeer, Janet | Janet McTeer | Actor | 1996 - 1997 | 3 | 2 |
| Medina, Estela | Estela Medina | Actor | 1954 - 1979 | 3 | |
| Mehring, Horst | Horst Mehring | Actor | 1971 - 1975 | 3 | |
| Melldahl, Åsa | Åsa Melldahl | Director | 2000 - 2007 | 3 | 1 |
| Mellor, Harold | Harold Mellor | Actor | 1963 - 1977 | 3 | |
| Meshulach, Rivka | Rivka Meshulach | Adaptation, Translator | 1999 - 2013 | 3 | 1 |
| Metcalfe, Edgar | Edgar Metcalfe | Director | 1970 | 3 | |
| Meunier, Enny | Enny Meunier | Actor | 1955 - 1977 | 3 | |
| Meyer, Wilhelm | Wilhelm Meyer | Actor | 1976 - 1980 | 3 | |
| Micińska, Magdalena | Magdalena Micińska | Actor | 1882 - 1908 | 3 | |
| Miles, Katrina | Katrina Miles | Actor | 2005 - 2006 | 3 | |
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