| Maestri, Elisa | Elisa Maestri | Actor | 2022 - 2024 | 2 | |
| Martinez, Carla | Carla Martinez | Designer | 2022 | 2 | |
| Mata, José | José Mata | Actor | 2022 | 2 | |
| Michaelian, Eric | Eric Michaelian | Actor | 2022 | 2 | |
| Morrison, Julie | Julie Morrison | Actor | 2022 | 2 | |
| Mena, Carlota de | Carlota de Mena | Actor | 1893 - 1900 | 2 | |
| Marquerie, Alfredo | Alfredo Marquerie | Adaptation | 1963 | 2 | |
| Muñoz, Amelia | Amelia Muñoz | Actor | 1963 | 2 | |
| Manev, Martin | Martin Manev (Мартин Манев) | Actor, Set Designer | 2012 - 2020 | 2 | |
| Montenegro, Ángela | Ángela Montenegro | Actor | 1974 - 1978 | 2 | |
| Mota, Jimena la | Jimena la Mota | Actor | 2015 | 2 | |
| Mayo, Anna | Anna Mayo | Actor | 2015 | 2 | |
| Márquez, Iria | Iria Márquez | Adaptation, Director | 2016 | 2 | |
| Martinoni, Giantonio | Giantonio Martinoni | Actor | 2022 | 2 | |
| Mastromonaco, Bianca | Bianca Mastromonaco | Actor | 2022 | 2 | |
| Muro, Pilar S. | Pilar S. Muro | Costume Designer | 1968 - 1969 | 2 | |
| Milčev, Michail | Michail Milčev (Михаил Милчев) | Actor | 2022 - 2023 | 2 | |
| Moragas, Miquel | Miquel Moragas | Set Designer | 1903 - 1906 | 2 | |
| Mentes, Júlia | Júlia Mentes | Actor | 2023 | 2 | |
| Mete, Gökhan | Gökhan Mete | Actor | 2023 | 2 | |
| Meyer, Anne-Claire | Anne-Claire Meyer | Designer | 2023 | 2 | |
| Mihan, Jörg | Jörg Mihan | Dramaturg | 2023 | 2 | |
| Meyer, Moritz | Moritz Meyer | Lighting Designer | 2023 | 2 | |
| McLeod, Kenn | Kenn McLeod | Lighting Designer, Sound Designer | 2023 | 2 | |
| Moriyama, Fuyuko | Fuyuko Moriyama (森山冬子) | Actor | 2023 | 2 | |
| Morita, Honoka | Honoka Morita (盛田穂乃歌) | Lighting Designer | 2023 | 2 | |
| Moumoulidou, Elpida | Elpida Moumoulidou (Ελπίδα Μουμουλίδου) | Photographer | 2023 | 2 | |
| Mercurian, Chris Simion | Chris Simion Mercurian | Adaptation, Director | 2024 | 2 | |
| Mangina, Stephen | Stephen Mangina | Actor | 2020 | 2 | |
| Moreira, Ana | Ana Moreira | Actor | 2020 | 2 | |
| Magnussen, Vidar | Vidar Magnussen | Actor, Director | 2024 | 2 | |
| Marchetti, Renato | Renato Marchetti | Actor | 2014 | 2 | |
| Magni, Eva | Eva Magni | Actor | 1948 - 1949 | 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 | |
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