| Masé, Marino | Marino Masé | Actor | 1980 | 2 | |
| Merli, Adalberto Maria | Adalberto Maria Merli | Actor | 1962 - 1980 | 2 | |
| Morris, Aubrey | Aubrey Morris | Actor | 1972 | 2 | |
| Munro, Nan | Nan Munro | Actor | 1956 - 1957 | 2 | |
| Medford, Don | Don Medford | Director | 1954 - 1959 | 2 | |
| McCallum, Neil | Neil McCallum | Actor | 1955 - 1958 | 2 | |
| Moll, George B. | George B. Moll | Actor | 1941 | 2 | |
| Mildehav, Linn | Linn Mildehav | Actor | 2022 | 2 | |
| Marceau, Marianne | Marianne Marceau | Actor | 2022 | 2 | |
| McCoy, Kevin | Kevin McCoy | Actor | 2022 | 2 | |
| Marholia, Roman | Roman Marholia | Director, Dramaturg | | 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 | |
| McLeod, Kenn | Kenn McLeod | Lighting Designer, Sound Designer | 2023 | 2 | |
| Mikhalevsky, Taras | Taras Mikhalevsky (Тарас Михалевский) | Lighting Designer | 2021 - 2025 | 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 | |
| Matos, Marinel | Marinel Matos | Lighting Designer | 2023 - 2025 | 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 | |
| Madrid, Patricia | Patricia Madrid | Actor | 2024 | 2 | |
| Magnussen, Vidar | Vidar Magnussen | Actor, Director | 2024 | 2 | |
| Mirabella, Franco | Franco Mirabella | Actor | 2024 | 2 | |
| Montalto, Marcello | Marcello Montalto | Actor | 2024 | 2 | |
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