| Maher, Matthew | Matthew Maher (Matthew Maher) | Actor | 2011 - 2020 | 2 | 2 |
| Matthíasson, Ari | Ari Matthíasson (Ari Matthíasson) | Actor | 1993 | 2 | |
| Müller, Eva Verena | Eva Verena Müller (Eva Verena Müller) | Actor | 2011 - 2012 | 2 | |
| Miller, Gordon | Gordon Miller (Gordon Miller) | Actor | 2011 | 2 | |
| McIntosh, Duncan | Duncan McIntosh (Duncan McIntosh) | Translator | 2011 | 2 | |
| McCluer, Carol | Carol McCluer (Carol McCluer) | Actor | 2001 - 2009 | 2 | |
| Melato, Mariangela | Mariangela Melato (Mariangela Melato) | Actor | 2011 | 2 | |
| Martinez, Derly | Derly Martinez (Derly Martinez) | Lighting Designer, Sound Designer | 1945 | 2 | |
| Mahmood, Barez Majeed | Barez Majeed Mahmood (Barez Majeed Mahmood) | Actor, Director | 2011 | 2 | |
| Main, Carolina | Carolina Main (Carolina Main) | Actor | 2010 - 2011 | 2 | |
| Massafra, Marco | Marco Massafra (Marco Massafra) | Actor | 2010 - 2022 | 2 | 1 |
| Merritt, Michael | Michael Merritt (Michael Merritt) | Designer | 1973 - 1991 | 2 | |
| Micheel, Gerd | Gerd Micheel (Gerd Micheel) | Actor | 1956 - 1958 | 2 | |
| Mellies, Wolfgang | Wolfgang Mellies (Wolfgang Mellies) | Actor | 1956 - 1958 | 2 | |
| Mellies, Eberhard | Eberhard Mellies (Eberhard Mellies) | Director | 1956 - 1958 | 2 | |
| Mauss, Brigitte | Brigitte Mauss (Brigitte Mauss) | Costume Designer | 1956 - 1958 | 2 | |
| Müller, Lia | Lia Müller (Lia Müller) | Actor | 2011 | 2 | |
| Makhdoomi, Roham | Roham Makhdoomi (Roham Makhdoomi) | Actor, Director | 2006 | 2 | |
| Mohebbi, Nima | Nima Mohebbi (Nima Mohebbi) | Actor | 2011 | 2 | |
| Monsen, Sophie | Sophie Monsen (Sophie Monsen) | Actor | 1861 - 1862 | 2 | |
| Möller, - | - Möller (- Möller) | Actor | 1856 | 2 | |
| Midling, Julius | Julius Midling (Julius Midling) | Actor | 1864 - 1866 | 2 | |
| Mantzius, Kristian | Kristian Mantzius (Kristian Mantzius) | Actor | 1870 | 2 | 1 |
| Meier, Emma | Emma Meier (Emma Meier) | Actor | 1872 | 2 | |
| Meves, Ernst Wilhelm | Ernst Wilhelm Meves (Ernst Wilhelm Meves) | Actor | 1878 - 1895 | 2 | |
| Martinsson, Herman | Herman Martinsson (Herman Martinsson) | Actor | 1878 | 2 | |
| Morgenweg, Ludwig | Ludwig Morgenweg (Ludwig Morgenweg) | Actor | 1878 | 2 | |
| Malmgren, Sigismund | Sigismund Malmgren (Sigismund Malmgren) | Actor | 1882 - 1883 | 2 | |
| Møller, Emil | Emil Møller (Emil Møller) | Actor | 1885 | 2 | |
| Martorel, Anna | Anna Martorel (Anna Martorel) | Actor | 1888 - 1889 | 2 | |
| Marschall, Mr. | Mr. Marschall (Mr. Marschall) | Actor | 1888 | 2 | |
| Minow, Johanna | Johanna Minow (Johanna Minow) | Actor | 1890 - 1891 | 2 | |
| Martinelli, Ludwig | Ludwig Martinelli (Ludwig Martinelli) | Actor | 1891 | 2 | |
| Meuris, - | - Meuris (- Meuris) | Actor | 1891 - 1892 | 2 | |
| Müller, Kleine | Kleine Müller (Kleine Müller) | Actor | 1891 - 1894 | 2 | |
| Modzelewski, Stanisław | Stanisław Modzelewski (Stanisław Modzelewski) | Actor | 1891 - 1912 | 2 | |
| Müller, Adam | Adam Müller (Adam Müller) | Actor | 1891 - 1902 | 2 | |
| Margreiter, Fr. | Fr. Margreiter (Fr. Margreiter) | Actor | 1892 | 2 | |
| Montrezza, C. | C. Montrezza (C. Montrezza) | Actor | 1893 | 2 | |
| Michelfelder, Anna | Anna Michelfelder (Anna Michelfelder) | Actor | 1894 | 2 | |
| Martin, Mr. | Mr. Martin (Mr. Martin) | Actor | 1895 - 1908 | 2 | |
| Menke, Konrad | Konrad Menke (Konrad Menke) | Actor | 1895 - 1923 | 2 | |
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