| Milutinović, Dobrica | Dobrica Milutinović | Actor | 1922 | 1 | |
| Mari, Sergio | Sergio Mari | Actor | 1922 | 1 | |
| Marsal, Mrs. | Mrs. Marsal | Actor | 1922 | 1 | |
| Molander, Olof | Olof Molander | Adaptation, Director, Translator | 1921 - 1979 | 5 | 1 |
| Methling, Svend | Svend Methling | Actor, Adaptation, Designer, Director | 1921 - 1964 | 9 | 1 |
| Medenwaldt, Immanuel | Immanuel Medenwaldt | Actor | 1921 - 1934 | 5 | |
| Müller, Paul | Paul Müller | Actor | 1921 - 1928 | 10 | 1 |
| Melchinger, Alfons | Alfons Melchinger | Actor, Director | 1921 - 1927 | 3 | |
| Maraval, - | - Maraval | Actor | 1921 - 1926 | 3 | |
| Molander, Gustaf | Gustaf Molander | Actor | 1921 - 1925 | 2 | 1 |
| Mizutani, Yaeko | Yaeko Mizutani | Actor | 1921 - 1924 | 3 | |
| Muscan, M. | M. Muscan | Actor | 1921 - 1923 | 3 | |
| Morgen, Maria | Maria Morgen | Actor | 1921 | 1 | |
| McEntee, Frank | Frank McEntee | Actor, Director | 1921 | 2 | |
| Markstein, Grete | Grete Markstein | Actor | 1921 | 1 | |
| Morgen, Josefa | Josefa Morgen | Actor | 1921 | 1 | |
| Menzinger, Anton | Anton Menzinger | Actor | 1921 | 1 | |
| Martens, Alma | Alma Martens | Actor | 1921 | 1 | |
| Mirtsch, Senta | Senta Mirtsch | Actor | 1921 | 1 | |
| Manon, Ida | Ida Manon | Actor | 1921 | 1 | |
| Marchand, Eugen | Eugen Marchand | Actor | 1921 | 1 | |
| Marstrand, Günther | Günther Marstrand | Actor | 1921 | 1 | |
| Messiter, Eric | Eric Messiter | Actor | 1921 | 1 | |
| Myron, J. | J. Myron | Director | 1921 | 1 | |
| Maybury, Edgar | Edgar Maybury | Designer | 1921 | 1 | |
| McCreery, Helen | Helen McCreery | Actor | 1921 | 1 | |
| Manners, T., P. | T. P. Manners | Actor | 1921 | 1 | |
| Mača, Alma | Alma Mača | Actor | 1921 | 1 | |
| Muncis, Jānis | Jānis Muncis | Designer | 1921 | 1 | |
| Mačs, Emils | Emils Mačs | Actor | 1921 | 3 | |
| Marseets, Jānis | Jānis Marseets | Actor | 1921 | 5 | |
| Mitrevics, Augusts | Augusts Mitrevics | Actor | 1921 | 2 | |
| Mann, Max | Max Mann | Actor | 1921 | 1 | |
| Molenaar, Herbert | Herbert Molenaar | Actor | 1921 | 1 | |
| Malenowska, Maria | Maria Malenowska | Actor | 1921 | 2 | |
| Manoliu, Z. | Z. Manoliu | Actor | 1921 | 1 | |
| Miliander, Sven | Sven Miliander | Actor | 1920 - 1952 | 6 | 1 |
| Maierhofer, Ferdinand | Ferdinand Maierhofer | Actor | 1920 - 1946 | 5 | |
| Macri-Eftimiu, Agepsina | Agepsina Macri-Eftimiu | Actor | 1920 - 1941 | 12 | |
| Mihail Dragomirescu, Laura | Laura Mihail Dragomirescu | Translator | 1920 - 1935 | 6 | |
| Mărculescu, Grigore | Grigore Mărculescu | Actor | 1920 - 1932 | 4 | |
| Moncza, Hermann | Hermann Moncza | Actor | 1920 - 1925 | 3 | |
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