| Murphy, John Daly | John Daly Murphy | Actor | 1900 - 1929 | 5 | |
| Marlow, Heinrich | Heinrich Marlow | Actor | 1900 - 1933 | 7 | |
| Massalitinov, N. | Nikolaj O. Massalitinov (N. Massalitinov) | Actor, Director | 1900 - 1939 | 10 | |
| Monti, Edith | Edith Monti | Actor | 1901 | 1 | |
| Maßberg, Hermann | Hermann Maßberg | Actor | 1901 | 1 | |
| Mäder, Marie | Marie Mäder | Actor | 1901 | 1 | |
| Micińska, Wanda | Wanda Micińska | Actor | 1901 | 1 | |
| Mandrovitsch, Adam | Adam Mandrovitsch | Director | 1901 | 1 | |
| Maltby, Charles | Charles Maltby | Actor | 1901 | 1 | |
| Marcus, Ethel | Ethel Marcus | Actor | 1901 | 1 | |
| Mihályfi, - | - Mihályfi | Actor | 1901 | 1 | |
| Møller, Mimi | Mimi Møller | Actor | 1901 | 6 | |
| Malmgreen, Olaf | Olaf Malmgreen | Actor | 1901 | 6 | |
| Mølbach, Christian | Christian Mølbach | Actor | 1901 | 1 | |
| Mietle, Benny | Benny Mietle | Actor | 1901 | 1 | |
| Morozowicz, Rufin(?) | Rufin(?) Morozowicz | Actor | 1901 | 1 | |
| Matuszewski, - | - Matuszewski | Actor | 1901 | 1 | |
| Morzkowski, - | - Morzkowski | Actor | 1901 | 1 | |
| Merito, Ada | Ada Merito | Actor | 1901 | 1 | |
| Marian, B. | B. Marian | Translator | 1901 | 2 | |
| Marion, Marianne | Marianne Marion | Actor | 1901 - 1902 | 8 | |
| Marko, (?) | (?) Marko | Actor | 1901 - 1903 | 2 | |
| Madsen, Anna | Anna Madsen | Actor | 1901 - 1904 | 2 | |
| Mischke, Hans | Hans Mischke | Actor | 1901 - 1905 | 2 | |
| Morgenstern, Gustav | Gustav Morgenstern | Translator | 1901 - 1906 | 3 | |
| Müller, Erwin | Erwin Müller | Actor | 1901 - 1909 | 4 | |
| Miarczyński, Włodzimierz | Włodzimierz Miarczyński | Actor | 1901 - 1912 | 5 | |
| Milbitz, Paula | Paula Milbitz | Actor | 1901 - 1915 | 2 | |
| Morel, Emma | Emma Morel | Actor | 1901 - 1916 | 2 | |
| Markellos, Spyros | Spyros Markellos | Translator | 1901 - 1918 | 18 | |
| Meinhard, Carl | Carl Meinhard | Actor, Director | 1901 - 1919 | 14 | |
| Müller, Kurt | Kurt Müller | Actor | 1901 - 1923 | 2 | |
| Myrat, Mitsos | Mitsos Myrat | Actor | 1901 - 1926 | 15 | |
| Martini, Ferdinand | Ferdinand Martini | Actor, Director | 1901 - 1927 | 4 | |
| Molander, Karin | Karin Molander | Actor | 1902 | 1 | |
| Moretti, Eleanor | Eleanor Moretti | Actor | 1902 | 1 | |
| Metz, Emma | Emma Metz | Actor | 1902 | 1 | |
| Muth, Mr. | Mr. Muth | Actor | 1902 | 1 | |
| Müller, Paula | Paula Müller | Actor | 1902 | 1 | |
| Mansfeld, Christine | Christine Mansfeld | Actor | 1902 | 1 | |
| Mentzl, P. | P. Mentzl | Actor | 1902 | 1 | |
| Merrild, Karl | Karl Merrild | Actor | 1902 | 1 | |
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