| Mason, John, | John Mason | Actor | 1904 | 1 | |
| Massen, Louis, | Louis Massen | Actor | 1904 | 1 | |
| Millward, Charles, | Charles Millward | Actor | 1904 | 1 | |
| Mijatev, Georgi, | Georgi Mijatev | Actor | 1903 - 1938 | 3 | |
| Martinelli, Anna | Anna Martinelli | Actor | 1903 - 1920 | 2 | |
| Müller, -, | - Müller | Actor | 1903 - 1918 | 4 | |
| Matejić, Milan | Milan Matejić | Actor | 1903 - 1918 | 3 | |
| Mauth, Karl, | Karl Mauth | Actor, Director | 1903 - 1917 | 6 | |
| Mazzini, Annunziata, | Annunziata Mazzini | Actor | 1903 - 1908 | 21 | |
| Mack, William B., | William B. Mack (William B. Mack) | Actor | 1903 - 1907 | 8 | |
| Mosnier, Charles, | Charles Mosnier | Actor | 1903 - 1907 | 3 | |
| Martyn, Edward, | Edward Martyn | Director | 1903 - 1904 | 2 | |
| Moore, George, | George Moore | Director | 1903 - 1904 | 2 | |
| Malten, Alexandrine, | Alexandrine Malten | Actor | 1903 | 3 | |
| Markowski, Feliks, | Feliks Markowski | Actor | 1903 | 1 | |
| Męczyńska, Maria (?), | Maria (?) Męczyńska | Actor | 1903 | 1 | |
| Meier, -, | - Meier | Actor | 1903 | 1 | |
| Molander, -, | - Molander | Actor | 1903 | 1 | |
| Marion, -, | - Marion | Actor | 1903 | 1 | |
| Matkowska, Wilhelmina Michlewicz, | Wilhelmina Michlewicz Matkowska | Actor | 1903 | 1 | |
| Marchetti, I., | I. Marchetti | Actor | 1903 | 1 | |
| Marchetti, F., | F. Marchetti | Actor | 1903 | 1 | |
| Müller, Else | Else Müller | Actor | 1903 | 1 | |
| McDonald, Flora | Flora McDonald | Actor | 1903 | 1 | |
| Malburg, Philipp | Philipp Malburg | Actor | 1903 | 1 | |
| Momuleanu, Eufrosina | Eufrosina Momuleanu | Actor | 1903 | 1 | |
| Mavrodi, Alexandru | Alexandru Mavrodi | Actor | 1903 | 1 | |
| Magnussøn, Sigurd, | Sigurd Magnussøn | Actor | 1902 - 2006 | 23 | |
| Mijatović, Pavle, | Pavle Mijatović | Translator | 1902 - 1928 | 4 | |
| McKinnel, Norman, | Norman McKinnel | Actor | 1902 - 1920 | 3 | |
| Marberg, Lili, | Lili Marberg | Actor | 1902 - 1918 | 2 | |
| Mandahl, Thor, | Thor Mandahl | Actor | 1902 - 1914 | 2 | |
| Miciński, Stanisław, | Stanisław Miciński | Actor | 1902 - 1912 | 3 | |
| Mantschev, Zvetan, | Zvetan Mantschev | Actor | 1902 - 1909 | 5 | |
| Maddern, Mary, | Mary Maddern | Actor | 1902 - 1908 | 10 | |
| Mandé, Rudolf, | Rudolf Mandé | Actor | 1902 - 1908 | 3 | |
| Mielnicki, Józef, | Józef Mielnicki | Actor | 1902 - 1908 | 2 | |
| Mrozowska, Jadwiga, | Jadwiga Mrozowska | Actor | 1902 - 1906 | 2 | |
| Meiers, Fricis, | Fricis Meiers | Actor | 1902 - 1903 | 2 | |
| Molander, Karin, | Karin Molander | Actor | 1902 | 1 | |
| Moretti, Eleanor, | Eleanor Moretti | Actor | 1902 | 1 | |
| Metz, Emma, | Emma Metz | Actor | 1902 | 1 | |
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