| Mitrović, Hela | Hela Mitrović | Actor | 1917 | 1 | |
| Mađarić, Đuro | Đuro Mađarić | Actor | 1917 | 1 | |
| Muršić, Marija | Marija Muršić | Actor | 1917 | 1 | |
| Magnusson, Charles | Charles Magnusson | Producer | 1917 | 1 | |
| Martin-Bahn, Roma | Roma Martin-Bahn (Roma Martin-Bahn) | Actor | 1917 - 1918 | 2 | |
| MacCormack, Katherine | Katherine MacCormack | Actor | 1917 - 1918 | 2 | |
| Malmlöf, Eric | Eric Malmlöf (Eric Malmlöf) | Actor | 1917 - 1919 | 2 | |
| Moderow, Wilhelmine | Wilhelmine Moderow (Wilhelmine Moderow) | Actor | 1917 - 1922 | 4 | |
| Marx, Anna | Anna Marx (Anna Marx) | Actor | 1917 - 1922 | 2 | |
| Mansfield, Alice | Alice Mansfield (Alice Mansfield) | Actor | 1917 - 1926 | 2 | |
| Mederow, Paul | Paul Mederow (Paul Mederow) | Actor | 1917 - 1928 | 2 | |
| Melow, Albert | Albert Melow (Albert Melow) | Actor | 1917 - 1928 | 5 | |
| Middelboe, Ingeborg | Ingeborg Middelboe (Ingeborg Middelboe) | Actor | 1917 - 1928 | 2 | |
| Martínez Sierra, María | María Martínez Sierra | Adaptation, Translator | 1917 - 1930 | 22 | |
| Martens, Ernst | Ernst Martens (Ernst Martens) | Actor | 1917 - 1938 | 4 | |
| Malberg, Henrik | Henrik Malberg (Henrik Malberg) | Actor | 1917 - 1948 | 4 | |
| Molnár, Rózsi V. | Rózsi V. Molnár (Rózsi V. Molnár) | Actor | 1918 | 1 | |
| Melcher, Otto | Otto Melcher (Otto Melcher) | Actor | 1918 | 1 | |
| Michl, Frieda | Frieda Michl (Frieda Michl) | Actor | 1918 | 1 | |
| Maack, Frk. | Frk. Maack (Frk. Maack) | Actor | 1918 | 5 | |
| Maack, Mr. | Mr. Maack (Mr. Maack) | Actor | 1918 | 1 | |
| Maack, Fr. | Fr. Maack (Fr. Maack) | Actor | 1918 | 1 | |
| Maukwitz, Otto | Otto Maukwitz (Otto Maukwitz) | Actor | 1918 | 1 | |
| Müller, Condi | Condi Müller (Condi Müller) | Actor | 1918 | 1 | |
| Mroczkowski, (?) | (?) Mroczkowski ((?) Mroczkowski) | Actor | 1918 | 1 | |
| Mirecka, E. | E. Mirecka (E. Mirecka) | Actor | 1918 | 1 | |
| Mac, Nila | Nila Mac (Nila Mac) | Actor | 1918 | 1 | |
| Murata, Minoru | Minoru Murata (Minoru Murata) | Actor | 1918 | 1 | |
| Moraïtis, Nikos | Nikos Moraïtis (Nikos Moraïtis) | Actor | 1918 | 1 | |
| Mangan, Conal | Conal Mangan | Actor | 1918 | 1 | |
| MacDonagh, John | John MacDonagh | Actor | 1918 | 1 | |
| Massingham, Dorothy | Dorothy Massingham | Actor | 1918 | 1 | |
| Maigne, Charles | Charles Maigne | Adaptation | 1918 | 1 | |
| Maihoff, Lotte | Lotte Maihoff | Actor | 1918 | 1 | |
| Mendelevic, I. | I. Mendelevic | Designer | 1918 | 1 | |
| Mechi-Gracci, Emilia | Emilia Mechi-Gracci | Actor | 1918 | 1 | |
| Moltini, Cesare | Cesare Moltini | Actor | 1918 | 1 | |
| Merz, ? | ? Merz (? Merz) | Actor | 1918 - 1919 | 2 | |
| Menzel, Arthur | Arthur Menzel (Arthur Menzel) | Actor | 1918 - 1923 | 2 | |
| Mundet, Agustín | Agustín Mundet | Translator | 1918 - 1925 | 7 | |
| Mörike, Annemarie | Annemarie Mörike (Annemarie Mörike) | Actor | 1918 - 1937 | 3 | |
| Mārsietis, Jānis | Jānis Mārsietis (Jānis Mārsietis) | Actor | 1918 - 1939 | 8 | |
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