| Miletić, Jelena | Jelena Miletić | Costume Designer, Designer | 2014 - 2022 | 5 | |
| Montes, Manuel Reyes | Manuel Reyes Montes | Actor | 2016 - 2017 | 5 | |
| Moreno, Emanuel | Emanuel Moreno | Actor, Musician | 2016 - 2017 | 5 | |
| Malahide, Patrick | Patrick Malahide (Patrick Malahide) | Actor | 1992 - 1994 | 4 | |
| Ming, Gu | Gu Ming (Gu Ming) | Designer | 1998 - 2006 | 4 | |
| Maalismaa, Markku | Markku Maalismaa (Markku Maalismaa) | Actor | 1985 - 2005 | 4 | |
| Maeder, Stéphane | Stéphane Maeder (Stéphane Maeder) | Actor | 1996 - 2004 | 4 | |
| Makwarth, Miskow | Miskow Makwarth (Miskow Makwarth) | Actor, Director | 1941 - 1944 | 4 | |
| Malherbe, Jan | Jan Malherbe (Jan Malherbe) | Actor | 1889 - 1894 | 4 | |
| Maniu, Adrian | Adrian Maniu (Adrian Maniu) | Translator | 1959 - 1994 | 4 | |
| Mann, Emily | Emily Mann (Emily Mann) | Actor, Director | 1979 - 1996 | 4 | |
| Markkanen, Soili | Soili Markkanen (Soili Markkanen) | Actor | 1967 - 2012 | 4 | |
| Maruyama, Sadao | Sadao Maruyama (Sadao Maruyama) | Actor, Director | 1925 - 1936 | 4 | |
| März, Daniela | Daniela März (Daniela März) | Actor | 2001 - 2002 | 4 | |
| Marzi, Davide | Davide Marzi (Davide Marzi) | Actor | 1999 - 2000 | 4 | |
| Matschuck, Rainer | Rainer Matschuck (Rainer Matschuck) | Actor | 1973 - 2011 | 4 | 2 |
| Matsui, Suma | Suma Matsui (Suma Matsui) | Actor | 1911 - 1912 | 4 | |
| Matzen, Volkert | Volkert Matzen (Volkert Matzen) | Actor | 1985 - 1997 | 4 | |
| Mauer, Lubo | Lubo Mauer (Lubo Mauer) | Producer, Translator | 1975 - 1976 | 4 | |
| Mayer, Agda | Agda Mayer (Agda Mayer) | Actor | 1878 - 1887 | 4 | |
| McClure, Keven | Keven McClure (Keven McClure) | Actor | 1944 - 1945 | 4 | |
| McKintosh, Peter | Peter McKintosh (Peter McKintosh) | Designer | 2003 - 2007 | 4 | |
| Meixner, Karl | Karl Meixner (Karl Meixner) | Actor | 1928 - 1975 | 4 | |
| Melbourne, Dale | Dale Melbourne (Dale Melbourne) | Actor | 1944 - 1945 | 4 | |
| Meraj, Salim | Salim Meraj (Salim Meraj) | Actor | 2006 - 2012 | 4 | |
| Messana, Maurizio | Maurizio Messana (Maurizio Messana) | Adaptation, Director | 1996 | 4 | |
| Mete, Marco | Marco Mete (Marco Mete) | Actor | 1999 - 2000 | 4 | |
| Meyer, Hartmut | Hartmut Meyer (Hartmut Meyer) | Designer | 1985 - 1994 | 4 | |
| Mezzanotte, Luigi | Luigi Mezzanotte (Luigi Mezzanotte) | Actor | 1975 - 1993 | 4 | |
| Mihályfi, Károly | Károly Mihályfi (Károly Mihályfi) | Actor | 1914 - 1927 | 4 | |
| Miller, Manfred | Manfred Miller (Manfred Miller) | Designer | 1947 - 1963 | 4 | |
| Milotová, Bárbora | Bárbora Milotová (Bárbora Milotová) | Actor | 2004 - 2005 | 4 | |
| Miura, Chieko | Chieko Miura (Chieko Miura) | Actor | 1999 - 2002 | 4 | |
| Mladeck, Kyra | Kyra Mladeck (Kyra Mladeck) | Actor | 1971 - 2003 | 4 | |
| Modugno, Lodovica | Lodovica Modugno (Lodovica Modugno) | Actor | 1969 - 1974 | 4 | |
| Mori, Eijiro | Eijiro Mori (Eijiro Mori) | Actor | 1911 - 1912 | 4 | |
| Moszkowicz, Imo | Imo Moszkowicz (Imo Moszkowicz) | Director | 1964 - 1965 | 4 | |
| Mufti, Uns | Uns Mufti (Uns Mufti) | Composer | 2006 - 2012 | 4 | |
| Muller, Myriam | Myriam Muller (Myriam Muller) | Actor | 2000 - 2020 | 4 | |
| Müller, Elisabeth | Elisabeth Müller (Elisabeth Müller) | Actor | 1946 - 1975 | 4 | |
| Müller, Erna | Erna Müller (Erna Müller) | Actor | 1894 - 1904 | 4 | |
| Müller, Hilde | Hilde Müller (Hilde Müller) | Actor | 1909 - 1927 | 4 | |
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