| Maria, Lucia | Lucia Maria | Actor | 2007 – 2008 | 6 | 1 |
| Mark, Jan, | Jan Mark | Adaptation, Dramaturg | 2002 – 2003 | 6 | |
| McArthur, Molly, | Molly McArthur | Actor, Costume Designer, Designer | 1925 – 1928 | 6 | |
| McArthur, Murray | Murray McArthur | Actor | 1996 – 1998 | 6 | |
| McCarthy, Helena | Helena McCarthy | Actor | 1994 | 6 | |
| McTeer, Janet | Janet McTeer | Actor | 1996 – 1997 | 6 | 2 |
| Melander, Björn, | Björn Melander | Adaptation, Director | 1999 – 2008 | 6 | |
| Melichar, Rudolf, | Rudolf Melichar | Actor | 1957 – 2010 | 6 | |
| Meyer, Jean, | Jean Meyer | Actor, Adaptation, Director | 1976 – 1984 | 6 | |
| Murakami, Miyuki | Miyuki Murakami | Lighting Designer | 2007 – 2009 | 6 | |
| Murrell, John, | John Murrell | Adaptation, Translator | 1983 – 2007 | 6 | |
| Mezzera, Franco, | Franco Mezzera | Actor | 1972 – 1974 | 6 | |
| Maché, Katinka | Katinka Maché | Actor | 2010 | 6 | 1 |
| McLaren, Robert | Robert McLaren | Director, Lighting Designer | 2006 | 6 | |
| Mallet, Miki | Miki Mallet | Actor | 2010 | 6 | |
| Mosleh, Fatma | Fatma Mosleh | Actor | 2009 – 2010 | 6 | |
| Müller-Rudolph, Minna, | Minna Müller-Rudolph | Actor | 1891 – 1892 | 6 | |
| Møller, Frk., | Frk. Møller | Actor | 1871 | 6 | |
| Møller, O., | O. Møller | Actor | 1871 | 6 | |
| Meyer, Adolf, | Adolf Meyer | Actor | 1879 | 6 | |
| Menicke, Albrecht, | Albrecht Menicke | Actor | 1888 – 1891 | 6 | |
| Mannert, Theodor, | Theodor Mannert | Actor | 1888 – 1891 | 6 | |
| Morgenstern, W., | W. Morgenstern | Actor | 1888 – 1891 | 6 | |
| Meissner, Hjalmar, | Hjalmar Meissner | Composer, Conductor, Musical Director | 1889 – 1903 | 6 | |
| Magnusson, Julia, | Julia Magnusson | Actor | 1892 – 1898 | 6 | |
| Mori, De, C., | C. De Mori | Actor | 1894 – 1919 | 6 | |
| Mayer, Albert, | Albert Mayer | Actor | 1896 – 1903 | 6 | |
| Mauth, Karl, | Karl Mauth | Actor, Director | 1903 | 6 | |
| Müller, Alex, | Alex Müller | Actor | 1905 – 1909 | 6 | |
| Möller, Alfred, | Alfred Möller | Actor | 1908 – 1914 | 6 | |
| Manz, Adolf, | Adolf Manz | Actor | 1914 – 1932 | 6 | |
| Müller, Renate, | Renate Müller | Actor, Costume Designer | 1925 | 6 | |
| Metternich, Matthias, | Matthias Metternich | Actor | 1905 – 1916 | 6 | |
| Mendler, Alfred, | Alfred Mendler | Actor | 1937 | 6 | |
| Maurer, Friedrich, | Friedrich Maurer | Actor | 1939 | 6 | |
| Møller, Mimi, | Mimi Møller | Actor | 1901 | 6 | |
| Malmgreen, Olaf, | Olaf Malmgreen | Actor | 1901 | 6 | |
| Merhaut, Vladimír, | Vladimír Merhaut | Actor | 1912 – 1923 | 6 | |
| Moser, Emil, | Emil Moser | Actor | 1906 | 6 | |
| Magnus, Cecil, | Cecil Magnus | Actor | 1906 | 6 | |
| Mendelssohn, Gordon, | Gordon Mendelssohn | Actor | 1906 | 6 | |
| Malmberg, Erik, | Erik Malmberg | Actor | 1907 – 1908 | 6 | |
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