| McCauley, Peter | Peter McCauley | Actor | 1990 - 2019 | 10 | 1 |
| Matthes, Ulrich | Ulrich Matthes | Actor | 1989 - 1995 | 5 | 1 |
| Michael, Wolfgang | Wolfgang Michael | Actor | 1985 - 2013 | 6 | 1 |
| Mejzlík, Miloslav | Miloslav Mejzlík | Actor | 1990 - 2008 | 7 | 1 |
| Muinzer, Louis | Louis Muinzer | Director, Translator | 1983 - 1990 | 6 | 1 |
| McCusker, Stella | Stella McCusker | Actor | 1982 - 2003 | 4 | 1 |
| MacLiammóir, Micheál | Micheál MacLiammóir | Actor, Costume Designer, Designer | 1928 - 1955 | 20 | 1 |
| Moore, Mabel | Mabel Moore | Actor | 1927 - 1937 | 3 | 1 |
| Membrives, Lola | Lola Membrives | Actor | 1928 - 1929 | 9 | 1 |
| Matthews, Ann-Sara | Ann-Sara Matthews | Actor | 1979 | 1 | 1 |
| Moffatt, John | John Moffatt | Actor | 1970 | 2 | 1 |
| Mørk, Erik | Erik Mørk | Actor | 1951 - 2004 | 15 | 1 |
| Maxe, Göthe, Valter | Göthe Valter Maxe (Goethe Maxe) | Actor | 1970 - 1990 | 2 | 1 |
| Magris, Claudio | Claudio Magris | Translator | 1974 - 2020 | 19 | 1 |
| Marjanović, Iva | Iva Marjanović | Actor | 1977 | 1 | 1 |
| Moskovljević, Olga | Olga Moskovljević | Translator | 1967 - 2013 | 8 | 1 |
| McCalman, Macon | Macon McCalman | Actor | 1971 - 1973 | 5 | 1 |
| Mattes, Eva | Eva Mattes | Actor | 1973 - 1975 | 3 | 1 |
| Meisel, Kurt | Kurt Meisel | Actor | 1979 - 1993 | 2 | 1 |
| Mandel, Edgar | Edgar Mandel | Actor | 1967 - 1972 | 2 | 1 |
| Marshall, E.G. | E.G. Marshall | Actor | 1960 - 1980 | 3 | 1 |
| Mühe, Ulrich | Ulrich Mühe | Actor | 1979 - 2006 | 5 | 1 |
| Mathesius, Bohumil | Bohumil Mathesius | Adaptation, Translator | 1941 - 2007 | 23 | 1 |
| Morris, Peter | Peter Morris | Actor | 1961 - 1973 | 2 | 1 |
| Mason, Marshall W. | Marshall W. Mason | Director, Lighting Designer | 1964 - 1973 | 2 | 1 |
| Müller, Hans-Reinhard | Hans-Reinhard Müller | Actor, Director | 1975 - 1979 | 3 | 1 |
| Matisová, Gita | Gita Matisová | Costume Designer | 1973 | 1 | 1 |
| Marowitz, Charles | Charles Marowitz | Adaptation, Director | 1978 - 1990 | 12 | 1 |
| Mayer, Kit | Kit Mayer | Designer, Lighting Designer | 2006 - 2014 | 10 | 1 |
| Meyer-Fürst, Gustl | Gustl Meyer-Fürst | Actor | 1981 - 2007 | 6 | 1 |
| Meinhardt, Thomas | Thomas Meinhardt | Actor | 1981 - 2010 | 3 | 1 |
| Morahan, Christopher | Christopher Morahan | Director | 1958 - 1979 | 3 | 1 |
| Mikiver, Mikk | Mikk Mikiver | Actor, Director | 1962 - 1999 | 7 | 1 |
| Meinholtz, Rolland | Rolland Meinholtz | Director | 1972 | 1 | 1 |
| Morita, Sohei | Sohei Morita | Translator | 1913 - 1940 | 3 | 1 |
| Manninen, O. | Otto Manninen | Translator | 1916 - 1967 | 4 | 1 |
| Mikes, Lajos | Lajos Mikes | Translator | 1927 - 1944 | 4 | 1 |
| Miller, Martha | Martha Miller | Actor | 1983 | 1 | 1 |
| Martyn, Greg | Greg Martyn | Actor | 1983 | 2 | 1 |
| McCloskey, Steven | Steven McCloskey | Actor | 1983 | 6 | 1 |
| McRobbie, Peter | Peter McRobbie | Actor | 1966 - 1992 | 9 | 1 |
| Munzar, Ludĕk | Ludĕk Munzar | Actor | 1964 - 1994 | 11 | 1 |
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