| Morgenstern, Holger | Holger Morgenstern (Holger Morgenstern) | Actor | 1995 | 2 | |
| Mori, Masao | Masao Mori (Masao Mori) | Actor | 1940 - 1946 | 2 | |
| Möring, Brigitte | Brigitte Möring (Brigitte Möring) | Actor | 1978 - 1981 | 2 | |
| Mortensen, Lia | Lia Mortensen (Lia Mortensen) | Actor | 2001 | 2 | |
| Mortensen, Marianne | Marianne Mortensen (Marianne Mortensen) | Actor | 1990 - 2002 | 2 | |
| Mühlhan, Margarethe | Margarethe Mühlhan (Margarethe Mühlhan) | Actor | 1946 - 1954 | 2 | |
| Muller, Mathieu | Mathieu Muller (Mathieu Muller) | Actor | 2000 - 2003 | 2 | |
| Müller, Carl | Carl Müller (Carl Müller) | Actor | 1961 - 1970 | 2 | |
| Müller, Jens | Jens Müller (Jens Müller) | Actor | 1993 | 2 | |
| Müller, Karl-Frank | Karl-Frank Müller (Karl-Frank Müller) | Actor | 1992 - 1999 | 2 | |
| Müller, Liselotte | Liselotte Müller (Liselotte Müller) | Actor | 1972 - 1980 | 2 | |
| Müller, Mounia | Mounia Müller (Mounia Müller) | Actor | 1993 | 2 | |
| Mumford, Stephanie | Stephanie Mumford (Stephanie Mumford) | Actor, Costume Designer | 2002 | 2 | |
| Murphy, Sean | Sean Murphy (Sean Murphy) | Actor | 1971 - 2011 | 2 | |
| Murray, Rupert | Rupert Murray (Rupert Murray) | Lighting Designer | 1984 - 1993 | 2 | |
| Musial, Magdalena | Magdalena Musial (Magdalena Musial) | Costume Designer, Designer | 2000 | 2 | |
| Mutalipassi, Loredana | Loredana Mutalipassi (Loredana Mutalipassi) | Lighting Designer, Sound Designer | 2006 | 2 | |
| Madsen, Frederik | Frederik Madsen (Frederik Madsen) | Actor | 1876 - 1880 | 2 | |
| Montarello, Jose | Jose Montarello (Jose Montarello) | Actor | 1986 | 2 | |
| Myers, Troy | Troy Myers (Troy Myers) | Actor | 2006 | 2 | |
| Moore, Eva Mae | Eva Mae Moore (Eva Mae Moore) | Actor | 1928 | 2 | |
| Mari, Febo | Febo Mari (Febo Mari) | Actor, Director | 1919 | 2 | |
| Mihályfi, Mihályfi | Mihályfi Mihályfi (Mihályfi Mihályfi) | Actor | 1889 - 1890 | 2 | |
| Morgen, Therese | Therese Morgen (Therese Morgen) | Actor | 1916 - 1921 | 2 | |
| Michels, Hans Herbert | Hans Herbert Michels (Hans Herbert Michels) | Actor | 1934 - 1958 | 2 | |
| Mabusenko, V. | V. Mabusenko (V. Mabusenko) | Designer | 1999 - 2000 | 2 | |
| Musina, O. | O. Musina (O. Musina) | Actor | 1999 - 2000 | 2 | |
| Markworth, Trevor | Trevor Markworth (Trevor Markworth) | Actor | 2000 - 2002 | 2 | |
| Malmierca, Álvaro | Álvaro Malmierca (Álvaro Malmierca) | Adaptation, Translator | 1999 | 2 | |
| Michałowski, Janusz | Janusz Michałowski (Janusz Michałowski) | Actor | 1994 | 2 | |
| Monaci, Maria Grazia | Maria Grazia Monaci (Maria Grazia Monaci) | Actor | 1955 - 1956 | 2 | |
| Mendizabal, Nelly | Nelly Mendizabal (Nelly Mendizabal) | Actor | 1954 - 1955 | 2 | |
| Martin, Thomas | Thomas Martin (Thomas Martin) | Actor | 1953 - 1992 | 2 | |
| Mercurio, Maria Giovanna | Maria Giovanna Mercurio (Maria Giovanna Mercurio) | Costume Designer | 1993 - 1994 | 2 | |
| Meløy, Marianne | Marianne Meløy (Marianne Meløy) | Actor | 1994 - 2010 | 2 | 1 |
| Mosarov, Vladimir | Vladimir Mosarov (Vladimir Mosarov) | Director, Sound Designer | 2001 | 2 | |
| Moaleş, Elena | Elena Moaleş (Elena Moaleş) | Actor | 2006 | 2 | |
| Münch, Ursula | Ursula Münch (Ursula Münch) | Actor | 1990 - 1992 | 2 | |
| Melsert, W. v.d. Horst-van der Lugt | Wilhelmina van der Horst-van der Lugt Melsert (W. v.d. Horst-van der Lugt Melsert) | Actor | 1911 - 1926 | 2 | |
| Merin, Eda Reiss | Eda Reiss Merin (Eda Reiss Merin) | Actor | 1971 | 2 | |
| Macedonio, Francesco | Francesco Macedonio (Francesco Macedonio) | Director | 1974 | 2 | |
| McEntee, Frank | Frank McEntee (Frank McEntee) | Actor, Director | 1921 | 2 | |
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