| Muñoz, José | José Muñoz (José Muñoz) | Actor | 1954 - 1956 | 2 | |
| Massey, Anna | Anna Massey (Anna Massey) | Actor | 1970 - 1973 | 2 | |
| Mejerchol'd, Vsevolod Ė. | Vsevolod Ė. Mejerchol'd (Vsevolod Ė. Mejerchol'd) | Director | 1906 - 1907 | 2 | |
| Moser, William | William Moser (William Moser) | Costume Designer, Designer | 1996 - 2005 | 2 | |
| Meyerhoff, Juliane | Juliane Meyerhoff (Juliane Meyerhoff) | Actor | 1976 - 2009 | 2 | |
| Markus, Tarja | Tarja Markus (Tarja Markus) | Actor | 1967 - 1977 | 2 | |
| Maas, Dieter | Dieter Maas (Dieter Maas) | Actor | 1978 - 1998 | 2 | |
| Macaleer, Carey | Carey Macaleer (Carey Macaleer) | Actor | 2006 | 2 | |
| Madden, Donald | Donald Madden (Donald Madden) | Actor | 1971 | 2 | |
| Madsen, Julie | Julie Madsen (Julie Madsen) | Actor | 1915 | 2 | |
| Madsen, Soren | Soren Madsen (Soren Madsen) | Designer | 2001 | 2 | |
| Magerman, Els | Els Magerman (Els Magerman) | Actor | 1972 - 1996 | 2 | |
| Magrofuoco, Jacques | Jacques Magrofuoco (Jacques Magrofuoco) | Sound Designer | 1986 | 2 | |
| Maier, Werner | Werner Maier (Werner Maier) | Sound Designer | 1974 - 1978 | 2 | |
| Maier-Gehring, Christoph | Christoph Maier-Gehring (Christoph Maier-Gehring) | Dramaturg | 2001 - 2003 | 2 | |
| Majewsky, Stella | Stella Majewsky (Stella Majewsky) | Actor | 1995 | 2 | |
| Malaka, Bernard | Bernard Malaka (Bernard Malaka) | Actor | 2003 | 2 | |
| Malinowska, Czesława | Czesława Malinowska (Czesława Malinowska) | Actor | 1905 | 2 | |
| Malsbender, Herbert | Herbert Malsbender (Herbert Malsbender) | Actor | 1950 - 1963 | 2 | |
| Manasiev, Plamen | Plamen Manasiev (Пламен Манасиев) | Actor | 2001 - 2022 | 2 | |
| Mandel, Ellen | Ellen Mandel (Ellen Mandel) | Composer | 1994 - 1997 | 2 | |
| Mánik, László | László Mánik (László Mánik) | Mask Maker | 1961 - 1969 | 2 | |
| Mannheimer, Bodil | Bodil Mannheimer (Bodil Mannheimer) | Actor | 1968 | 2 | |
| Mantius, Karlheinz | Karlheinz Mantius (Karlheinz Mantius) | Actor | 1964 - 1973 | 2 | |
| Marin, Hans | Hans Marin (Hans Marin) | Actor | 1973 - 1988 | 2 | |
| Maron, Hanna | Hanna Maron (Hanna Maron) | Actor | 1959 - 1966 | 2 | |
| Martin, Bob | Bob Martin (Bob Martin) | Lighting Designer, Sound Designer | 1990 | 2 | |
| Mascus, Hella-Birgit | Hella-Birgit Mascus (Hella-Birgit Mascus) | Actor | 1989 - 1990 | 2 | |
| Matela, Kimberly | Kimberly Matela (Kimberly Matela) | Costume Designer | 2006 | 2 | |
| Matikainen, Osmo | Osmo Matikainen (Osmo Matikainen) | Actor | 1983 - 2006 | 2 | |
| Matsui, Sumako | Sumako Matsui (Sumako Matsui) | Actor | 1914 | 2 | |
| Matsumoto, Kappei | Kappei Matsumoto (Kappei Matsumoto) | Actor | 1934 - 1978 | 2 | |
| Matthias, Peter | Peter Matthias (Peter Matthias) | Actor | 1975 - 1992 | 2 | |
| Mátyás, Jolán | Jolán Mátyás (Jolán Mátyás) | Actor | 1965 - 1969 | 2 | |
| Matzkanin, Mark | Mark Matzkanin (Mark Matzkanin) | Lighting Designer | 1990 - 2007 | 2 | |
| Mauhs, Else | Else Mauhs (Else Mauhs) | Actor | 1925 - 1928 | 2 | |
| May, Eberhard | Eberhard May (Eberhard May) | Actor | 1975 - 1997 | 2 | |
| McCarthy, Eoin | Eoin McCarthy (Eoin McCarthy) | Actor | 2000 - 2003 | 2 | |
| McCracken, Everett | Everett McCracken (Everett McCracken) | Composer | 1928 | 2 | |
| McMahon, Charles | Charles McMahon (Charles McMahon) | Actor, Director | 1999 - 2005 | 2 | |
| McSweeney, Kevin | Kevin McSweeney (Kevin McSweeney) | Director | 2001 | 2 | |
| McWilliams, Jack | Jack McWilliams (Jack McWilliams) | Actor | 1928 | 2 | |
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