| Maruyama, Sadao | Sadao Maruyama (Sadao Maruyama) | Actor, Director | 1925 - 1936 | 4 | |
| Marx, Paul | Paul Marx (Paul Marx) | Actor | 1905 - 1933 | 20 | |
| Marx-Aveling, Eleanor | Eleanor Marx-Aveling (Eleanor Marx-Aveling) | Translator | 1891 - 2010 | 7 | |
| März, Daniela | Daniela März (Daniela März) | Actor | 2001 - 2002 | 4 | |
| Marzewski, Lucjan | Lucjan Marzewski (Lucjan Marzewski) | Composer | 1989 | 1 | |
| Marzi, Davide | Davide Marzi (Davide Marzi) | Actor | 1999 - 2000 | 4 | |
| Mascus, Hella-Birgit | Hella-Birgit Mascus (Hella-Birgit Mascus) | Actor | 1989 - 1990 | 2 | |
| Maskell, Robert | Robert Maskell (Robert Maskell) | Actor | 2002 | 1 | |
| Maslon, Laurence | Laurence Maslon (Laurence Maslon) | Dramaturg | 1985 - 1995 | 3 | |
| Mason, Dan | Dan Mason (Dan Mason) | Actor | 1996 - 2013 | 3 | |
| Mason, Marsha | Marsha Mason (Marsha Mason) | Actor | 1973 | 1 | |
| Massera, Jarmila | Jarmila Massera (Jarmila Massera) | Designer | 1971 | 1 | |
| Massey, Hart | Hart Massey (Hart Massey) | Actor | 2000 | 1 | |
| Masson, Ernst | Ernst Masson (Ernst Masson) | Designer | 1973 | 1 | |
| Masteller, Kerry | Kerry Masteller (Kerry Masteller) | Actor | 2000 | 1 | |
| Małynicz, Zofia | Zofia Małynicz (Zofia Małynicz) | Actor | 1958 | 1 | |
| Matela, Kimberly | Kimberly Matela (Kimberly Matela) | Costume Designer | 2006 | 2 | |
| Mathew, Gisela | Gisela Mathew (Gisela Mathew) | Actor | 1945 | 1 | |
| Matikainen, Osmo | Osmo Matikainen (Osmo Matikainen) | Actor | 1983 - 2006 | 2 | |
| Matiki, Mafumu | Mafumu Matiki (Mafumu Matiki) | Actor | 2006 | 23 | |
| Matschoss, Ulrich | Ulrich Matschoss (Ulrich Matschoss) | Actor | 1964 - 1980 | 5 | |
| Matsui, Kiyoko | Kiyoko Matsui (Kiyoko Matsui) | Actor | 1924 | 1 | |
| Matsui, Suma | Suma Matsui (Suma Matsui) | Actor | 1911 - 1912 | 4 | |
| Matsui, Sumako | Sumako Matsui (Sumako Matsui) | Actor | 1914 | 2 | |
| Matsumoto, Junko | Junko Matsumoto (Junko Matsumoto) | Actor | 1978 | 1 | |
| Matsumoto, Kappei | Kappei Matsumoto (Kappei Matsumoto) | Actor | 1934 - 1978 | 2 | |
| Matsuyama, Utako | Utako Matsuyama (Utako Matsuyama) | Actor | 1914 | 1 | |
| Matthews, Helen | Helen Matthews (Helen Matthews) | Actor | 1884 | 1 | |
| Matthiae, Oliver | Oliver Matthiae (Oliver Matthiae) | Actor | 2002 - 2008 | 16 | |
| Matthias, Marina | Marina Matthias (Marina Matthias) | Actor | 1997 - 2006 | 8 | |
| Matthias, Peter | Peter Matthias (Peter Matthias) | Actor | 1975 - 1992 | 2 | |
| Mattsson, Per | Per Mattsson (Per Mattsson) | Actor | 1989 - 1998 | 15 | |
| Matus, Michael | Michael Matus (Michael Matus) | Actor | 2005 | 1 | |
| Matveeva, Svetlana | Svetlana Matveeva (Svetlana Matveeva) | Actor, Costume Designer, Designer | 2001 | 3 | |
| Mátyás, Jolán | Jolán Mátyás (Jolán Mátyás) | Actor | 1965 - 1969 | 2 | |
| Matysová, Milada | Milada Matysová (Milada Matysová) | Actor | 1939 - 1954 | 3 | |
| Matz, Katharina | Katharina Matz (Katharina Matz) | Actor | 1956 - 1985 | 3 | |
| Matzen, Volkert | Volkert Matzen (Volkert Matzen) | Actor | 1985 - 1997 | 4 | |
| Matzkanin, Mark | Mark Matzkanin (Mark Matzkanin) | Lighting Designer | 1990 - 2007 | 2 | |
| Maud, Jane | Jane Maud (Jane Maud) | Actor | 1994 | 1 | |
| Maué, Cornelia | Cornelia Maué (Cornelia Maué) | Actor | 1977 | 1 | |
| Mauer, Lubo | Lubo Mauer (Lubo Mauer) | Producer, Translator | 1975 - 1976 | 4 | |
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