| Molron, France | France Molron (France Molron) | Actor | 1975 - 1977 | 10 | |
| Madsen, Frederik | Frederik Madsen (Frederik Madsen) | Actor | 1876 - 1880 | 2 | |
| Machado, A. Reis | A. Reis Machado (A. Reis Machado) | Adaptation | 1990 | 1 | |
| Mahamood Ansari, Atta | Atta Mahamood Ansari (Atta Mahamood Ansari) | Assistant Director | 1992 | 1 | |
| Mercurio, Mimma | Mimma Mercurio (Mimma Mercurio) | Actor | 1994 | 1 | |
| MacHugh, Tina | Tina MacHugh (Tina MacHugh) | Lighting Designer | 1990 - 2000 | 13 | |
| Makuchenko, V. | V. Makuchenko (V. Makuchenko) | | | | |
| Meisner, Robin | Robin Meisner (Robin Meisner) | Actor | 2002 - 2009 | 43 | |
| Mitsuya, Mori | Mori Mitsuya (Mori Mitsuya) | | | | |
| Mizuno, Yu | Yu Mizuno (Yu Mizuno) | Actor | 2004 - 2013 | 20 | |
| Mette Swenson, Trine | Trine Mette Swenson (Trine Mette Swenson) | Lighting Designer, Mask Maker | 1989 - 1997 | 154 | |
| Møller, Mette | Mette Møller (Mette Møller) | Choreographer | 1976 - 1990 | 97 | |
| Maës, Tove | Tove Maës (Tove Maës) | Actor | 1967 | 1 | |
| Mezzacappo, E | E Mezzacappo (E Mezzacappo) | Composer | 1937 | 1 | |
| Meyer MacLeod, Arielle | Arielle Meyer MacLeod (Arielle Meyer MacLeod) | Dramaturg | 2004 | 1 | |
| Manni, Tarmo | Tarmo Manni (Tarmo Manni) | Actor | 1955 - 1973 | 3 | |
| Myrann Sørbøe, Ilene | Ilene Myrann Sørbøe (Ilene Myrann Sørbøe) | Actor, Director, Dramaturg | 1999 - 2023 | 8 | |
| Montarello, Jose | Jose Montarello (Jose Montarello) | Actor | 1986 | 2 | |
| Mitchell, Tate Katie | Tate Katie Mitchell (Tate Katie Mitchell) | Actor | 2003 - 2011 | 34 | |
| Muphuwa, Fred | Fred Muphuwa (Fred Muphuwa) | Actor, Composer | 2006 | 24 | |
| Mansour, Youssef Ait | Youssef Ait Mansour (Youssef Ait Mansour) | Actor | 2002 - 2017 | 15 | |
| Mariani, Teresa | Teresa Mariani | Actor | 1892 - 1910 | 33 | |
| Myers, Troy | Troy Myers (Troy Myers) | Actor | 2006 | 2 | |
| Maxie Federman, Heather | Heather Maxie Federman (Heather Maxie Federman) | Actor | 1995 | 1 | |
| Martin, Nigel | Nigel Martin (Nigel Martin) | Actor | 1984 | 1 | |
| Maoysz, Mieczysoaw | Mieczysoaw Maoysz (Mieczysoaw Maoysz) | Director | 1970 | 1 | |
| Müller, U. | U. Müller (U. Müller) | Actor | 1999 | 1 | |
| Moore, Eva Mae | Eva Mae Moore (Eva Mae Moore) | Actor | 1928 | 2 | |
| Mari, Febo | Febo Mari (Febo Mari) | Actor, Director | 1919 | 2 | |
| Mordeglia, Nietta | Nietta Mordeglia (Nietta Mordeglia) | Actor | 1919 | 1 | |
| Maurstad, Toralv | Toralv Maurstad (Toralv Maurstad) | Actor, Director, Musical Director | 1940 - 2020 | 40 | |
| Mićunović, Branislav | Branislav Mićunović (Branislav Mićunović) | Adaptation, Costume Designer, Designer, Director | 2000 - 2001 | 12 | |
| McClennahan, Charles H. | Charles H. McClennahan (Charles H. McClennahan) | Designer | 1989 | 1 | |
| Mikula-Proksa, Marzena | Marzena Mikula-Proksa (Marzena Mikula-Proksa) | Composer | 1979 | 1 | |
| McIntyre, Deirdre | Deirdre McIntyre (Deirdre McIntyre) | Lighting Designer | 1960 | 1 | |
| Mihályfi, Mihályfi | Mihályfi Mihályfi (Mihályfi Mihályfi) | Actor | 1889 - 1890 | 2 | |
| Márkus, Emília | Emília Márkus | Actor | 1889 - 1927 | 22 | |
| Madsen, Kristian Riis | Kristian Riis Madsen (Kristian Riis Madsen) | Designer | 2006 | 1 | |
| Møller, Valdemar | Valdemar Møller (Valdemar Møller) | Actor | 1906 - 1933 | 16 | |
| Mjøs, Jon Endre | Jon Endre Mjøs (Jon Endre Mjøs) | Actor | 1995 | 1 | |
| Meloy, Nordvik | Nordvik Meloy (Nordvik Meloy) | | | | |
| Magnussen, Arne Chr. | Arne Chr. Magnussen (Arne Chr. Magnussen) | Actor | 1951 | 8 | |
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