| Mizuno, Yu | Yu Mizuno | Actor | 2004 – 2010 | 20 | |
| Mette Swenson, Trine, | Trine Mette Swenson | Lighting Designer, Mask Maker | 1989 – 1997 | 154 | |
| Møller, Mette, | Mette Møller | Choreographer | 1976 – 1990 | 97 | |
| Maës, Tove | Tove Maës | Actor | 1967 | 1 | |
| Mezzacappo, E | E Mezzacappo | Composer | 1937 | 1 | |
| Meyer MacLeod, Arielle | Arielle Meyer MacLeod | Dramaturg | 2004 | 1 | |
| Manni, Tarmo, | Tarmo Manni | Actor | 1955 | 3 | |
| Myrann Sørbøe, Ilene, | Ilene Myrann Sørbøe | Actor, Director | 1999 – 2015 | 7 | |
| Montarello, Jose | Jose Montarello | Actor | 1986 | 2 | |
| Mitchell, Tate Katie | Tate Katie Mitchell | Actor | 2003 – 2011 | 34 | |
| Muphuwa, Fred, | Fred Muphuwa | Actor, Composer | 2006 | 24 | |
| Mansour, Youssef Ait, | Youssef Ait Mansour | Actor | 2002 | 15 | |
| Myers, Troy, | Troy Myers | Actor | 2006 | 2 | |
| Maxie Federman, Heather | Heather Maxie Federman | Actor | 1995 | 1 | |
| Martin, Nigel | Nigel Martin | Actor | 1984 | 1 | |
| Maoysz, Mieczysoaw | Mieczysoaw Maoysz | Director | 1970 | 1 | |
| Müller, U. | U. Müller | Actor | 1999 | 1 | |
| Moore, Eva Mae | Eva Mae Moore | Actor | 1928 | 2 | |
| Mari, Febo | Febo Mari | Actor, Director | 1919 | 2 | |
| Mordeglia, Nietta | Nietta Mordeglia | Actor | 1919 | 1 | |
| Maurstad, Toralv, | Toralv Maurstad | Actor, Director, Musical Director | 1940 – 2019 | 40 | |
| Mićunović, Branislav, | Branislav Mićunović | Adaptation, Costume Designer, Designer, Director | 2000 | 12 | |
| McClennahan, Charles H. | Charles H. McClennahan | Designer | 1989 | 1 | |
| Mikula-Proksa, Marzena | Marzena Mikula-Proksa | Composer | 1979 | 1 | |
| McIntyre, Deirdre | Deirdre McIntyre | Lighting Designer | 1960 | 1 | |
| Mihályfi, Mihályfi, | Mihályfi Mihályfi | Actor | 1889 | 2 | |
| Márkus, Emília | Emília Márkus | Actor | 1889 – 1918 | 22 | |
| Mærli, Terje, | Terje Mærli | Adaptation, Director, Producer | 1973 – 2007 | 221 | |
| Madsen, Kristian Riis, | Kristian Riis Madsen | Designer | 2006 | 1 | |
| Møller, Valdemar, | Valdemar Møller | Actor | 1906 – 1934 | 16 | |
| Mjøs, Jon Endre, | Jon Endre Mjøs | Actor | 1995 | 1 | |
| Meloy, Nordvik | Nordvik Meloy | | | | |
| Magnussen, Arne Chr. | Arne Chr. Magnussen | Actor | 1951 | 8 | |
| Morgen, Therese, | Therese Morgen | Actor | 1916 | 2 | |
| Mallickjoly, Wahida | Wahida Mallickjoly | Costume Designer | 1998 – 2002 | 1 | |
| Michels, Hans Herbert, | Hans Herbert Michels | Actor | 1934 | 2 | |
| Makedonskij, K. | K. Makedonskij | Actor | 1938 | 1 | |
| Malachova, Z. | Z. Malachova | Actor | 1938 | 1 | |
| Mabusenko, V. | V. Mabusenko | Designer | 1999 | 2 | |
| Musina, O. | O. Musina | Actor | 1999 | 2 | |
| Markworth, Trevor | Trevor Markworth | Actor | 2000 – 2002 | 2 | |
| Merckel, Nola | Nola Merckel | Actor | 2002 | 1 | |
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