| Morris, William | William Morris | Actor | 1904 | 1 | 1 |
| McGilvray, Laura | Laura McGilvray | Actor | 1904 | 1 | 1 |
| Mason, John | John Mason | Actor | 1904 | 1 | 1 |
| Massen, Louis | Louis Massen | Actor | 1904 | 1 | 1 |
| Millward, Charles | Charles Millward | Actor | 1904 | 1 | 1 |
| Minto, Dorothy | Dorothy Minto | Actor | 1905 | 1 | 1 |
| Moor, Karel | Karel Moor | Adaptation, Composer | 1905 | 2 | 1 |
| Mirskaya, Mme. | Mme. Mirskaya | Actor | 1906 | 2 | 1 |
| Møller, Julie | Julie Møller | Actor | 1906 | 1 | 1 |
| Measor, Adela | Adela Measor | Actor | 1907 | 1 | 1 |
| Majeroni, Georgio | Georgio Majeroni | Actor | 1907 | 1 | 1 |
| McVicker, Sarah | Sarah McVicker | Actor | 1907 | 1 | 1 |
| Mellish, Fuller | Fuller Mellish | Actor | 1907 - 1910 | 8 | 1 |
| Montgomery, Florence | Florence Montgomery | Actor | 1907 - 1908 | 4 | 1 |
| McNeill, Mildred | Mildred McNeill | Actor | 1908 | 1 | 1 |
| Macklin, Ouida | Ouida Macklin | Actor | 1909 | 2 | 1 |
| Mackay, Edward | Edward Mackay | Actor | 1910 | 3 | 1 |
| Maddern, Merle | Merle Maddern | Actor | 1910 - 1948 | 5 | 1 |
| Milton, Robert | Robert Milton | Director | 1910 | 2 | 1 |
| Myhrvold, Dagmar | Dagmar Myhrvold | Actor | 1948 - 1968 | 24 | 1 |
| Moen, Svein | Svein Moen | Actor | 1971 - 1978 | 12 | 1 |
| McDiarmid, Ian | Ian McDiarmid | Actor | 1980 - 2011 | 4 | 1 |
| Murray, Braham | Braham Murray | Director | 1999 - 2001 | 2 | 1 |
| McColl, Colin | Colin McColl | Actor, Director | 1969 - 2017 | 13 | 1 |
| Mithassel, Reinert | Reinert Mithassel | Director | 1991 | 1 | 1 |
| Munch, Trond Peter Stamsø | Trond Peter Stamsø Munch | Actor | 1992 - 2017 | 12 | 1 |
| Martens, Camilla | Camilla Martens | Actor, Adaptation, Director | 1993 - 2006 | 3 | 1 |
| Martinsen, Aril | Aril Martinsen | Actor | 1978 - 1997 | 67 | 1 |
| Matheson, Elisabeth | Elisabeth Matheson | Actor | 1993 - 2003 | 2 | 1 |
| Mahler, Gustav | Gustav Mahler | Composer | 1979 - 2003 | 10 | 1 |
| Manheim, Hæge | Hæge Manheim | Actor | 1994 - 1998 | 3 | 1 |
| Myhren, Dagne Groven | Dagne Groven Myhren | Director | 1994 - 1995 | 2 | 1 |
| Mauseth, Gørild | Gørild Mauseth | Actor | 1994 - 2003 | 25 | 1 |
| Meling, Audun | Audun Meling | Actor | 1983 - 1997 | 14 | 1 |
| Mo, Kristianne | Kristianne Mo | Actor, Dancer | 1997 | 35 | 1 |
| Myrtvedt, Olav | Olav Myrtvedt | Costume Designer, Designer | 1988 - 2020 | 35 | 1 |
| Münzner, Susanne | Susanne Münzner | Costume Designer, Designer | 2004 - 2015 | 13 | 1 |
| Moe, Bodvar | Bodvar Moe | Composer | 2004 | 1 | 1 |
| Medbøe, Wenche | Wenche Medbøe | Actor | 1968 - 2006 | 72 | 1 |
| Molvær, Nils Petter | Nils Petter Molvær | Composer | 2005 - 2024 | 63 | 1 |
| Mehlum, Ipek D. | Ipek D. Mehlum | Actor | 2006 | 34 | 1 |
| Meirik, Victoria H. | Victoria H. Meirik | Adaptation, Director | 2003 - 2023 | 13 | 1 |
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