| Marino, Joseph | Joseph Marino | Actor | 1961 | 1 | 1 |
| McQuade, John | John McQuade | Actor | 1961 | 1 | 1 |
| Melnikova, Darya | Darya Melnikova | Actor | 2012 | 1 | 1 |
| Mjøen, Fridtjof | Fridtjof Mjøen | Actor | 1945 - 1960 | 5 | 1 |
| March, Lori | Lori March | Actor | 1960 | 1 | 1 |
| Møller, Christen | Christen Møller | Actor, Adaptation, Director | 1934 - 1964 | 4 | 1 |
| Miranda, Lucía | Lucía Miranda | Adaptation, Director | 2015 - 2017 | 28 | 1 |
| Moniri, Nina | Nina Moniri | Actor | 2013 | 1 | 1 |
| Manten, Martine | Martine Manten | Adaptation, Dramaturg | 2012 - 2013 | 58 | 1 |
| Marian, B. | B. Marian | Translator | 1901 | 2 | 1 |
| March, Rosalind | Rosalind March | Actor | 1977 - 2013 | 2 | 1 |
| Moore, Max, Gordon | Max Gordon Moore | Actor | 2013 | 1 | 1 |
| McGoohan, Patrick | Patrick McGoohan | Actor | 1959 | 2 | 1 |
| McFarland, Olive | Olive McFarland | Actor | 1959 | 2 | 1 |
| McCarthy, Mary | Mary McCarthy | Actor | 1959 | 1 | 1 |
| Mowls, Shirley | Shirley Mowls | Actor | 1959 | 1 | 1 |
| Mellvig, Börje | Börje Mellvig | Actor, Director | 1936 - 1958 | 5 | 1 |
| McDonald, Hugh | Hugh McDonald | Actor | 1958 | 1 | 1 |
| McDonald, Peg | Peg McDonald | Actor | 1958 | 1 | 1 |
| Malkin, B. | B. Malkin | Director | 1957 | 1 | 1 |
| Morton, Clive | Clive Morton | Actor | 1957 - 1958 | 2 | 1 |
| Moe, Ove | Ove Moe | Actor | 1953 - 1956 | 2 | 1 |
| Moreno, Ricardo | Ricardo Moreno | Designer, Lighting Designer | 1956 | 2 | 1 |
| Marinkovic, Rados | Rados Marinkovic | Costume Designer | 1956 | 1 | 1 |
| Marber, Patrick Albert Crispin | Patrick Albert Crispin Marber | Adapter, Translator | 2016 - 2025 | 11 | 1 |
| Macdonald, Murray | Murray Macdonald | Director | 1955 | 1 | 1 |
| Mittler, Leo | Leo Mittler | Director | 1953 | 1 | 1 |
| Meysel, Inge | Inge Meysel | Actor | 1953 | 1 | 1 |
| Middleton, Robert | Robert Middleton | Actor | 1951 | 1 | 1 |
| March, Fredric | Fredric March | Actor | 1950 | 1 | 1 |
| Maurice, Joël | Joël Maurice | Actor | 2000 | 1 | 1 |
| Maccie, Liz | Liz Maccie | Actor | 1998 - 1999 | 2 | 1 |
| Mussbach, Peter | Peter Mussbach | Director | 1998 | 1 | 1 |
| Margid, Elizabeth | Elizabeth Margid | Director | 1998 | 1 | 1 |
| Maré, Quentin | Quentin Maré | Actor | 2000 | 1 | 1 |
| Matthews, Douglas | Douglas Matthews | Actor | 1935 - 1936 | 2 | 1 |
| Marquet, Mary | Mary Marquet | Actor | 1936 | 1 | 1 |
| Macowan, Michael | Michael Macowan | Producer | 1936 | 1 | 1 |
| Miranda, Pia | Pia Miranda | Actor | 1999 | 2 | 1 |
| Maltrana, Isidro | Isidro Maltrana | Adaptation | 1999 | 1 | 1 |
| Melletin, Birgitte | Birgitte Melletin | Costume Designer, Designer | 1999 | 2 | 1 |
| McClure, Trina | Trina McClure | Actor | 1999 | 1 | 1 |
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