| Martin, Ben | Ben Martin | Actor | 2011 - 2012 | 2 | |
| Murphy, Conor | Conor Murphy | Actor | 2013 - 2023 | 2 | |
| March, Rosalind | Rosalind March | Actor | 1977 - 2013 | 2 | 1 |
| Mureşan, Arhidiade | Arhidiade Mureşan | Costume Designer, Designer | 2009 | 2 | |
| Marinca, Gheorghe | Gheorghe Marinca | Actor, Musical Director | 1968 | 2 | |
| Moss, Robert | Robert Moss | Actor, Director | 1952 - 2013 | 2 | |
| Marley, John | John Marley | Actor | 1950 - 1959 | 2 | |
| McGoohan, Patrick | Patrick McGoohan | Actor | 1959 | 2 | 1 |
| McFarland, Olive | Olive McFarland | Actor | 1959 | 2 | 1 |
| Malmberg, Barbro | Barbro Malmberg | Actor | 1959 | 2 | |
| Matthiesen, Marc | Marc Matthiesen | Adaptation, Dramaturg | 2013 | 2 | |
| Moir, Alec | Alec Moir | Actor | 1957 | 2 | |
| Morton, Clive | Clive Morton | Actor | 1957 - 1958 | 2 | 1 |
| Moe, Ove | Ove Moe | Actor | 1953 - 1956 | 2 | 1 |
| Maurer, Christian | Christian Maurer | Actor, Director | 1960 | 2 | |
| Muller, Rosemarie | Rosemarie Muller | Actor | 1960 - 1975 | 2 | |
| Moreno, Ricardo | Ricardo Moreno | Designer, Lighting Designer | 1956 | 2 | 1 |
| Mușețeanu, Rodica | Rodica Mușețeanu | Actor | 1969 - 1976 | 2 | |
| Manidaki, Eva | Eva Manidaki | Designer, Director | 2013 - 2020 | 2 | |
| Mihailovici, Fifi | Fifi Mihailovici | Actor | 1932 - 1963 | 2 | |
| McQueen, Vincent | Vincent McQueen | Actor | 1956 - 1999 | 2 | |
| McKenna, Seana | Seana McKenna | Actor | 2016 - 2020 | 2 | |
| Moldovan, Gheorghe | Gheorghe Moldovan | Actor | 1978 - 1995 | 2 | |
| Müller, Hanns | Hanns Müller | Actor | 1956 | 2 | |
| Meierhofer, Felix | Felix Meierhofer | Actor | 1956 | 2 | |
| Marmeliuc, Lia | Lia Marmeliuc | Translator | 1957 - 1967 | 2 | |
| Molocea, Constantin | Constantin Molocea | Costume Designer, Designer | 1993 | 2 | |
| Meinrad, Lia | Lia Meinrad | Actor | 1916 - 1918 | 2 | |
| Montonen, Uuno | Uuno Montonen | Actor | 1935 - 1955 | 2 | |
| Magnusson, Georg | Georg Magnusson | Designer | 1955 - 1958 | 2 | |
| Mugur, Dimitrie | Dimitrie Mugur | Actor | 1934 - 1943 | 2 | |
| Murgatroyd, Betty | Betty Murgatroyd | Actor | 1943 - 1953 | 2 | |
| Masarachia, Felix | Felix Masarachia | Actor, Composer | 1952 | 2 | |
| Mjelva, Gunvor | Gunvor Mjelva | Actor | 1952 - 2006 | 2 | |
| McGarity, Daniel | Daniel McGarity | Actor | 1951 | 2 | |
| Mai, Felicitas | Felicitas Mai | Dramaturg, Translator | 1998 | 2 | |
| Mitchell, Norman | Norman Mitchell | Actor | 1947 - 1951 | 2 | |
| May, Jack | Jack May | Actor | 1951 | 2 | |
| Minkow, Gene S. | Gene S. Minkow | Adaptation, Director | 1998 | 2 | |
| Maguire, Jim | Jim Maguire | Actor | 1960 | 2 | |
| Maneely, Robin | Robin Maneely | Actor, Dancer | 1960 | 2 | |
| McGarry, Jim | Jim McGarry | Actor | 1954 | 2 | |
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