| Madder, Leo | Leo Madder | Actor | 1992 - 1998 | 2 | |
| Mizuhara, Hideko | Hideko Mizuhara | Actor | 1968 - 1991 | 2 | |
| Melikyan, Krikor | Krikor Melikyan | Actor | 1961 - 1992 | 2 | |
| Mead, Simon | Simon Mead | Actor | 1988 | 2 | |
| Mannion, Tom | Tom Mannion | Actor | 1988 | 2 | |
| Miller, Harry | Harry Miller | Actor | 1988 | 2 | |
| McElhatton, Michael | Michael McElhatton | Actor | 1988 | 2 | |
| Maciuchová, Hana | Hana Maciuchová | Actor | 1988 - 2012 | 2 | |
| Mahr, Bettina | Bettina Mahr | Actor | 1988 - 1997 | 2 | |
| Mey, Franz | Franz Mey | Actor | 1992 | 2 | |
| Miura, Kenji | Kenji Miura | Actor | 1992 - 1994 | 2 | |
| Moon, David | David Moon | Lighting Designer | 1992 - 2000 | 2 | |
| Montalbán, Juan Carlos | Juan Carlos Montalbán | Actor | 1982 | 2 | |
| Morales, José | José Morales | Actor | 1982 | 2 | |
| Moser, Daniela | Daniela Moser | Dancer | 1994 | 2 | |
| Marios, Konstantinos | Konstantinos Marios | Actor, Director | 1982 | 2 | |
| Mauss, Wiebke | Wiebke Mauss | Actor | 1993 - 1994 | 2 | |
| Mafham, Dominic | Dominic Mafham | Actor | 1991 - 2014 | 2 | 1 |
| Marx, Doris | Doris Marx | Actor | 1977 - 1991 | 2 | |
| Myrow, Shira | Shira Myrow | Actor | 1993 | 2 | |
| Maradudin, Peter | Peter Maradudin | Lighting Designer | 1993 | 2 | |
| Moore, Sophie | Sophie Moore | Actor | 1991 - 1992 | 2 | |
| Manchen, Klaus | Klaus Manchen | Actor | 1993 - 1996 | 2 | 1 |
| Maciejewska, Magdalena | Magdalena Maciejewska | Actor, Designer | 1991 - 1999 | 2 | |
| Molnár, Judit | Judit Molnár | Actor | 1991 - 2006 | 2 | |
| McGuire, William, Francis | William Francis McGuire | Actor | 1993 | 2 | |
| Mesterházy, Gyula | Gyula Mesterházy | Actor | 2004 - 2006 | 2 | |
| McKinney, Alisha | Alisha McKinney | Actor | 1994 - 2002 | 2 | |
| Mello, José Augusto | José Augusto Mello | Lighting Designer | 1982 | 2 | |
| McWhinnie, Donald | Donald McWhinnie | Director | 1959 - 1982 | 2 | 1 |
| Murray, Jane | Jane Murray | Actor | 1982 | 2 | 1 |
| Milojevic, Alexander | Alexander Milojevic | Designer | 1980 - 1982 | 2 | |
| Marquardt, Fritz | Fritz Marquardt | Director | 1982 - 1995 | 2 | 1 |
| Mentz, Arthur | Arthur Mentz | Actor | 1952 - 1982 | 2 | |
| Modschiedler, M. | M. Modschiedler | Actor | 1982 | 2 | |
| Martinos, Giorgos | Giorgos Martinos | Assistant Director | 2014 - 2015 | 2 | |
| Matull, Oskar | Oskar Matull | Actor | 1980 - 1997 | 2 | |
| Midgley, Robin | Robin Midgley | Director | 1969 - 1980 | 2 | 1 |
| McKeown, Fintan | Fintan McKeown | Actor | 1980 - 2010 | 2 | |
| Morick, Jeanine | Jeanine Morick | Actor | 1980 | 2 | |
| Marshall, William, Horace | William Horace Marshall | Actor | 1980 | 2 | 1 |
| Mink, David | David Mink | Actor | 1980 | 2 | |
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