| Martinelli, Umberto | Umberto Martinelli | Designer | 1982 | 1 | |
| Mejuto, Andrés | Andrés Mejuto | Actor | 1968 - 1982 | 6 | |
| Montalbán, Juan Carlos | Juan Carlos Montalbán | Actor | 1982 | 2 | |
| Morales, José | José Morales | Actor | 1982 | 2 | |
| Mengarelli, Mikael | Mikael Mengarelli | Dancer | 1992 | 1 | |
| Mierczak, Malgorzata | Malgorzata Mierczak | Actor | 1992 | 1 | |
| Moffit, Tom | Tom Moffit | Actor | 1989 | 1 | |
| Matsakas, Kostas | Kostas Matsakas | Actor | 1962 - 1989 | 3 | |
| Mann, Karen | Karen Mann | Actor | 1989 | 1 | |
| Müller, Bernd-Dieter | Bernd-Dieter Müller | Adaptation, Designer, Director | 1989 - 2003 | 9 | |
| Moser, Daniela | Daniela Moser | Dancer | 1994 | 2 | |
| Meister, Isolde | Isolde Meister | Actor | 1994 | 1 | |
| Maxim, Dorina | Dorina Maxim | Dancer | 1994 | 5 | |
| Mena, Sonia | Sonia Mena | Actor | 1991 | 1 | |
| Miranda, Manuel | Manuel Miranda | Actor | 1991 | 1 | |
| Molina, Patricio | Patricio Molina | Actor | 1991 | 1 | |
| Meszléry, Judit | Judit Meszléry | Actor | 1982 | 1 | |
| Maday, Emőke | Emőke Maday | Actor | 1982 | 1 | |
| Molnár, Mózes | Mózes Molnár | Actor | 1982 | 1 | |
| Mavropoulou, Gkely | Gkely Mavropoulou | Actor | 1958 - 1982 | 4 | |
| Marios, Konstantinos | Konstantinos Marios | Actor, Director | 1982 | 2 | |
| Mitchell, Katie | Katie Mitchell | Director | 1993 - 1994 | 3 | |
| Mortimer, Vicki | Vicki Mortimer | Designer | 1993 - 2010 | 6 | |
| Moen, Max | Max Moen | Actor | 1993 | 1 | |
| Matuszak, Brian | Brian Matuszak | Director | 1993 | 1 | |
| Mathias, Sean | Sean Mathias | Director | 1993 | 3 | |
| MacLiammoir, Nick | Nick MacLiammoir | Lighting Designer | 1993 | 3 | |
| Magnús, Kristján, Franklin | Kristján Franklin Magnús | Actor | 1993 | 1 | |
| Mezon, Jim | Jim Mezon | Actor | 1989 - 2012 | 3 | |
| Macdonald, Robert David | Robert David Macdonald | Translator | 1991 | 1 | |
| Marsden, Roy | Roy Marsden | Actor | 1991 | 1 | |
| Muła, Franciszek | Franciszek Muła | Actor | 1991 | 1 | |
| Mauss, Wiebke | Wiebke Mauss | Actor | 1993 - 1994 | 2 | |
| Mathea, Helga | Helga Mathea | Dramaturg | 1993 | 1 | |
| Martinus, Charlotta | Charlotta Martinus | Translator | 1991 | 1 | |
| MacNaughtan, Alan | Alan MacNaughtan | Actor | 1948 - 1991 | 5 | |
| Morawetz, Dorota | Dorota Morawetz | Costume Designer | 1993 | 1 | |
| Mafham, Dominic | Dominic Mafham | Actor | 1991 - 2014 | 2 | |
| Max, Edward | Edward Max | Actor | 1991 | 3 | |
| Marx, Doris | Doris Marx | Actor | 1977 - 1991 | 2 | |
| Myrow, Shira | Shira Myrow | Actor | 1993 | 2 | |
| Monahan, Kathy | Kathy Monahan | Actor | 1993 | 4 | |
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