| Motta, Litzajaya | Litzajaya Motta | Adaptation, Designer, Director | 1997 | 3 | |
| Miranda-Bascunan, David | David Miranda-Bascunan | Actor | 1995 | 3 | |
| Mortimer, Terry | Terry Mortimer | Actor, Musical Director | 1980 | 3 | |
| Moravec, Tomáš | Tomáš Moravec | Designer | 1995 - 2012 | 3 | |
| Milliken, Catherine | Catherine Milliken | Composer | 1996 | 3 | |
| Matsumura, Hikojiro | Hikojiro Matsumura | Actor | 1996 - 2002 | 3 | |
| Meyer, Jessica | Jessica Meyer | Actor | 1995 | 3 | |
| Müller, Wiebke | Wiebke Müller | Actor | 1995 | 3 | |
| Międzik, Tomasz | Tomasz Międzik | Actor | 1995 - 2009 | 3 | |
| Miśkiewicz, Paweł | Paweł Miśkiewicz | Director | 1995 - 2007 | 3 | 1 |
| Müller, Anna | Anna Müller | Actor | 1995 | 3 | |
| Malmring, Olle | Olle Malmring | Actor | 1997 | 3 | |
| Mészáros, Mihály | Mihály Mészáros | Actor | 1995 - 2007 | 3 | |
| Melo, Sônia | Sônia Melo | Actor | 1994 | 3 | |
| Malonyai, Dezső | Dezső Malonyai | Translator | 1890 - 1891 | 3 | 1 |
| Maciejewski, Zygmunt | Zygmunt Maciejewski | Actor | 1963 - 1969 | 3 | |
| Matamoros, Diego | Diego Matamoros | Actor | 2005 - 2016 | 3 | 1 |
| McKey, Susan | Susan McKey | Actor | 1998 - 2011 | 3 | 1 |
| Molnár, János | János Molnár | Actor | 1920 - 1924 | 3 | |
| McCarty, Joel | Joel McCarty | Lighting Designer | 1969 - 1970 | 3 | |
| Mosch, Rita | Rita Mosch | Actor | 1968 - 2003 | 3 | |
| Moffat, Donald | Donald Moffat | Actor | 1965 - 1967 | 3 | 1 |
| Mackert, Josef | Josef Mackert | Dramaturg | 2004 - 2007 | 3 | 1 |
| Matzura, Evelyn | Evelyn Matzura | Actor | 1967 - 1971 | 3 | |
| Mannermaa, Esko | Esko Mannermaa | Actor | 1967 - 1971 | 3 | |
| Madison, Lawrence | Lawrence Madison | Actor | 1966 | 3 | |
| McGovern, Dennis | Dennis McGovern | Actor | 1965 | 3 | |
| Morgan, Mario | Mario Morgan | Adaptation, Director | 1965 - 1980 | 3 | |
| M. Tesoro, Carlos | Carlos M. Tesoro | Actor | 2002 | 3 | |
| Mercelas, Luisa | Luisa Mercelas | Actor | 2002 | 3 | |
| Madeira, Rui | Rui Madeira | Director | 2002 | 3 | |
| Middleton, Stephen | Stephen Middleton | Actor | 2002 - 2008 | 3 | |
| Mumenthaler, Heidi | Heidi Mumenthaler | Actor | 1989 | 3 | |
| Mizoguchi, Junko | Junko Mizoguchi | Actor | 2002 - 2007 | 3 | |
| Marques, Paula | Paula Marques | Actor | 1997 - 1998 | 3 | |
| Moranguinho, Hugo | Hugo Moranguinho | Actor | 1997 - 1998 | 3 | |
| Martins, Alexandre | Alexandre Martins | Actor | 1997 - 1998 | 3 | |
| Mouta, Filomena | Filomena Mouta | Actor | 1997 - 1998 | 3 | |
| Miranda, Maria, José | Maria José Miranda | Actor | 1997 - 1998 | 3 | |
| Moreira da Silva, Alexandra | Alexandra Moreira da Silva | Translator | 1997 - 1998 | 3 | |
| Meglič, Viktor | Viktor Meglič | Actor | 2003 - 2013 | 3 | |
| Meikle, David Scott | David Scott Meikle | Actor | 1989 | 3 | |
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