| Myung A, Lee | Lee Myung A | Costume Designer | 2009 - 2012 | 3 | |
| Mancianti, Andrea | Andrea Mancianti | Adaptation, Composer, Musician | 2010 | 3 | |
| Mercantel, Stephen | Stephen Mercantel | Actor | 2010 | 3 | |
| Menzies, Maryann | Maryann Menzies | Actor | 2010 | 3 | |
| Mihelič, Irena | Irena Mihelič | Actor | 2009 | 3 | |
| Miyagi, Satoshi | Satoshi Miyagi | Director | 2010 - 2023 | 3 | |
| Mukhoapdhyay, Sohini | Sohini Mukhoapdhyay | Actor | 2009 - 2010 | 3 | |
| Mukhopadhyay, Shiboprasad | Shiboprasad Mukhopadhyay | Actor | 2009 - 2010 | 3 | |
| Mukhopadhyay, Dipok | Dipok Mukhopadhyay | Lighting Designer | 2009 - 2010 | 3 | |
| Millington, Kevin | Kevin Millington | Actor | 2010 | 3 | |
| Matero, Essi | Essi Matero | Actor | 2009 | 3 | |
| Manu, - | - Manu | Actor | 2009 - 2012 | 3 | |
| Mauritz, Philipp | Philipp Mauritz | Actor | 2016 | 3 | |
| Marquardt, Sigrid | Sigrid Marquardt | Actor | 1952 - 1965 | 3 | |
| Moe, Marija Zlatnar | Marija Zlatnar Moe | Translator | 2010 - 2012 | 3 | |
| Moscu, Irina | Irina Moscu | Designer | 2011 - 2018 | 3 | |
| Macht, Claudia | Claudia Macht | Actor | 2015 - 2019 | 3 | |
| Mehler, Christoph | Christoph Mehler | Director | 2013 - 2017 | 3 | 1 |
| Mollenhauer, Wiebke | Wiebke Mollenhauer | Actor | 2011 - 2013 | 3 | |
| Murschetz, Annette | Annette Murschetz | Designer | 2012 - 2014 | 3 | 1 |
| Muggli, Natalina | Natalina Muggli | Actor | 2016 | 3 | |
| Mackenbrock, Tim | Tim Mackenbrock | Actor | 2016 | 3 | |
| McArdle, James | James McArdle | Actor | 2011 - 2019 | 3 | 1 |
| Mărutză, George | George Mărutză | Actor | 1932 - 1956 | 3 | |
| Masterson, Carl | Carl Masterson | Actor | 2016 - 2020 | 3 | |
| Munso, Felix | Felix Munso | Actor | 1963 - 1964 | 3 | |
| Mower, Patrick | Patrick Mower | Actor | 1963 - 1976 | 3 | |
| McCarthy, Michael | Michael McCarthy | Composer, Dramaturg | 2012 - 2020 | 3 | 1 |
| Murray, June | June Murray | Actor | 1957 - 1961 | 3 | |
| Mousouri, Rita | Rita Mousouri | Actor | 1961 - 1990 | 3 | |
| Mitchel, Charles | Charles Mitchel | Actor | 1947 - 1961 | 3 | |
| McDermott, Gerard | Gerard McDermott | Actor | 2011 - 2023 | 3 | |
| Michaels, Jeremy | Jeremy Michaels | Actor, Composer | 2011 - 2013 | 3 | |
| Mestrovic, Sarah | Sarah Mestrovic | Actor | 2011 | 3 | |
| Manni, Nicoletta | Nicoletta Manni | Actor | 2011 | 3 | |
| Munoz, Natalia | Natalia Munoz | Actor | 2011 | 3 | |
| Males, Sacha | Sacha Males | Actor | 2011 | 3 | |
| Medina, Luke | Luke Medina | Actor | 2013 - 2023 | 3 | |
| McLaughlin, William | William McLaughlin | Actor | 1959 | 3 | |
| Meyer, Roald | Roald Meyer | Actor | 1954 - 1958 | 3 | |
| Murphy, Brian | Brian Murphy | Actor | 1958 | 3 | |
| Matthiessen, Ingrid | Ingrid Matthiessen | Actor | 1956 - 2003 | 3 | |
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