| 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 | |
| Morin, Pierre | Pierre Morin | Actor | 1933 | 3 | |
| Manta, Ion | Ion Manta | Actor | 1943 - 1976 | 3 | |
| Masson, Gust | Gust Masson | Mask Maker | 1956 - 1957 | 3 | |
| Maeremans, G. | G. Maeremans | Actor | 1956 - 1957 | 3 | |
| Mertens, J. | J. Mertens | Actor | 1956 - 1957 | 3 | |
| Mercs, Ēvalds | Ēvalds Mercs | Actor, Director | 1941 - 1956 | 3 | |
| Malmberg, Otto | Otto Malmberg | Actor | 1952 - 1955 | 3 | |
| Merkouri, Melina | Melina Merkouri | Actor | 1949 - 1955 | 3 | |
| Müller, Hans Bernd | Hans Bernd Müller | Director | 1953 | 3 | |
| Martienzen, Gerd | Gerd Martienzen | Actor | 1953 | 3 | |
| Miller, Joan | Joan Miller | Actor | 1945 - 1952 | 3 | |
| Mjøen, Jon, Lennart | Jon Lennart Mjøen | Actor | 1942 - 2006 | 3 | |
| Markus, Sami | Sami Markus | Actor | 1998 | 3 | |
| Morgan, Miles | Miles Morgan | Actor, Lighting Designer | 1949 - 1950 | 3 | |
| Mayne, Ronald | Ronald Mayne | Actor | 1960 | 3 | |
| Madison, Deborah | Deborah Madison | Actor | 1963 | 3 | |
| Metsar, Ester | Ester Metsar | Actor | 1962 | 3 | |
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