| Mestrez, Hubert | Hubert Mestrez (Hubert Mestrez) | Actor | 1975 - 1977 | 10 | |
| Minkus, Hannelore | Hannelore Minkus (Hannelore Minkus) | Actor | 1953 - 1954 | 4 | |
| Mayer, José | José Mayer (José Mayer) | Actor | 1994 - 2002 | 2 | |
| Mendes, Cássio Gabus | Cássio Gabus Mendes (Cássio Gabus Mendes) | Actor | 2002 | 1 | |
| Merő, Béla | Béla Merő (Béla Merő) | Director | 2005 - 2010 | 2 | |
| Mira, János | János Mira (János Mira) | Designer | 2010 | 1 | |
| Müller, Margarethe | Margarethe Müller (Margarethe Müller) | Actor | 1895 - 1897 | 3 | |
| Müller, Emmy | Emmy Müller (Emmy Müller) | Actor | 1893 - 1897 | 3 | |
| Müller, Lolo | Lolo Müller (Lolo Müller) | Actor | 1896 - 1897 | 2 | |
| Merten, Claudius | Claudius Merten (Claudius Merten) | Actor | 1889 - 1907 | 4 | |
| Müller, Trude | Trude Müller (Trude Müller) | Actor | 1895 | 1 | |
| Mietens, Pia | Pia Mietens (Pia Mietens) | Actor | 1932 - 1941 | 3 | |
| Mayer, Murphy | Murphy Mayer (Murphy Mayer) | Actor | 2011 | 1 | |
| Martin, William | William Martin (William Martin) | Sound Designer | 2011 | 1 | |
| Moriau, Stephanie | Stephanie Moriau (Stephanie Moriau) | Actor | 2011 | 1 | |
| Moses, Carina | Carina Moses (Carina Moses) | Actor | 2009 - 2011 | 2 | |
| Musician, Tim | Tim Musician (Tim Musician) | | | | |
| Macdougall, Irene | Irene Macdougall (Irene Macdougall) | Actor | 2007 - 2010 | 25 | |
| McNair, Leon | Leon McNair (Leon McNair) | Actor | 2010 | 1 | |
| Macaulay, Lema | Lema Macaulay (Lema Macaulay) | Actor | 2010 | 1 | |
| Masini, Antonella | Antonella Masini (Antonella Masini) | Actor | 1999 | 1 | |
| Msuku, Bennie | Bennie Msuku (Bennie Msuku) | Actor | 2006 | 22 | |
| Maloya, Chimwemwe | Chimwemwe Maloya (Chimwemwe Maloya) | Actor | 2006 | 4 | |
| Markström, Matilda | Matilda Markström (Matilda Markström) | Actor | 2007 | 1 | |
| Mitle, Max | Max Mitle (Max Mitle) | Lighting Designer | 2004 - 2013 | 3 | |
| Mikkola, Juhani | Juhani Mikkola (Juhani Mikkola) | Lighting Designer | 1981 - 1995 | 2 | |
| Manto, Erja | Erja Manto (Erja Manto) | Actor | 1992 - 1994 | 2 | |
| Minna, - | - Minna (- Minna) | Actor | 1881 | 1 | |
| Mundell, Jacob | Jacob Mundell (Jacob Mundell) | Actor | 2011 | 1 | |
| Mirowski, Malvina | Malvina Mirowski (Malvina Mirowski) | Actor | 2011 | 1 | |
| Margot, Hedwig | Hedwig Margot (Hedwig Margot) | Actor | 1896 - 1908 | 26 | |
| Makar, Valentin | Valentin Makar (Valentin Makar) | Actor | 2004 | 1 | |
| Myren, Eivind | Eivind Myren (Eivind Myren) | Lighting Designer | 2010 - 2020 | 60 | |
| Matthíasson, Ari | Ari Matthíasson (Ari Matthíasson) | Actor | 1993 | 2 | |
| Müller, Eva Verena | Eva Verena Müller (Eva Verena Müller) | Actor | 2011 - 2012 | 2 | |
| Mackert, Pia Maria | Pia Maria Mackert (Pia Maria Mackert) | Costume Designer, Designer | 2011 - 2022 | 11 | |
| Morris, Bea | Bea Morris (Bea Morris) | Actor | 1972 | 1 | |
| Mooney, Kristin | Kristin Mooney (Kristin Mooney) | Actor | 1972 | 1 | |
| Modereger, Jeff | Jeff Modereger (Jeff Modereger) | Designer | 2010 | 1 | |
| Mylonas, Niki | Niki Mylonas (Niki Mylonas) | Actor | 2011 | 1 | |
| Marshall, Caleb | Caleb Marshall (Caleb Marshall) | Actor, Director | 2011 | 4 | |
| Miller, Gordon | Gordon Miller (Gordon Miller) | Actor | 2011 | 2 | |
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