| Mulgrew, Kate | Kate Mulgrew | Actor | 1986 | 1 | |
| McCarthy, Julianna | Julianna McCarthy | Actor | 1986 | 1 | |
| Marttinen, Pentti | Pentti Marttinen | Actor | 1985 | 1 | |
| Morrissey, Michael | Michael Morrissey | Actor | 1986 | 1 | |
| Mayo, Andrew | Andrew Mayo | Lighting Designer, Sound Designer | 1986 | 2 | |
| Meisaari-Toiviainen, Tuula | Tuula Meisaari-Toiviainen | Actor | 1985 | 1 | |
| Morschheuser, Peter | Peter Morschheuser | Actor | 1911 | 1 | |
| Münzer, Florian | Florian Münzer | Actor | 1985 | 5 | |
| MacEnulty, David | David MacEnulty | Actor | 1970 | 1 | |
| Miner, Michael, Andrew | Michael Andrew Miner | Actor | 1970 | 1 | |
| Mitterer, Susanne | Susanne Mitterer | Actor | 1985 - 2006 | 4 | |
| Marcellos, Melinda | Melinda Marcellos | Actor | 1985 | 1 | |
| McAskill, Mark | Mark McAskill | Actor | 1985 | 1 | |
| Mill, Jonathan | Jonathan Mill | Actor | 1985 | 1 | |
| Mitchell, Bob | Bob Mitchell | Designer | 1985 | 1 | |
| Mannoni, Paola | Paola Mannoni | Actor | 1960 - 1986 | 5 | |
| Mader, Leonhard | Leonhard Mader | Actor | 1985 | 4 | |
| Masuch, Bettina | Bettina Masuch | Actor | 1985 | 1 | |
| Mikat, Annette | Annette Mikat | Actor | 1985 | 1 | |
| Matoušek, Mirko | Mirko Matoušek | Actor | 1985 | 1 | |
| Matoušková, Zora | Zora Matoušková | Actor | 1985 | 3 | |
| Milfajt, Jaroslav | Jaroslav Milfajt | Designer | 1985 | 1 | |
| Mikotová, Zoja | Zoja Mikotová | Choreographer | 1985 | 1 | |
| Mariano, Gertrud | Gertrud Mariano | Actor | 1985 | 1 | |
| Mariano, Gabriella | Gabriella Mariano | Actor | 1985 | 1 | |
| Meyer, Conny, Hannes | Conny Hannes Meyer | Adaptation, Director | 1985 | 2 | |
| Moretti, Tobias | Tobias Moretti | Actor | 1985 - 1986 | 6 | |
| Matheson, Eve | Eve Matheson | Actor | 1986 | 1 | |
| Mayer, Hanno | Hanno Mayer | Actor | 1985 | 1 | |
| Maertens, Kai | Kai Maertens | Actor | 1985 | 2 | |
| Maertens, Peter | Peter Maertens | Actor, Director | 1966 - 1994 | 6 | |
| Mahlich, Holger | Holger Mahlich | Actor | 1985 | 1 | |
| Martin, Mario | Mario Martin | Actor | 1985 | 1 | |
| Manzaneque, Manuel | Manuel Manzaneque | Director | 1975 - 1985 | 2 | |
| Malec, Andrzej | Andrzej Malec | Actor | 1986 | 1 | |
| Myska, Edward | Edward Myska | Director | 1986 | 1 | |
| Mottl, Erika | Erika Mottl | Actor | 1963 - 1985 | 2 | |
| Mazurczak, Janusz | Janusz Mazurczak | Designer | 1986 | 1 | |
| Menrad, Karl | Karl Menrad | Actor | 1985 - 1990 | 2 | |
| Maier, Henriette | Henriette Maier | Actor | 1980 - 1985 | 4 | |
| Matysik, Ferdynand | Ferdynand Matysik | Actor | 1986 | 1 | |
| Moen, Øystein | Øystein Moen | Musician | 2014 - 2015 | 2 | |
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