| Marcel, Robert | Robert Marcel | Actor | 1956 - 1972 | 5 | |
| Müller, Christa | Christa Müller | Actor, Costume Designer, Dramaturg | 1956 - 1980 | 3 | |
| Mihăilescu, Ion | Ion Mihăilescu | Director | 1956 - 1980 | 2 | |
| Matz, Katharina | Katharina Matz | Actor | 1956 - 1985 | 3 | |
| Müller, Ursula | Ursula Müller | Costume Designer, Dancer, Designer | 1956 - 1995 | 3 | |
| McQueen, Vincent | Vincent McQueen | Actor | 1956 - 1999 | 2 | |
| Matthiessen, Ingrid | Ingrid Matthiessen | Actor | 1956 - 2003 | 3 | |
| Maćkowiak, Janusz | Janusz Maćkowiak | Composer | 1957 | 1 | |
| Miltová, Marie | Marie Miltová | Actor | 1957 | 1 | |
| Malawski, Artur | Artur Malawski | Composer | 1957 | 1 | |
| Milski, Zygmunt | Zygmunt Milski | Actor | 1957 | 1 | |
| Markowska, Zofia | Zofia Markowska | Actor | 1957 | 1 | |
| Mărculescu, Adela | Adela Mărculescu | Actor | 1957 | 1 | |
| Moir, Alec | Alec Moir | Actor | 1957 | 2 | |
| Metcalfe, Renie | Renie Metcalfe | Actor | 1957 | 1 | |
| Malkin, B. | B. Malkin | Director | 1957 | 1 | 1 |
| Maksimova, A. | A. Maksimova | Actor | 1957 | 1 | |
| Makarov, V. | V. Makarov | Actor | 1957 | 1 | |
| Magnusson, Karl | Karl Magnusson | Mask Maker | 1957 | 1 | |
| Marsh, Reginald | Reginald Marsh | Actor | 1957 | 1 | |
| Meiggs, Amanda | Amanda Meiggs | Actor | 1957 | 1 | |
| Markov, V. | V. Markov | Actor | 1957 | 1 | |
| Matveev, E. | E. Matveev | Actor | 1957 | 1 | |
| Mirsky, Mark | Mark Mirsky | Actor | 1957 | 1 | |
| Meriläinen, Usko | Usko Meriläinen | Composer | 1957 | 1 | |
| Musceleanu, George | George Musceleanu | Actor | 1957 | 1 | |
| More O'Ferrall, George | George More O'Ferrall | Director | 1957 | 1 | |
| Maxwell, Roberta | Roberta Maxwell | Actor | 1957 | 1 | |
| Morrish, Ann | Ann Morrish | Actor | 1957 | 1 | |
| Marks, Sherman | Sherman Marks | Director | 1957 | 1 | |
| Morton, Clive | Clive Morton | Actor | 1957 - 1958 | 2 | 1 |
| Murray, June | June Murray | Actor | 1957 - 1961 | 3 | |
| Moore, John | John Moore | Actor | 1957 - 1962 | 2 | 1 |
| Medo, Hans | Hans Medo | Actor | 1957 - 1963 | 2 | 1 |
| Meyer, Ernst | Ernst Meyer | Actor | 1957 - 1966 | 2 | 1 |
| Marmeliuc, Lia | Lia Marmeliuc | Translator | 1957 - 1967 | 2 | |
| Matache, Ica | Ica Matache | Actor | 1957 - 1975 | 2 | |
| Milčin, Ilija | Ilija Milčin | Director, Translator | 1957 - 1976 | 2 | |
| McCowan, George | George McCowan | Actor, Director | 1957 - 1978 | 2 | 1 |
| Mureşan, Lucia | Lucia Mureşan | Actor | 1957 - 1979 | 2 | |
| Millot, Charles | Charles Millot | Actor | 1957 - 1980 | 3 | |
| Møller, Paul | Paul Møller | Actor | 1957 - 1983 | 2 | |
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