| Moore, John | John Moore (John Moore) | Actor | 1957 - 1962 | 2 | |
| Medo, Hans | Hans Medo | Actor | 1957 - 1963 | 2 | |
| Meyer, Ernst | Ernst Meyer | Actor | 1957 - 1966 | 2 | |
| 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 | |
| Mureşan, Lucia | Lucia Mureşan | Actor | 1957 - 1979 | 2 | |
| Millot, Charles | Charles Millot (Charles Millot) | Actor | 1957 - 1980 | 3 | |
| Møller, Paul | Paul Møller | Actor | 1957 - 1983 | 2 | |
| Müller, Erno | Erno Müller (Erno Müller) | Actor | 1957 - 1985 | 11 | |
| Moritzen, Henning | Henning Moritzen (Henning Moritzen) | Actor | 1957 - 2000 | 5 | |
| Melichar, Rudolf | Rudolf Melichar (Rudolf Melichar) | Actor | 1957 - 2010 | 6 | |
| Moan, Henny | Henny Moan (Henny Moan) | Actor | 1957 - 2013 | 64 | |
| Małynicz, Zofia | Zofia Małynicz (Zofia Małynicz) | Actor | 1958 | 1 | |
| Merk, Romano | Romano Merk (Romano Merk) | Actor | 1958 | 1 | |
| Moitra, Arati | Arati Moitra (Arati Moitra) | Actor | 1958 | 1 | |
| Matsuda, Takashi | Takashi Matsuda (Takashi Matsuda) | Designer | 1958 | 1 | |
| Mihajlov, Mihail | Mihail Mihajlov | Actor | 1958 | 1 | |
| Márkus, Ferenc | Ferenc Márkus | Actor | 1958 | 1 | |
| Mardik, Ian | Ian Mardik | Actor | 1958 | 1 | |
| Miunes, Stephen | Stephen Miunes | Actor | 1958 | 1 | |
| Maffeo, Dominic | Dominic Maffeo | Actor | 1958 | 1 | |
| Manning, James | James Manning | Actor | 1958 | 1 | |
| Medioni, Marie-Jeanne | Marie-Jeanne Medioni | Actor | 1958 | 4 | |
| Marrero, Frank | Frank Marrero | Actor | 1958 | 1 | |
| Moss, David | David Moss | Actor | 1958 | 1 | |
| Martino, Fábia | Fábia Martino | Actor | 1958 | 1 | |
| McDonald, Hugh | Hugh McDonald | Actor | 1958 | 1 | |
| McDonald, Peg | Peg McDonald | Actor | 1958 | 1 | |
| Mayhew, Derek | Derek Mayhew | Actor | 1958 | 1 | |
| Murphy, Brian | Brian Murphy | Actor | 1958 | 3 | |
| Mountain, Michael | Michael Mountain | Actor | 1958 | 1 | |
| May, Myfanwy | Myfanwy May | Actor | 1958 | 1 | |
| McSharry, Carmel | Carmel McSharry | Actor | 1958 | 1 | |
| Meißner, Alexander | Alexander Meißner | Choreographer | 1958 | 1 | |
| Marschitz, Kurt | Kurt Marschitz | Actor | 1958 | 1 | |
| Morawetz, Wolfgang | Wolfgang Morawetz | Actor | 1958 | 1 | |
| Makula, Lisa | Lisa Makula | Actor | 1958 | 1 | |
| Mair, Hermann | Hermann Mair | Actor | 1958 | 1 | |
| Milton, Martha | Martha Milton | Actor | 1958 | 1 | |
| Maillard, Josephine | Josephine Maillard | Actor | 1958 | 1 | |
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