| Myridou, Veta | Veta Myridou | Musical Director | 1975 | 4 | |
| Murray, Eden | Eden Murray | Actor | 1975 | 1 | |
| Meaubert, Henriette | Henriette Meaubert | Actor | 1878 | 1 | |
| Mainer, David | David Mainer | Actor | 1979 | 1 | |
| Mondanaro, Julie | Julie Mondanaro | Actor | 1979 | 1 | |
| McWeeny, Jim | Jim McWeeny | Actor | 1979 | 1 | |
| Marshall, Gregory | Gregory Marshall | Actor | 1979 | 1 | |
| MacQueen, Brian | Brian MacQueen | Actor | 1979 | 1 | |
| Murphy, Susan | Susan Murphy | Actor | 1979 | 1 | |
| Meyer, - | - Meyer | Actor | 1878 | 1 | |
| Meulman, Bea | Bea Meulman | Actor | 1976 - 1979 | 2 | |
| Manolidou, Vaso | Vaso Manolidou | Actor | 1933 - 1979 | 11 | |
| Makris, Stelios | Stelios Makris | Musical Director | 1977 | 1 | |
| Matesis, Pavlos | Pavlos Matesis | Translator | 1976 - 1989 | 6 | |
| Mortensen, Magnus, Young | Magnus Young Mortensen | Actor | 2014 - 2017 | 5 | |
| Magnússon, Guðmundur | Guðmundur Magnússon | Actor | 1975 | 1 | |
| Magnússon, Gunnar | Gunnar Magnússon | Actor | 1975 | 1 | |
| Magnusson, Ann-Christine | Ann-Christine Magnusson | Actor | 1979 | 1 | |
| McGee, Sian | Sian McGee | Actor | 1979 | 1 | |
| Mago, - | - Mago (Max Goldstein) | Costume Designer, Designer | 1964 - 1979 | 9 | |
| Mavromatis, Vasilis | Vasilis Mavromatis | Actor | 1972 | 1 | |
| Macdonald, Mickey | Mickey Macdonald | Actor | 1972 | 1 | |
| Martin, Reeve | Reeve Martin | Actor | 1972 | 1 | |
| Martin, Michael | Michael Martin | Actor | 1972 | 1 | |
| Meußling, Sabine | Sabine Meußling | Actor | 2013 - 2014 | 3 | |
| Mikołajska, Halina | Halina Mikołajska | Actor | 1975 - 1981 | 2 | |
| Mrozowska, Zofia | Zofia Mrozowska | Actor | 1975 | 1 | |
| Musiałek, Teresa | Teresa Musiałek (Teresa Musialek) | Actor | 1975 | 1 | |
| Michalewski, Romuald | Romuald Michalewski | Actor | 1975 | 1 | |
| May, Andrzej | Andrzej May | Actor | 1973 | 1 | |
| May, Ena | Ena May | Actor | 1973 | 1 | |
| Mixa, Josef | Josef Mixa | Actor, Director | 1964 - 1990 | 7 | |
| Marshall, Peggy | Peggy Marshall | Actor | 1975 - 1979 | 3 | |
| McKee, Lorraine | Lorraine McKee | Costume Designer | 1972 | 6 | |
| Mendl, Michael | Michael Mendl | Actor | 1972 - 1973 | 2 | |
| Macready, Susan | Susan Macready | Actor | 1972 | 6 | |
| Martin, Trevor | Trevor Martin | Actor | 1975 | 1 | |
| Metzner, Hildegard | Hildegard Metzner | Actor | 1973 | 1 | |
| Mücke, Annelies | Annelies Mücke | Actor | 1961 - 1973 | 3 | |
| Mittreiter, Kurt | Kurt Mittreiter | Costume Designer, Designer | 1967 - 1973 | 4 | |
| Menachem, Zak Menachem | Zak Menachem Menachem | Musical Director | 1979 | 1 | |
| Matache, Ica | Ica Matache | Actor | 1957 - 1975 | 2 | |
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