| Montgomery, Mr. | Mr. Montgomery | Actor | 1892 | 3 | |
| Margetts, Monty | Monty Margetts | Actor | 1931 - 1936 | 3 | |
| McGivern, Cecil, J. | Cecil J. McGivern | Actor | 1931 - 1933 | 3 | |
| Marinakis, Giannis | Giannis Marinakis | Actor | 1931 - 1935 | 3 | |
| Matilainen, Tarja | Tarja Matilainen | Actor | 1998 | 3 | |
| Myllyselkä, Ari | Ari Myllyselkä | Actor | 1998 | 3 | |
| Muir, Douglas | Douglas Muir | Actor | 1933 - 1936 | 3 | |
| Muir, Alec | Alec Muir | Actor | 1933 - 1936 | 3 | |
| March, Elspeth | Elspeth March | Actor | 1934 - 1935 | 3 | |
| Menges, Herbert | Herbert Menges | Conductor | 1935 - 1944 | 3 | |
| Marvin, Betsy | Betsy Marvin | Actor | 1935 | 3 | |
| Maurset, Jørund | Jørund Maurset | Dancer | 1936 - 1939 | 3 | |
| Mierbeth, Gerry | Gerry Mierbeth | Choreographer, Director, Dramaturg | 1999 | 3 | |
| Maak, Jan | Jan Maak | Actor | 1999 - 2023 | 3 | |
| Misirianțu, Sorin | Sorin Misirianțu | Actor, Director, Musician | 2016 | 3 | |
| Miranda, Marina | Marina Miranda | Actor, Costume Designer, Designer | 1977 | 3 | |
| Maddox, Diana | Diana Maddox | Actor | 1944 - 1957 | 3 | |
| Marsden, Robert | Robert Marsden | Actor | 1945 | 3 | |
| Martinovic, Bojan | Bojan Martinovic | Musician | 2000 - 2001 | 3 | |
| McCleery, Albert | Albert McCleery | Director, Producer | 1947 - 1952 | 3 | |
| McGee, Marie | Marie McGee | Actor | 1947 | 3 | |
| Mattsson, Barbara | Barbara Mattsson | Mask Maker | 2000 | 3 | |
| Montijano, José | José Montijano | Actor | 1971 | 3 | |
| Martinéz, José | José Martinéz | Lighting Designer | 1971 | 3 | |
| Mazza, Hugo | Hugo Mazza | Designer | 1973 - 1976 | 3 | |
| Meyer, Ms. | Ms. Meyer | Actor | 1878 - 1893 | 3 | |
| Ma, Wenliang | Wenliang Ma | Actor | 2017 | 3 | |
| Manera, Dario | Dario Manera | Actor | 1986 - 1987 | 3 | |
| Melchthal, Juliane | Juliane Melchthal | Actor | 1986 | 3 | |
| Motta, Gilson | Gilson Motta | Adaptation, Costume Designer, Translator | 1991 | 3 | |
| Mödlinger, Elisabeth | Elisabeth Mödlinger | Actor | 1911 | 3 | |
| Mellin, Frk. | Frk. Mellin | Actor | 1880 | 3 | |
| Martini, Sig.ra | Sig.ra Martini | Actor | 1940 | 3 | |
| Maltese, C. | C. Maltese | Actor | 1940 | 3 | |
| Moscardi, N. | N. Moscardi | Actor | 1940 | 3 | |
| Margenest, Paul | Paul Margenest | Actor | 2018 | 3 | |
| Marzouk, Jean | Jean Marzouk | Actor, Director | 2018 | 3 | |
| Mayson, Jacob | Jacob Mayson | Designer | 1874 - 1876 | 3 | |
| MORI, Mitsuya | Mitsuya MORI | Translator | 2018 | 3 | |
| Moreira, Edgardo | Edgardo Moreira | Actor, Adaptation | 2018 | 3 | |
| McDermott, Chris | Chris McDermott | Actor | 1969 | 3 | |
| Martinez, Clive | Clive Martinez | Actor | 1969 | 3 | |
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