| Marquardt, Helen | Helen Marquardt | Actor | 1966 | 1 | |
| Maurstad, Alfred | Alfred Maurstad | Actor, Director | 1934 - 2006 | 31 | |
| Mitchell, Irene | Irene Mitchell | Director | 1966 | 1 | |
| McGill, Robert, E. | Robert E. McGill | Actor | 1966 | 1 | |
| Marchese, Paula | Paula Marchese | Actor | 1966 | 1 | |
| Metzger, Lynn | Lynn Metzger | Actor | 1966 | 1 | |
| Marcin, Marilyn | Marilyn Marcin | Actor | 1966 | 1 | |
| Marsh, James | James Marsh | Actor | 1966 | 1 | |
| Marsh, James | James Marsh | Actor, Dancer | 1966 | 2 | |
| McGilliard, George | George McGilliard | Dancer | 1966 | 1 | |
| Metcalf, Mark | Mark Metcalf | Dancer | 1966 | 1 | |
| Moore, William, A. | William A. Moore | Actor | 1948 - 1966 | 4 | |
| Miaka, Stephen | Stephen Miaka | Musician | 1966 | 1 | |
| Michekoff, Matthew | Matthew Michekoff | Musician | 1966 | 1 | |
| Mehlkopf, Hermann | Hermann Mehlkopf | Costume Designer | 1966 | 1 | |
| Malewski, Ursula | Ursula Malewski | Actor | 1966 | 1 | |
| McAndrew, Pat | Pat McAndrew | Actor | 1966 | 1 | |
| Metaxa, Argyro | Argyro Metaxa | Composer | 1961 - 1997 | 12 | |
| Manhardt, Eva | Eva Manhardt | Actor | 1966 | 2 | |
| Miron, Dan | Dan Miron | Translator | 1966 | 1 | |
| Mor, Avraham | Avraham Mor | Actor | 1966 | 1 | |
| Martius, Brigitte | Brigitte Martius | Actor | 1966 | 1 | |
| Mergel, Heiner | Heiner Mergel | Actor | 1966 | 1 | |
| McGregor, Patricia | Patricia McGregor | Actor | 1966 | 1 | |
| Maldek, Karl | Karl Maldek | Actor | 1965 - 1966 | 2 | |
| Mendonça, J. Luiz | J. Luiz Mendonça | Actor | 1966 | 1 | |
| Morais, Irene | Irene Morais | Actor | 1966 | 1 | |
| Matioski, Gladyston, Roberto | Gladyston Roberto Matioski | Actor | 1966 | 1 | |
| Magno, Esmeralda | Esmeralda Magno | Actor | 1966 | 1 | |
| Menghini, Maria | Maria Menghini | Actor | 1966 | 1 | |
| Masset, Valerie | Valerie Masset | Actor | 1966 | 1 | |
| Majcenovic, Georg | Georg Majcenovic | Actor | 1966 | 1 | |
| Majewski, Hans-Martin | Hans-Martin Majewski | Composer | 1966 | 1 | |
| Maier, Gerd | Gerd Maier | Dancer | 1966 | 1 | |
| Matthes, Georg | Georg Matthes | Actor | 1966 | 1 | |
| Meinecke, Otto Hans | Otto Hans Meinecke | Actor | 1966 - 1989 | 4 | |
| Manhardt, Peter | Peter Manhardt | Costume Designer, Designer | 1966 | 2 | |
| Manning, Ferd | Ferd Manning | Lighting Designer | 1966 | 1 | |
| Martsch, Günter, Erich | Günter Erich Martsch | Actor | 1964 - 1966 | 2 | |
| Mazal, Mr. | Mr. Mazal | Actor | 1881 | 1 | |
| Musser, Tharon | Tharon M. Musser | Lighting Designer | 1949 - 1965 | 4 | |
| Mihula, Richard | Richard Mihula | Adaptation, Director | 1965 | 2 | |
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