| Mendoza, Fernando | Fernando Mendoza | Actor | 1964 | 1 | |
| Méndez, Alfredo | Alfredo Méndez | Actor | 1964 | 1 | |
| Millán, Claudia | Claudia Millán | Actor | 1964 | 1 | |
| Montiel, Jesús | Jesús Montiel | Actor | 1964 | 1 | |
| Methling, Jan | Jan Methling | Actor | 1964 | 1 | |
| Moss, Raymond | Raymond Moss | Actor | 1964 | 1 | |
| Mikellatos, Alexandra | Alexandra Mikellatos | Actor | 1964 | 1 | |
| McDowell, Myles | Myles McDowell | Actor | 1964 | 1 | |
| Marković, Zvonimir | Zvonimir Marković | Actor | 1964 | 1 | |
| Margetić, Vera | Vera Margetić | Actor | 1964 | 1 | |
| Makov, V. | V. Makov | Designer | 1964 | 1 | |
| Moszkowicz, Imo | Imo Moszkowicz | Director | 1964 - 1965 | 4 | |
| Mitsakis, Vasilis | Vasilis Mitsakis | Actor | 1964 - 1965 | 2 | |
| Marsh, Keith | Keith Marsh | Actor | 1964 - 1965 | 5 | |
| Mugur, Vlad | Vlad Mugur | Director | 1964 - 1965 | 2 | |
| Mottoi, George | George Mottoi | Actor | 1964 - 1965 | 2 | |
| Martsch, Günter, Erich | Günter Erich Martsch | Actor | 1964 - 1966 | 2 | |
| Mann, Ellika | Ellika Mann | Actor | 1964 - 1968 | 4 | |
| Maattola, Inke | Inke Maattola | Actor | 1964 - 1969 | 2 | |
| Margulies, Armand | Armand Margulies | Actor | 1964 - 1970 | 2 | |
| Mantius, Karlheinz | Karlheinz Mantius | Actor | 1964 - 1973 | 2 | |
| Mason, Marshall W. | Marshall W. Mason | Director, Lighting Designer | 1964 - 1973 | 2 | |
| Muceniece, Ilga | Ilga Muceniece | Actor | 1964 - 1975 | 2 | |
| Munk, Holger | Holger Munk | Actor | 1964 - 1978 | 2 | |
| Mago, - | - Mago (Max Goldstein) | Costume Designer, Designer | 1964 - 1979 | 9 | |
| Matschoss, Ulrich, | Ulrich Matschoss | Actor | 1964 - 1980 | 5 | |
| Marcell, Peter | Peter Marcell | Actor | 1964 - 1983 | 3 | |
| Mixa, Josef | Josef Mixa | Actor, Director | 1964 - 1990 | 7 | |
| Munzar, Ludĕk | Ludĕk Munzar | Actor | 1964 - 1994 | 11 | |
| Musäus, Peter | Peter Musäus | Actor | 1964 - 2015 | 3 | |
| Morris, Brid | Brid Morris | Actor | 1965 | 1 | |
| Murphy, Alfie | Alfie Murphy | Actor | 1965 | 1 | |
| Murtagh, Paddy | Paddy Murtagh | Actor | 1965 | 1 | |
| Moskowicz, Imo | Imo Moskowicz | Director | 1965 | 1 | |
| Mihula, Richard | Richard Mihula | Adaptation, Director | 1965 | 2 | |
| Miláčková, Eva | Eva Miláčková | Actor | 1965 | 1 | |
| Mayerová, Carmen | Carmen Mayerová | Actor | 1965 | 2 | |
| Maertens, Willy | Willy Maertens | Actor | 1965 | 1 | |
| Matson, Mary Lou | Mary Lou Matson | Costume Designer | 1965 | 1 | |
| Morton, Joseph | Joseph Morton | Designer | 1965 | 1 | |
| Medschinski, Ingeborg | Ingeborg Medschinski | Actor | 1965 | 1 | |
| Meyer, Siegfried | Siegfried Meyer | Actor | 1965 | 1 | |
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