| Magno, Rosa, Carlos | Rosa Carlos Magno | Costume Designer | 1952 - 1956 | 2 | |
| Molitor, Marion | Marion Molitor | Actor | 1956 | 1 | |
| Moog, Willy | Willy Moog | Director | 1953 - 1960 | 3 | |
| McCloskey, Michael | Michael McCloskey | Lighting Designer | 1956 | 1 | |
| Malone, Anne | Anne Malone | Actor | 1956 | 1 | |
| Marlowe, Margaret | Margaret Marlowe | Actor | 1956 | 1 | |
| Mcguinne, Sibeal | Sibeal Mcguinne | Actor | 1992 | 1 | |
| Major, Pamela | Pamela Major | Actor | 1992 - 2015 | 2 | |
| Manley, Donna | Donna Manley | Actor | 1992 | 1 | |
| Marques, António | António Marques | Actor | 1992 - 2015 | 2 | |
| Mickey, Susan E. | Susan E. Mickey | Costume Designer | 1992 | 1 | |
| Müller, Rudolf | Rudolf Müller | Sound Designer | 1992 | 1 | |
| Mounsey, Gordon | Gordon Mounsey | Actor | 1992 - 1994 | 2 | |
| Murnin, Michael J. | Michael J. Murnin | Designer, Lighting Designer | 1992 | 2 | |
| Mol, Arie de | Arie de Mol | Actor, Adaptation, Director | 1992 - 2009 | 71 | |
| Müller, Günther | Günther Müller | Actor | 1992 | 1 | |
| Marmor, David | David Marmor | Actor | 1992 | 1 | |
| Muldowney, Dominic | Dominic Muldowney | Composer | 1989 - 2016 | 3 | |
| Morgenroth, Daniel | Daniel Morgenroth | Actor | 1991 | 1 | |
| Muizelaar, Titus | Titus Muizelaar | Actor, Director | 1971 - 1992 | 4 | |
| Minnen, Peter van | Peter van Minnen | Producer | 1992 | 1 | |
| Manz, Horst | Horst Manz | Actor | 1959 - 1991 | 3 | |
| Move, Richard | Richard Move | Actor | 1992 | 1 | |
| Marggraf, Erhard | Erhard Marggraf | Actor | 1991 - 2003 | 12 | |
| Maksimović, Boris | Boris Maksimović | Designer | 1989 - 1991 | 2 | |
| Mitev, Slavtscho | Slavtscho Mitev | Actor | 1971 - 1988 | 4 | |
| McKern, Leo | Leo McKern | Actor | 1962 - 1988 | 3 | |
| Machalica, Piotr | Piotr Machalica | Actor | 1991 - 1997 | 2 | |
| Myerscough-Jones, David | David Myerscough-Jones | Designer | 1988 | 1 | |
| Mortlock, Joyce | Joyce Mortlock | Costume Designer | 1988 | 1 | |
| Macphail-Alexander, Laurie | Laurie Macphail-Alexander | Designer | 1991 | 1 | |
| Moss, Stella | Stella Moss | Actor | 1991 | 1 | |
| Myara, Charles | Charles Myara | Actor | 1988 - 1989 | 9 | |
| Murphy, Harry S. | Harry S. Murphy | Actor | 1992 | 1 | |
| Muirhead, Jayne | Jayne Muirhead | Actor | 1992 | 1 | |
| Meyer, Ingeborg | Ingeborg Meyer | Actor | 1992 | 1 | |
| McLane, Derek | Derek McLane | Designer | 1992 | 1 | |
| Marchael, Pamela | Pamela Marchael | Actor | 1988 | 1 | |
| Montgomery, Joy | Joy Montgomery | Actor | 1988 | 1 | |
| Masson, John | John Masson | Director | 1992 | 2 | |
| Milldoff, Kenneth | Kenneth Milldoff | Actor | 1992 - 1994 | 2 | |
| Malmquist, Dan | Dan Malmquist | Composer | 1992 | 1 | |
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