| Mazzoleni, Ettore | Ettore Mazzoleni | Musical Director | 1930 | 1 | |
| Momber, Ernst | Ernst Momber | Musical Director | 1970 | 1 | |
| Maliniak, Georg | Georg Maliniak | Musical Director | 1923 | 1 | |
| Marić, Veljko | Veljko Marić | Musical Director | 1975 | 1 | |
| Madaras, Gergely | Gergely Madaras | Musical Director | 2014 | 1 | |
| Muschinski , Uwe | Uwe Muschinski | Musical Director | | 1 | |
| Moreno, María de los Ángeles | María de los Ángeles Moreno | Musical Director | 1965 | 1 | |
| Menéndez, Gerardo | Gerardo Menéndez | Musical Director | 1978 | 1 | |
| Moukarzel, Ziad | Ziad Moukarzel | Musical Director | 2023 | 4 | |
| Mánik, László | László Mánik | Mask Maker | 1961 - 1969 | 2 | |
| Myers, Roland | Roland Myers | Mask Maker | 1963 | 1 | |
| Melin, Anna-Lena | Anna-Lena Melin | Mask Maker | 1999 | 1 | |
| Marø, Anita Jacobsen | Anita Jacobsen Marø | Mask Maker | 2011 | 6 | |
| Mortensen, Aud | Aud Mortensen | Mask Maker | 1978 | 3 | |
| Müller, Thomas | Thomas Müller | Mask Maker | 2010 - 2012 | 10 | 4 |
| Mußmacher, Renate | Renate Mußmacher | Mask Maker | 1986 | 1 | |
| Marcell, Bodil | Bodil Marcell | Mask Maker | 1984 | 1 | |
| Menig, Heidi | Heidi Menig | Mask Maker | 1986 | 1 | |
| Martin, Ida | Ida Martin | Mask Maker | 1986 | 1 | |
| Martinsen, Lill | Lill Martinsen | Mask Maker | 1990 | 1 | |
| Mühle, Örjan | Örjan Mühle | Mask Maker | 1991 - 1993 | 5 | |
| Mutt, Kristel | Kristel Mutt | Mask Maker | 1997 | 1 | |
| Meisinger, Inge | Inge Meisinger | Mask Maker | 2002 | 1 | |
| Marrs, Bruce | Bruce Marrs | Mask Maker | 2005 - 2006 | 9 | |
| Mars, Bruce | Bruce Mars | Mask Maker | 2006 | 10 | |
| Mosser, Ellie | Ellie Mosser | Mask Maker | 2007 | 1 | |
| Merino, Anna | Anna Merino | Mask Maker | 2008 | 15 | |
| Malik, Aruna, Kumar | Aruna Kumar Malik | Mask Maker | 2015 | 1 | |
| Michael, Peggy | Peggy Michael | Mask Maker | 2010 | 1 | |
| Mjøen, Anne | Anne Mjøen | Mask Maker | 1962 | 1 | |
| Moller, Denise | Denise Moller | Mask Maker | 1960 | 1 | |
| Magnusson, Karl | Karl Magnusson | Mask Maker | 1957 | 1 | |
| Masson, Gust | Gust Masson | Mask Maker | 1956 - 1957 | 3 | |
| Mantel, Marie | Marie Mantel | Mask Maker | 1932 | 1 | |
| Mattsson, Barbara | Barbara Mattsson | Mask Maker | 2000 | 3 | |
| Madsen, Anny, M. | Anny M. Madsen | Mask Maker | 1978 | 1 | |
| Moureaud, Claudine | Claudine Moureaud | Mask Maker | 2018 | 1 | |
| Martin, Bob | Bob Martin | Lighting Designer, Sound Designer | 1990 | 2 | |
| Mutalipassi, Loredana | Loredana Mutalipassi | Lighting Designer, Sound Designer | 2006 | 2 | |
| Martinez, Derly | Derly Martinez | Lighting Designer, Sound Designer | 1945 | 2 | |
| Mayo, Andrew | Andrew Mayo | Lighting Designer, Sound Designer | 1986 | 2 | |
| Marques, João Carlos | João Carlos Marques | Lighting Designer, Sound Designer | 1987 - 2007 | 8 | |
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