| Mandel, Ellen | Ellen Mandel | Composer | 1994 – 1995 | 2 | |
| Martinig, Aldo | Aldo Martinig | Composer | 1984 | 1 | |
| Marzewski, Lucjan | Lucjan Marzewski | Composer | 1989 | 1 | |
| Mazzocchetti, Germano | Germano Mazzocchetti | Composer | 1993 – 2013 | 20 | |
| McCracken, Everett | Everett McCracken | Composer | 1928 | 2 | |
| Merz, Horst | Horst Merz | Composer | 1992 | 1 | |
| Migliardi, Mario, | Mario Migliardi | Composer | 1974 | 2 | |
| Mufti, Uns, | Uns Mufti | Composer | 2006 – 2012 | 4 | |
| Mezzacappo, E | E Mezzacappo | Composer | 1937 | 1 | |
| Mikula-Proksa, Marzena | Marzena Mikula-Proksa | Composer | 1979 | 1 | |
| Meyerbeer, -, | - Meyerbeer | Composer | 1892 | 1 | |
| Mascagni, -, | - Mascagni | Composer | 1892 | 1 | |
| Michiels, -, | - Michiels | Composer | 1892 | 1 | |
| Ming-chu, Maggie Shum | Maggie Shum Ming-chu | Composer | 2001 | 1 | |
| Maćkowiak, Janusz | Janusz Maćkowiak | Composer | 1957 | 1 | |
| Madzharov, Nikolaj | Nikolaj Madzharov | Composer | 2006 – 2008 | 1 | |
| Mullin, Bronwen | Bronwen Mullin | Composer | 2011 | 1 | |
| Milner, Johnny | Johnny Milner | Composer | 2007 | 1 | |
| Monteiro, Bruno | Bruno Monteiro | Composer | 2009 | 1 | |
| Müller, Maximilian | Maximilian Müller | Composer | 2010 | 8 | |
| Mozart, Wolfgang Amadeus, | Wolfgang Amadeus Mozart | Composer | 1879 – 2007 | 7 | |
| Mendelssohn-Bartholdy, Felix, | Felix Mendelssohn-Bartholdy | Composer | 1879 – 1914 | 18 | |
| Moszkowsky, Moritz, | Moritz Moszkowsky | Composer | 1885 | 3 | |
| Møller, C.E., | C. E. Møller (C.E. Møller) | Composer | 1889 | 1 | |
| Mendelssohn, Arnold Ludwig, | Arnold Ludwig Mendelssohn | Composer | 1898 | 1 | |
| Massenet, Jules, | Jules Massenet | Composer | 1900 | 4 | |
| Moskowski, Moritz, | Moritz Moskowski | Composer | 1910 | 1 | |
| Mahler, Gustav, | Gustav Mahler | Composer | 1979 – 1996 | 10 | |
| Moe, Ole Henrik, | Ole Henrik Moe | Composer | 1996 – 2006 | 2 | |
| Morricone, -, | - Morricone | Composer | 2004 – 2005 | 2 | |
| Moe, Bodvar, | Bodvar Moe | Composer | 2004 | 1 | |
| Molvær, Nils Petter, | Nils Petter Molvær | Composer | 2005 – 2020 | 62 | |
| Moxnes, Andreas, | Andreas Moxnes | Composer | 2006 | 1 | |
| Mathisen, Hans, | Hans Mathisen | Composer | 2007 | 1 | |
| Meland, Andreas, | Andreas Meland | Composer | 2008 – 2010 | 4 | |
| Myhr, Eirik, | Eirik Myhr | Composer | 2012 – 2018 | 4 | |
| Márkos, Albert | Albert Márkos | Composer | 2007 – 2011 | 6 | |
| Mandel, Petr | Petr Mandel | Composer | 1990 | 2 | |
| Massara, Pino | Pino Massara | Composer | 1975 – 1976 | 3 | |
| Miereanu, Costin | Costin Miereanu | Composer | 1981 | 1 | |
| Moss, Piotr | Piotr Moss | Composer | 1979 – 2012 | 2 | |
| Murdoch, Alan | Alan Murdoch | Composer | 1983 | 2 | |
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