Name
- Masius and Fergusson Ltd., advertising agency, fl 19561
- Melcons Electric Corporation, fl 19561
- Mende, Erwin, of Heinrichhofen's Verlag, Wilhelmshaven, fl 1956-19601
- Menuhin, Yehudi, Baron Menuhin of Stoke d'Abernon, violinist, 1916-19991
- Meulenhoff, of Amsterdam; music dealers, 1895-1
- Mooser, Robert-Aloys, musicologist and music critic, 1876-19691
- Motta, Virginia, correspondent of Boosey and Hawkes Ltd., fl 19561
- Music Publishers' Association, United Kingdom, 1881-1
- Musicians' Union, United Kingdom, 1921-1
- Musička Naklada, music publishing house, of Zagreb, fl 1956-19591
- Möseler Verlag, of Wolfenbüttel; music publishers, fl 1954-19591
- Müller und Schade, of Bern; Swiss music publishers, 18501
- Oxford University Press, University of Oxford, 1486-1
- Pianohaus Jecklin, music dealers of Zürich, fl 1947-19511
- Ricketts, Frederick Joseph, alias Kenneth Alford; composer, 1881-19451
- Sven Larssons, music publishers of Norway, fl 1956-19581
- Vogel, Gervisa, musicologist, fl 19561