- Missouri State Music Teachers Association1
- Mitropoulos, Dimitri, 1896-19601
- Moiseiwitsch, Anna1
- Moore, Dick1
- Morrison, John D.1
- Moseley, Elise1
- Moynihan, Agnes1
- Music Educators Association of New Jersey1
- Music Teachers National Association1
- Musicians' Foundation1
- National Federation of Music Clubs1
- National Schools of Music1
- National Symphony Orchestra (Washington, D.C.)1
- Neuman, Herman1
- New York Orchestral Society1
- New York University. Hall of Fame for Great Americans1
- Ney, Elly, 1882-19681
- Nikolaidi, Elena, 1909-20021
- Nordlinger, H. H.1
- Oarr, Dwight1