Name
- Bureau International de L'Édition Mécanique, 1929-2
- M. P. Belaieff, music publishers, 1885-late 20th century2
- Accademia Nazionale di Santa Cecilia, 1585-1
- Adams, David, music publisher, fl 1955-19901
- Adler, Peter Herman, conductor, 1899-1990, http://isni.org/isni/000000...1
- Albersen Muziek, Dutch music publishers, 1928-1
- American Composers' Alliance, 1937-1
- Apollo-Verlag, music publishers of Zürich, fl 1947-19591
- Aprahamian, Felix, writer on music, 1914-20051
- Ars Polona, of Warsaw; booksellers, 1953-1
- Artia, Czech publishing house, fl 1958-19671
- Artisjus, Hungarian Intellectual Property Office, 1953-1
- Ascherberg, Hopwood & Crew, Ltd., music publishers, 1906-1
- Asow, Erich Hermann, German musicologist, 1892-1964, http://isni.org/isni/000000...1
- Associated-Rediffusion Ltd., fl 19581
- Atlantis Verlag, 1930-1
- Augener, Ltd, music publishers, of London, 1853-19621
- Australasian Performing Right Association, 1926-1
- Bašić, Mladen, Croatian pianist and opera director, 1917-2012, http://isni.org/isni/000000...1
- Behncke, Richard, composer, fl 19581