Name
- A. J. Clemo, lithographic printer, fl 19581
- A. L. Tonika, of Bergen, Norway; music publishers, fl 1954-19603
- A.v.d. Kleyn, Dutch music publishers, fl 1943-19451
- ALMO, Belgian stage rental firm and copyright agency, fl 1945-196111
- Abel, Fritz, correspondent of Boosey & Hawkes Ltd, fl 1939-19431
- Aber, Adolf, music publisher, 1893-1960, http://isni.org/isni/000000...6
- Abraham, Gerald Ernest Heal, musicologist, 1904-1988, http://isni.org/isni/000000...3
- Academia Book Co., of Tokyo; booksellers, fl 1957-19581
- Accademia Nazionale di Santa Cecilia, 1585-2
- Adam and Charles Black, of London; printers, 1807-1
- Adams and Company, of Port Louis, Mauritius; music dealers, fl 1939-19431
- Adams, Danton, painter, 1904-19901
- Adams, David, music publisher, fl 1955-199026
- Adar Nissan Associates, book dealers, fl 1944-19491
- Addison, A. R., correspondent of Boosey and Hawkes Ltd., fl 1956-19581
- Adkins, Hector Ernest, bandmaster, 1885-19621
- Adler, F. Charles, correspondent of Boosey and Hawkes, fl 19571
- Adler, Kurt, correspondent of Boosey and Hawkes, fl 1954-19611
- Adler, Peter Herman, conductor, 1899-1990, http://isni.org/isni/000000...5
- Adolf Janssen, of Bremen; music publishers, fl 1947-19481