Name
- A. E. L. Marsh and Associates, publishers, fl 1952-19581
- A. J. Clemo, lithographic printer, fl 19581
- A. L. Tonika, of Bergen, Norway; music publishers, fl 1954-19603
- A.P. Watt and Son, literary agents, 1875-20125
- A.v.d. Kleyn, Dutch music publishers, fl 1943-19451
- ALMO, Belgian stage rental firm and copyright agency, fl 1945-196111
- Abbots Langley Gilbert and Sullivan Society, 1950-1
- Abel, Fritz, correspondent of Boosey & Hawkes Ltd, fl 1939-19431
- Aber, Adolf, music publisher, 1893-1960, http://isni.org/isni/000000...8
- Abraham, Gerald Ernest Heal, musicologist, 1904-1988, http://isni.org/isni/000000...3
- Academia Book Co., of Tokyo; booksellers, fl 1957-19582
- Accademia Nazionale di Santa Cecilia, 1585-2
- Ackland, Essie, singer, 1896-1975, http://isni.org/isni/000000...1
- Adair, Yvonne, composer, 1897-19895
- Adam and Charles Black, of London; printers, 1807-2
- Adams and Company, of Port Louis, Mauritius; music dealers, fl 1939-19431
- Adams, A., of Barnes, fl 19381
- Adams, Danton, painter, 1904-19901
- Adams, David, music publisher, fl 1955-199038
- Adams, E. A., composer and arranger, fl 19381