- American Israel Public Affairs Committee1
- American Jewish Committee2
- American Jewish Joint Distribution Committee1
- American Society of University Composers3
- Americans for Democratic Action2
- Ames, David1
- Ames, Genie1
- Amiri Baraka's Blue Ark (Musical group)2
- Amnesty International USA1
- Amos House (Shelters : Providence, R.I.)1
- Amos, Stanley2
- Amram, David28
- Anasa, Kimako1
- Ancier, Garth, 1957-1
- Andersen, Eric4
- Anderson, Abraham, 1954-1
- Anderson, Axel, 1929-20121
- Anderson, Carolyn, 1913-19931
- Anderson, Clinton Presba, 1895-19751
- Anderson, Helen1
- Anderson, James1
- Anderson, Jim1
- Anderson, Jim (Actor), active 1960s-1970s1
- Anderson, Jon, 1944-1
- Anderson, Marian, 1897-19932
- Anderson, Tom, 1910-20024
- Andii︠e︡vsʹka, Emma1
- Andrews, Frank3
- Android Sisters1
- Angeles, Bill1
- Another Mother for Peace (Association)1
- Anōtatē Scholē tōn Kalōn Technōn (Athens, Greece)1
- Anthony, David1
- Anthony, Les2
- Anthony, Ray1
- Anti-Imperialist Singers1
- Antiquity (Musical group : active 1980s)3
- Antonini, Alfredo1
- Anything and Everything (Musical group)1
- Apaydın, Pertev, 1929-20211
- Applegate, Mrs.1
- Aragon, 1897-19821
- Aragua Inc.1
- Aragón, Angélica, 1953-2
- Arbogast and Ross (Musical group)1
- Archer, Guy1
- Archivo Nacional de Teatro y Cine del Ateneo Puertorriqueño1
- Arel, Bülent, 1919-19905
- Arena, Franca, 1937-1
- Arena, Marc1
- Argerich, Martha, 1941-1
- Argüelles, José, 1939-20112
- Ariadne String Quartet1
- Arias, Consuelo, 1957-1
- Arizona State University1
- Armatrading, Joan1
- Arnheim, Rudolf1
- Arnold, Eddy, 1918-20081
- Arnold, Juliette1
- Aronowitz, Al9