- Anne, Queen of Great Britain, 1665-17143
- Anners, Henry F.1
- Annis, Edward R., 1913-20093
- Anomaly Films1
- Another Mother for Peace (Association)1
- Anōtatē Scholē tōn Kalōn Technōn (Athens, Greece)1
- Anru Realty Corp.1
- Ansel Adams Museum4
- Anshe Chesed Congregation (Cleveland, Ohio)1
- Anshen & Allen1
- Ansie Realty Corp.2
- Ansorge, Martin C1
- Anstee, Margaret Joan1
- Anstey, John1
- Anstey, John, -18192
- Ant Farm (Design group)4
- Anthon, George1
- Anthony Campagna and Sons14
- Anthony Properties, Inc.1
- Anthony, David1
- Anthony, Earle C8
- Anthony, Les2
- Anthony, Ray1
- Anthony, Theophilus1
- Anti-Imperialist Singers1
- Antill, Edward, 1742-17893
- Antiquity (Musical group : active 1980s)3
- Antler, Steven D1
- Antonelli, Paola1
- Antoni Tadross & Co.1
- Antozone Chemical Co.1
- Antry Realty Corp.1
- Anuszkiewicz, Richard1
- Anything and Everything (Musical group)1
- Aoki, Carole1
- Aparacio, Domingo2
- Apaydın, Pertev, 1929-20211
- Apolei, Teresa, -20171
- Apollo Theatre (Organization : New York, N.Y.)1
- Appel, Henry J.2
- Apple computer, Inc.1
- Applebaum, Edmund, 1899-1
- Appleby, Paul H. (Paul Henson), 1891-19631
- Applegate, Mrs.1
- Appleget, Thomas B. (Thomas Baird)1
- Appleton, George Swett, 1821-18782
- Applewhite, Dr1
- Applewhite, Ruth1
- Aquinas High School (Bronx, New York, N.Y.)2
- Arbeit, Arnold A.10
- Arbogast and Ross (Musical group)1
- Arbuckle Bros.5
- Arbuckle-Ryan Co.2
- Arbuckles & Co.1
- Arbuthnot, Marriott, 1711?-17941
- Arbuthnot, Stephenson & Co.1
- Arcadia Realty Corp.1
- Archbishop Molloy High School (Jamaica, New York, N.Y.)8
- Archer, Guy1
- Archer, Henry W.1