- Adler, Renata1
- Adler, Richard, 1921-20121
- Adolfsson, Martin1
- Adorno, Theodor W., 1903-19691
- Adrian Builders, Inc.1
- Advanced Workers with the Anti-Imperialist Singers (Musical group)1
- Advertising Council3
- Advice Realty1
- Adwoa, Kai1
- Aetna National Bank1
- Aetna Rubber Co.1
- Affiliated Developers, Inc.2
- Affleck, Lady1
- Affleck, M.2
- African Free School (Newark, N.J.)1
- African Liberation Forces of Mauritania4
- African Liberation Support Committee6
- African Liberation Support Committee. Conference (1974 : Washington, D.C.)3
- African Methodist Episcopal Church. Missionary Department1
- African Union Church (U.S.)1
- African telegraph and Gold Coast mirror (Newspaper)1
- African times and Orient review (Newspaper)11
- Ageloff, Samuel1
- Agent Orange (Musical group)2
- Agle, David1
- Agnew, John2
- Agnew, Spiro T., 1918-19962
- Agol Realty Corp.1
- Agran, Larry1
- Agrest, Diana1
- Aguirre, Carlos1
- Agüeros, Jack, 1934-20149
- Ahmed, Muhammad, 1941-1
- Ahrens, Peg1
- Ahrland, Karin, 1931-20192
- Ahtisaari, Martii1
- Aiken, Conrad, 1889-19733
- Aiken, George D. (George David), 1892-19841
- Aikin, Lambert & Co.2
- Ailes, Roger1
- Aina, Tade Akin1
- Aitken, Gillon R.1
- Aitken, Thomas D1
- Ajello, G.1
- Ajemian, Alice1
- Ajemian, Anahid4
- Ajemian, Hagop1
- Akers, Adela, 1933-1
- Akers, Gene1
- Akiba Development Corp.1
- Akili, Baba1
- Akron Shoe Co.1
- Al-Amin, Jamil, 1943-1
- Al-Shathry Consulting Engineers1
- Alabastine Company1
- Alabilikian, Avedis1
- Alan H. Polkes Associates, Inc.3
- Alaska Treadwell Gold Mining Co.1
- Albanese, Anthony A.1
- Albany (N.Y.). Common Council1