- Ager, Milton, 1893-1979 (composer)11
- Agerton, Karen W.1
- Agnew, S.J., Assignees of1
- Agostini, Leonardo, 1593-ca. 16701
- Agribusiness Center for Research & Entrepreneurship2
- Agricultural Society1
- Agricultural Society of Pendleton, S.C.1
- Agricultural Society of South Carolina1
- Agriculture Commission of South Carolina1
- Ahlert, Fred E., 1892-1953 (composer)2
- Ahmann, Mathew1
- Ahrens, Henry H.6
- Aiken County Relief Council (Aiken, S.C.)1
- Aiken Technical College56
- Aiken Technical College, Office of Planning and Research9
- Aiken Vine Growing and Horticulture Association1
- Aiken, Albert F.2
- Aiken, C.M.1
- Aiken, David Wyatt2
- Aiken, David Wyatt (1828-1887)1