- Attaway, Torres E.1
- Attic Press (Dublin, Ireland)4
- Atwater Lee, Tiffany1
- Atwood, E. Jay1
- Atwood, Sanford S. (Sanford Soverhill), 1912-200218
- Auburn Greeting Card Company1
- Auburn Post Card Mfg. Co.3
- Auchmutey, Charles Robert, Jr., 1921-20072
- Aucoin, Louis M1
- Audas, Tuttle H. (Tuttle Hudson), 1795-1868 (Clerk, Hancock County Superior Court, third party)2
- Audio-Photo Services, Inc.1
- Audio-Video Byrd (Atlanta, Ga.)4
- Aued, Blake2
- Augspurguer, Samuel1
- August, Sharon1
- Augusta (Ga.) Department of Public Health1
- Augusta (Ga.). City Council1
- Augusta (Ga.). Fire Department2
- Augusta Art Club1
- Augusta Art Gallery9