Organizations
- Aston University - (Birmingham, United Kingdom) External Organization
- Astro Publisher
- Astro, Ltd. Publisher
- Ateneo de Manila University Publisher
- Athabasca University Press Publisher
- Atlantis Press Publisher
- Atmospheric Sciences Academic Department,Organization
- Aubad Publishing Publisher
- Auburn University Publisher
- Audio Engineering Society Publisher
- Auerbach Publications Publisher
- Augusta University - (Augusta, Georgia, United States) Organization,External Organization
- Augustana College - (Sioux Falls, South Dakota, United States) External Organization
- Aulona Press Publisher
- Aurora Health Care Publisher
- Austin Community College - (Austin, Texas, United States) Organization,External Organization
- Austin Publishing Group Publisher
- Austin College - (Sherman, Texas, United States) External Organization
- Australasian Medical Publishing Publisher
- Australian Conservation Foundation - (Australia) Organization
- Australian National University - (Canberra, Australian Capital Territory, Australia) External Organization
- Australian Military History Publications Publisher