| Abbreviation | Definition |
|---|---|
| AEP | Association of European Psychiatrists |
| AEPP | Association of Education Practitioners and Providers |
| AEPU | Association of Early Pregnancy Units |
| AES | American Electrophoresis Society |
| AES | Audio Engineering Society |
| AESA | Armenian Engineers and Scientists of America |
| AESA | Association for Economic and Social Analysis |
| AESA | Autoridad Europea de Seguridad Alimentaria |
| AESC | Association of Executive Search Consultants |
| AEW | Association of Electrical Wholesalers |
| AFA | American Federation of Aviculture |
| AFAA | American Fighter Aces Association |
| AFAA | Asian Federation of Advertising Associations |
| AFAA | Association For Africanist Anthropology |
| AFAA | Automatic Fire Alarm Association |
| AFAG | Arboriculture and Forestry Advisory Group |
| AFAN | Association For Astrological Networking |
| AFANB | L'Association des forestiers agr????s du Nouveau-Brunswick (The Association of Registered Professional Foresters ofNew Brunswick) |
| AFANB | L'Association des forestiers agréés du Nouveau-Brunswick (The Association of Registered Professional Foresters ofNew Brunswick) |
| AFAP | Australian Federation of Air Pilots |