| Abbreviation | Definition |
|---|---|
| ADNY | Alliance for Downtown New York |
| ADPA | Alabama Damage Prevention Alliance |
| ADS | Alliance Data Systems |
| ADSE | Alliance for Diversity in Science and Engineering |
| ADW | Alliance of Downriver Watersheds |
| AEA | Association Education Alliance |
| AEAA | Aids and Equipment Action Alliance |
| AEDA | Alliance for Eating Disorders Awareness |
| AELS | Alliance Early Learning School |
| AEME | Alliance for Equity in Montessori Education |
| AEMG | Alliance Electronics Marketing Group |
| AENM | Alliance of European National Movements |
| AERM | Alliance of European Republican Movements |
| AFA | Aerospace Futures Alliance |
| AFA | Agriculture Fairness Alliance |
| AFBA | ASEAN Food and Beverage Alliance |
| AFBA | Austin Food Blogger Alliance |
| AFCL | Alliance Finance Corporation Limited |
| AFCS | Alliance Fastpitch Championship Series |
| AFCS | Alliance for Cell Signaling |