| Abbreviation | Definition |
|---|---|
| AHDA | Alliance for Headache Disorders Advocacy |
| AHDA | Alliance for Historical Dialogue and Accountability |
| AHEA | Adult Higher Education Alliance |
| AHEA | Adult Higher Educational Alliance |
| AHFA | American Home Furnishings Alliance |
| AHM | Alliance for Hippocratic Medicine |
| AHO | Alliance for Hospital Optimization |
| AHOA | Alliance Hall Of Allentown |
| AHOC | Alliance for a Healthy Orange County |
| AHUA | American Highway Users Alliance |
| AIA | Akzar Imperial Alliance |
| AIA | Alliance of International Aromatherapists |
| AICA | Alliance of International Corporate Advisors |
| AICA | American Independent Cockpit Alliance |
| AICN | Alliance Of Ieee Consultants Networks |
| AIDE | Alliance of Independent Democrats in Europe |
| AIF | alliance of independent firms |
| AIHO | Alliance for Improving Health Outcomes |
| AII | Alliance for Innovation and Infrastructure |
| AII | Alliance for Innovation and Infrastructure (Aii) |