| Abbreviation | Definition |
|---|---|
| ADED | Association of Driver Rehabilitation Specialists |
| ADFM | Association of Departments of Family Medicine |
| ADHA | American Dental Hygienists Association |
| ADHA | American Dental & Hygienists Association |
| ADHP | American Dental Hygienists' Association |
| ADI | Air Distribution Institute |
| ADI | Associazione per il Disegno Industriale |
| ADIS | Approved for Draft International Standard Circulation |
| ADMA | Australian Direct Marketing Association |
| ADMA | Aviation Distributors and Manufacturers Association |
| ADOA | Australasian Dispensing Opticians Association |
| ADPSO | Association of Data Processing Service Organizations |
| ADRA | Association of Debt Recovery Agents |
| ADRP | Association of Desktop Refresh Professionals |
| ADRP | Association of Donor Recruitment Professionals |
| ADSA | American Dairy Science Association |
| ADSA | American Dental Society of Anesthesiology |
| ADSS | Association of Directors of Social Services |
| AdvaMed | Advanced Medical Technology Association |
| AEA | American Engineering Association |