| Acronym | Definition |
|---|
| AAHA | American Animal Hospital Association |
| AAHA | Acetohydroxamic Acid (drug) |
| AAHA | Alexandria Area Hockey Association |
| AAHA | Atlantic Amateur Hockey Association |
| AAHA | African American Holiday Association |
| AAHA | American Association of Homes for the Aging (now American Association of Homes and Services for the Aging, AAHSA) |
| AAHA | Association of Alaska Housing Authorities |
| AAHA | American Amputee Hockey Association |
| AAHA | American Academy of Healthcare Attorneys |
| AAHA | Alamo Arabian Horse Association (Texas) |
| AAHA | American Appendix Horse Association |
| AAHA | Allegany Area Historical Association |
| AAHA | Alberta Amateur Hockey Association |
| AAHA | Awaiting Action Higher Authority |
| AAHA | Alachua Arabian Horse Association |
| AAHA | Alamo Area Hospitality Association (San Antonio, TX) |
| AAHA | African-American Heritage Association |
| AAHA | American Association of Handwriting Analysis |
| AAHA | American Arabian Horse Association |
| AAHA | American Academy of Health Administration |
| AAHA | American Amateur Holdem Association |