HAAA
| Acronym | Definition |
|---|---|
| HAAA | Harvard Arab Alumni Association |
| HAAA | Henderson Area Arts Alliance |
| HAAA | Halifax Area Advertising Authority |
| HAAA | Hepatitis-Associated Aplastic Anemia (disorder) |
| HAAA | Halton Aircraft Apprentice Association (UK) |
| HAAA | Heritage Area Agency on Aging (Cedar Rapids, IA) |
| HAAA | Hypo Auditory Aesthetic Aphasia |