| Acronym | Definition |
|---|
| HIAA➣Health Insurance Association of America |
| HIAA➣Halifax International Airport Authority (Canada) |
| HIAA➣Hydroxy-Indole-Acetic Acid |
| HIAA➣Health Insurance Advisors Australia (Sydney, Australia) |
| HIAA➣Horse Industry Association of Alberta (Canada) |
| HIAA➣Hokkaido International Agri-Exchange Association (Japan) |
| HIAA➣Henley International Alumni Association (Henley University; various locations) |
| HIAA➣Hispanic International Action Association |