HIAA
| 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 |