| Abbreviation | Definition |
|---|---|
| HHSA | Hawaii Horse Show Association |
| HHSA | Herrington Harbour Sailing Association |
| HIA | Halloween Industry Association |
| HIA | Hauppauge Industrial Association |
| HIA | Hearing Industries Association |
| HIA | Hearing Industry Association |
| HIA | Hyogo International Association |
| HIAA | Health Insurance Association of America |
| HIAA | Historians of Islamic Art Association |
| HIAAA | Hagerstown Ice Amateur Athletic Association |
| HIBA | Hokkaido International Business Association |
| HICA | Hawaii Island Contractors Association |
| HICAI | Harsens Island Conservation Association Inc |
| HIEA | Hamilton Industrial Environmental Association |
| HIFA | Hawaii International Film Association |
| HIFA | Hawaiian Islands Freight Association |
| HIGA | Hawaii Insurance Guaranty Association |
| HIGA | Hiroshima Interpreter Guide Association |
| HIPA | Hastings Intellectual Property Association |
| HIPA | Hawaii Island Paddlesports Association |