| Acronym | Definition |
|---|
| HIIA➣Hungarian Institute of International Affairs (est. 2007) |
| HIIA➣Home Inspection Institute of America |
| HIIA➣Hawaii Independent Insurance Agents Association (professional organization) |
| HIIA➣Health Inequality Impact Assessment |
| HIIA➣Hog Island Improvement Association (Portsmouth, RI) |
| HIIA➣Holiday Isle Improvement Association |