| Acronym | Definition |
|---|
| NHIA | New Hampshire Institute of Art |
| NHIA | National Home Infusion Association (Alexandria, Virginia) |
| NHIA | National Health Information Awards (Health Information Resource Center) |
| NHIA | National Health Information Agreement (Australia) |
| NHIA | NAACCR Hispanic Identification Algorithm |
| NHIA | natural hazard impact assessment |
| NHIA | National Herd Improvement Association (Australia) |
| NHIA | New Hampshire Internet Awards |
| NHIA | National Hydrogen Institute of Australia |
| NHIA | New Hampshire Inventors Association |
| NHIA | New Hanover International Airport (North Carolina) |
| NHIA | National Health Insurance Act of 2003 (US) |