| NHA | Nanjing Hongguang Autoliv 
| Others |
| NHA | Nantucket Historical Association
| Others |
| NHA | Nashville Humane Association
| Others |
| NHA | National Health Administrator
| Others |
| NHA | National Health Association
| Others |
| NHA | National Healthcareer Association
| Others |
| NHA | National Helicopter Association
| Others |
| NHA | National Heritage Academies
| Others |
| NHA | National Heritage Area
| Others |
| NHA | National Highway Authority
| Others |
| NHA | National Highways Authority
| Others |
| NHA | National Hockey Association
| Others |
| NHA | National Housing Act
| Others |
| NHA | National Housing Authority
| Others |
| NHA | National Humanities Alliance
| Others |
| NHA | National Hydrogen Association
| Others |
| NHA | National Hydropower Association
| Others |
| NHA | Natural Hair Academy
| Others |
| NHA | Navajo Housing Authority
| Others |
| NHA | Naval Helicopter Association
| Others |
| NHA | Nebraska Hospital Association
| Others |
| NHA | New Horizons Academy
| Others |
| NHA | Next Higher Assembly
| Others |
| NHA | Nice Hand All
| Others |
| NHA | No Hope Alliance
| Others |
| NHA | North Hills Aquatics
| Others |
| NHA | North Hills Automotive
| Others |
| NHA | North House Alliance
| Others |
| NHA | Northwest Hillclimb Association
| Others |
| NHA | Nursing Home Administrators
| Others |