| Acronym | Definition |
|---|
| NPCA | National Parks Conservation Association |
| NPCA | National Peace Corps Association |
| NPCA | National Precast Concrete Association |
| NPCA | National Paint & Coatings Association |
| NPCA | National Pest Control Association |
| NPCA | National Police Canine Association |
| NPCA | Niagara Peninsula Conservation Authority |
| NPCA | Norwegian Pollution Control Authority |
| NPCA | Non-Profit Corporation Act (various locations) |
| NPCA | National Possum Control Agencies (New Zealand) |
| NPCA | National Playground Contractors Association |
| NPCA | North Port Contractors Association |
| NPCA | Navy Postal Clerks Association |
| NPCA | National Private Cable Association |
| NPCA | National Population Census Act |
| NPCA | National Pavement Contractor Association |
| NPCA | Nonlinear Principal Components Analysis |
| NPCA | Northeastern Pennsylvania Contractors Association |