| Acronym | Definition |
|---|
| NPSC | National Police Shooting Championships |
| NPSC | National Physical Science Consortium |
| NPSC | National Prison and Sentencing Consultants (various locations) |
| NPSC | National Protection & Safety Consulting (California) |
| NPSC | National Processing Service Center |
| NPSC | National Professional Service Convention (National Electronics Service Dealers Association) |
| NPSC | Nagaland Public Service Commission (India) |
| NPSC | Naval Personnel Separation Center (US Navy) |
| NPSC | National Producers Service Company |
| NPSC | National Pipe Straight Coupling |
| NPSC | National Petroleum Services Company |
| NPSC | National Port Security Committee |
| NPSC | NATO Precautionary System Conference |