| Abbreviation | Definition |
|---|---|
| Np | neper |
| NP(s) | nanoparticle(s) |
| NPA | Nuclear Physics A |
| NPB | Nuclear Physics B |
| NPC | Nuclear Pore Complex |
| NPD | Nuclear Physics Division |
| NPDF | Nuclear Parton Distribution Function |
| NPE | Neural Physics Engine |
| NPGS | Nanometer Pattern Generation System |
| NPIC | Nuclear Power Institute of China |
| NPL | National Physical Laboratory |
| NPL | National Physics Laboratory |
| NPL | Nikon Pulsed Laser |
| NPL | Nuclear Plasma Laboratory |
| NPs | nanoparticle(s) |
| NPs | nanoparticles |
| NPSS | Native Plant Society of Saskatchewan |
| NPSS | Nuclear Physics Summer School |
| NPSs | Nuclear Power Sources |
| NPTC | National Physics Talent Contest |