| Acronym | Definition |
|---|
| NPSS➣National Public Safety Solutions (various locations) |
| NPSS➣Numerical Propulsion System Simulation (NASA) |
| NPSS➣Native Plant Society of Saskatchewan |
| NPSS➣Nuclear and Plasma Science Society (IEEE) |
| NPSS➣National Pension Saving Scheme (UK) |
| NPSS➣NASA Packet Switching System |
| NPSS➣Northeast Product Safety Society, Inc. |
| NPSS➣New Product Six Sigma |
| NPSS➣North Pacific Ship Supply (Alaska) |
| NPSS➣North Park Secondary School (Brampton, Ontario) |
| NPSS➣Norwegian Police Security Service |