| NSPS | National Sailing Programs Symposium 
| Others |
| NSPS | National Security Personnel System
| Others |
| NSPS | National Shipbuilding Procurement Strategy
| Others |
| NSPS | National Social Protection Strategy
| Others |
| NSPS | National Society of Physics Students
| Others |
| NSPS | National Society of Professional Surveyors
| Others |
| NSPS | National Strategic Protective Services
| Others |
| NSPS | National Suicide Prevention Strategy
| Others |
| NSPS | New Salem Philanthropic Society
| Others |
| NSPS | New Source Performance Standard
| Others |
| NSPS | New Source Performance Standards
| Others |
| NSPS | No Spells Purge Sorcery
| Others |
| NSPS | North Smithfield Public Schools
| Others |
| NSPS | Not Something that Personnel Should-have-to-put-up-with
| Others |
| NSPS | Nova Scotia Paramedic Society
| Others |
| NSPS | Nutritional Sciences and Pharmacology Students
| Others |