| Meaning | Category |
| NPOESS Preparatory Project | Governmental->NASA |
| Napperby, Northern Territory, Australia | Regional->Airport Codes |
| Nashville Prevention Partnership | Community |
| National People's Party | Governmental->Politics |
| National Policing Plan | Governmental->Police |
| National Priority Program | Governmental->Transportation |
| Net Patronage Potential | Governmental->US Government |
| Net Primary Productivity | Governmental->US Government |
| New Product Planning | Business->General |
| Nice Pocket Pair | Internet->Chat |
| Normal Probability Plot | Academic & Science->Mathematics |
| Nuclear Power Plant | Governmental->US Government |
| Nuveen Performance Plus Municipal Fund | Business->NYSE Symbols |
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