| NASA Postdoctoral Program | Academic & Science |
| Nuclear Policy Program | Academic & Science |
| Net Primary Production | Accounts and Finance |
| Napperby | Airport Code |
| Nuveen Performance Plus Municipal Fund | Business |
| New Product Planning | Business |
| Northland Power Preferred Equity Incorporated (de-listed) | Business |
| Notice of Privacy Practice | Business |
| Non-Primary Production | Business |
| Nashville Prevention Partnership | Community |
| Notepad Plus Plus | Computing |
| Network Printing Protocol | Computing |
| Network Packet Provider | Computing |
| Non Paged Pool | Computing |
| National Privacy Principles | Computing |
| Neighborhood Plaza Partnership | General |
| Nutanix Platform Professional | General |
| No Pushrod Pinch | General |
| National Population Policy | General |
| No Party Preference | General |
| NPOESS Prepartory Project | General |
| Nuveen Performance Plus | General |
| Neighborhood Performance Project | General |
| Nazi Party Participant | General |
| New Project Program | General |
| Neighborhood Plaza Program | General |
| New Payments Platform | General |
| National Playwriting Program | General |
| Neighborhood Parking Permit | General |
| Non Polar Particle | General |
| Neighborhood Preservation Program | General |
| Neighborhood Parking Program | General |
| Neighborhood Permit Parking | General |
| Nismo Performance Package | General |
| Nodo Porta Passeggeri | General |
| Nissan Premium Protection | General |
| N Performance Parts | General |
| Non Performance Pack | General |
| NROTC Preparatory Program | General |
| Non-Proliferation Project | General |
| New Planting Procedure | General |
| Neighborhood Participation Program | General |
| National Population Programme | General |
| Nurse Practitioner in Psychiatry | General |
| National Perspective Plan | General |
| National Priorities Partnership | General |
| National Purchasing Partners | General |
| NVIDIA Performance Primitives | General |
| Notices of Privacy Practices | General |
| New Patriotic Party | General |
| Nearest Point Preserving | General |
| New Product Package | General |
| National Priorities Project | General |
| Neighborhood Partnership Program | General |
| Northern Periphery Programme | General |
| National Priority Program | Governmental |
| National People's Party | Governmental |
| Nuclear Power Plant | Governmental |
| Net Patronage Potential | Governmental |
| Net Primary Productivity | Governmental |
| National Policing Plan | Governmental |
| Notice of Proposed Priorities | Governmental |
| National Patriotic Party (Liberia) | Governmental |
| National Parks Project | Governmental |
| New Patriotic Party (Ghana) | Governmental |
| Northern People's Party (Ghana) | Governmental |
| New People's Party (Hong Kong) | Governmental |
| New Progressive Party | Governmental |
| National Peoples Party (Pakistan) | Governmental |
| National People's Party (South Africa) | Governmental |
| Normal Probability Plot | Maths |
| Nurse Practitioner Psychiatric | Medical |
| Non-Physician Provider (Hospital) | Medical |
| Nonparalytic polio | Medical |
| Neuroscience Physiology and Pharmacology | Medical |
| Nice Pocket Pair | Messaging |
| No Problem, Pal | Messaging |
| Non-profit Promoter | Messaging |
| Northern People's Party | Regional |
| Napperby, Northern Territory, Australia | Regional |
| National Polar-orbiting Partnership | Space Science |
| Npoess Preparatory Project | Space Science |
