| Normal Atmospheric Pressure | Academic & Science |
| Native American Program, Harvard University | Academic & Science |
| National Academy Press | Academic & Science |
| North American Patriarchy | Academic & Science |
| Non Astronomical Programme | Academic & Science |
| Naples | Airport Code |
| Namie Amuro's Paradise | Business |
| National Association of Programmers | Business |
| National Processing, Inc. | Business |
| Sodium Phosphate | Chemistry |
| New Artist Program | Community |
| News Agent Provider | Community |
| Nebraska AIDS Project | Community |
| North American People, | Community |
| National Association of Parliamentarians | Community |
| Neighborhood Action Plan | Community |
| Neighborhood Assistance Program | Community |
| Network Access Provider | Computer and Networking |
| Neighborhood Assembly Point | Computing |
| National Attachment Point | Computing |
| Network Attachment Points | Computing |
| Network Availability Program | Computing |
| Network Accessibility Project | Computing |
| Network Analysis and Planning | Computing |
| Network Attached Peripheral | Computing |
| Network Access Profile | Computing |
| Network Audio Player | Computing |
| Not A Product | Computing |
| Network Access Point | Computing |
| Vector Graphics (naplps Format) (videoshow - Energraphics) | File Type |
| New Age Professionals | General |
| Nicholas Anthony Prior | General |
| Normaal Amsterdams Peil | General |
| The New Awareness Page | General |
| Non Agression Pact | General |
| Neutral Access Point | General |
| Network Access Protocol | General |
| Neighborhood Action Project | General |
| Net Aggregate Position | General |
| Nieuw Amsterdams Peil | General |
| Name Address and Phone | General |
| Northern Area Partnership | General |
| Name Address Phone | General |
| Nebraska Area Papillon | General |
| New Archery Products | General |
| Nutrition Attention And Prayer | General |
| National Advantage Program | General |
| A New Access Protocol | General |
| Navigation Action Point | General |
| Non Agressions Pact | General |
| No Action Plan | General |
| NESS Application Portal | General |
| National Adaptation Plan | General |
| Non aggression principle | General |
| Non Aggression Pact | General |
| National Academies of Practice | General |
| National Adaptation Plans | General |
| North American Properties | General |
| Natural Area Preservation | General |
| Nebraska Accommodation Project | General |
| Nippon Auto Parts | General |
| Niche Assessment Program | General |
| Nationale Autopas | General |
| National Automotive Policy | General |
| National Autobody Parts | General |
| Nissan Anti Pollution | General |
| New Automotive Policy | General |
| Nigerian Automotive Policy | General |
| Nordic Auto Parts | General |
| Newark Assembly Plant | General |
| Nutrition Assistance Program | General |
| National Awards Program | General |
| Normal Amsterdams Peil | General |
| National Advantage Plan | Governmental |
| Nigeria Advance Party | Governmental |
| National Academies Press | Governmental |
| N?leos de Acci? Popular | International |
| Núcleos de Acción Popular | International |
| ...Not A Problem | Internet |
| Neutrophil Alkaline Phosphatase | Medical |
| Nominal Accelerating Potential | Medical |
| No Advertising, Please | Medical |
| Nursing Assistive Personnel | Medical |
| Nursing Assistant Program | Medical |
| Nursing Advancement Professionals | Medical |
| No Appointments Please | Medical |
| Not Authorized for Pomcus (prepositioning of Material Configured In Unit Sets) | Military and Defence |
| Not Authorized Prepositioning | Military and Defence |
| Norwegian Army Protocol | Military and Defence |
| Network Application Program | Networking |
| Network Access Protection | Networking |
| Network Address Protocol | Networking |
| Network Access Points | Networking |
| Narragansett Pier Railroad | Regional |
| Naples, Italy | Regional |
| Narragansett Pier Railroad Company | Regional |
| Navigation Analysis Program | Space Science |
| Non-astronomical Program | Space Science |
| North American Pairs | Sports |
| National Alliance of Powerlifters | Sports |
