| Abbreviation | Definition |
|---|---|
| NOWRA | National Onsite Wastewater Recycling Association, Inc. |
| NOX | Northern Crossroads |
| NP | Net Purshasing |
| NPA | National Prescription Administrators |
| NPA | Network Pacific Asia |
| NPA | Nilcrom Porcelain Australia |
| NPA | North Pacific Airlines |
| NPAA | Namibia Professional Assistants Association |
| NPAC | North Precinct Advisory Council |
| NPB | Nagel Paper & Box Company |
| NPB | Nopaperbills.com |
| NPC | News Printing Company |
| NPC | Niche Private Company |
| NPC | Nutrition Physiology Company |
| NPCC | National Petroleum Construction Company |
| NPCC | National Provider Compliance Corporation |
| NPCC | Northern Pacific Coffee Company |
| NPCI | National Payments Corporation of India |
| NPCIL | Nuclear Power Corporation India Ltd |
| NPCIL | Nuclear Power Corporation of India Limited |