| Abbreviation | Definition |
|---|---|
| NAP | Namie Amuro's Paradise |
| NAPC | National Archive Publishing Company |
| NAPC | New American Platinotype Company |
| NAPCES | North America Phase Converters & Electrical Supply |
| NAPCO | Northwestern Auto Parts Company of |
| NAPCO | The Northwestern Auto Parts Company Of |
| NAPI | Navaho Agricultural Products Industries |
| NAPOCOR | National Power Corporation |
| NAPSI | North American Precis Syndicate Inc |
| NAPSI | North Atlanta Pool Service Inc |
| NAPSI | North Atlanta Pool Services Inc |
| NARC | National Automobile Recovery Company |
| NARF | North Alabama Regional Furs |
| NARM | North Australian Rubber Mills |
| NAS | Nikon Advanced Systems |
| NASA | National Assistance Services Australia |
| NASC | Navmar Applied Sciences Corporation |
| NASCAR | National Association For Stock Car Automobile Racing |
| NASCC | National Air Survey Center Corporation |
| NASCC | Naval Air Station Corpus Christi |