| Abbreviation | Definition |
|---|---|
| NOS | Not Otherwise Stated |
| NOSSCR | National Organization of Social Security Claimants Representatives |
| NOSSCR | National Organization of Social Security Claimants’ Representatives |
| NOUSA | North Of United States of America |
| NOV | Novation |
| NP | National Park |
| NPA | National Priority Area |
| NPA | National Program of Action |
| NPC | National Panhellenic Conference |
| NPC | National People's Congress |
| NPC | Not Particularly Careful |
| NPD | National Planning Department |
| NPDES | National Pollution Discharge Elimination System |
| NPE | NaviPlan Extended |
| NPE | Nutrition Program for the Elderly |
| NPF | National Partitions FAQ |
| NPF | National Postal Forum |
| NPFI | Non-public Personal and Financial Information |
| NPG | New Power Generation |
| NPG | NIOSH/Pocket Guide To Chemical Hazards |