| Abbreviation | Definition |
|---|---|
| NRM | Net Revenue Management |
| NRMA | Natural Resource Management Area |
| NROM | Natural Resources Organizational Management |
| NRRM | Natural Resources and Recreation Management |
| NRWM | Nevadans for Responsible Wildlife Management |
| NRWM | Non Revenue Water Management |
| NSC | Number System Character (first digit of UPC) |
| NSCM | Neighborhood Stabilization Capital Management |
| NSCM | Next Step Care Management |
| NSM | National Sport Management |
| NSM | National Systems Management |
| NSML | NLNG Ship Management Limited |
| NSMS | National Safety Management Society |
| NSMS | National Shoreline Management Study |
| NSNC | Not Show No Call |
| NSWMA | National Solid Waste Management Authority |
| NSWMA | National Solid Wastes Management Association |
| NTM | National Technology Management |
| NTMC | National Transportation Management Conference |
| NTMI | New Technology Management Inc |