| Abbreviation | Definition |
|---|---|
| NROTC | Naval Reserve Officer Training Corps |
| NROTC | Navy Reserve Officers Training Program |
| NRR | National Research Register |
| NRRC | Natural Resources Research Center |
| NRRC | Northeast Regional Research Center |
| NRRC | University of Minnesota National Resilience Resource Center |
| NRRI | National Regulatory Research Institute |
| NRRI | Natural Resources Research Institute |
| NRRM | Natural Resource and Recreation Management |
| NRRN | Nursing - Registered Nursing program |
| NRRT | Natural Resources, Recreation, and Tourism major |
| NRRU | Nakhon Ratchasima Rajabhat University |
| NRS | Negative Reinforcement University |
| NRTI | Natural Resources Training Institute |
| NRTI | Neighborhood Reinvestment Training Institute |
| NRTS | Network Resource and Training Site |
| NRU | Negative Reinforcement University |
| NS | Not Satisfactory |
| NSA | Napier Students Association |
| NSA | National Scholars Academy |