| NNRC | NASA National Rally Championship 
| Others |
| NNRC | National Nematological Research Centre
| Others |
| NNRC | National Network of Reporting Companies
| Others |
| NNRC | National Neurological Rehabilitation Chambers
| Others |
| NNRC | Negev Nuclear Research Center
| Others |
| NNRC | Neural Networks Research Centre
| Others |
| NNRC | Neuroscience Nursing Research Center
| Others |
| NNRC | Neutral Nations Repatriation Commission
| Others |
| NNRC | New Netherland Research Center
| Others |
| NNRC | Newark News Radio Club
| Others |
| NNRC | Niedfelt Nursing Research Center
| Others |
| NNRC | Nigeria Natural Resource Charter
| Others |
| NNRC | Non Needy Relative Caregiver
| Others |
| NNRC | Non Needy Relative Caretaker
| Others |
| NNRC | Normanville Natural Resource Centre
| Others |
| NNRC | Northern Nevada Restitution Center
| Others |
| NNRC | Nutrition and Neutraceutical Research Centre
| Others |