| Abbreviation | Definition |
|---|---|
| NERI | Nevin Economic Research Institute |
| NERI | New England Research Institutes |
| NERR | National Estuarine Research Reserve |
| NERRA | National Estuarine Research Reserve Association |
| NERVTAG | New and Emerging Respiratory Virus Threats Advisory Group |
| NESS | National Earth Satellite Service |
| NETRA | National ESDM Technology Research Academy |
| NFCR | National Foundation for Cancer Research |
| NFER | National Foundation for Educational Research |
| NFLR | National Foundation for Liver Research |
| NFLR | National Foundation of Liver Research |
| NFRA | National Fibromyalgia Research Association |
| NFRC | National Fenestration Research Council |
| NFRC | National Forest Research Council |
| NFSR | National Fund for Scientific Research |
| NGR | National Glaucoma Research |
| NGR | Next Generation Research |
| Nh | the new name for Ununtrium (uut) |
| NHANES | National Health and Nutrition Examination Survey |
| NHC | National Hyperbaric Centre |