| Abbreviation | Definition |
|---|---|
| NDTI | National Disease and Therapeutic Index |
| NEC | Not Elsewhere Classified |
| NED | NIH (National Institutes of Health) Enterprise Directory |
| NEDSS | National Electronic Disease Surveillance System |
| NEEP | National Exercise and Evaluation Program |
| NEFARMA | NEederlandse FARMAceutische Industrie (NEtherland Association of the Research-oriented PHARMAceutical Industry) |
| NEFLE | National Exchange for Food Labeling Education |
| NE-FO(ORA) | Regional Field Office, Northeast Region |
| NEHA | National Environmental Health Association |
| NEI | National Eye Institute |
| NEMA | National Electrical Manufacturers Association |
| NEMA | National Emergency Management Association |
| NEP | National Exercise Program |
| NEPA | National Environmental Policy Act |
| NetBEUI | NetBIOS Extended User Interface |
| NEXT | Nationwide Evaluation of X-ray Trends |
| NEXT | Nationwide Evaluation of X-ray Trends (CDRH) |
| NF | National Formulary |
| NFPA | National Food Processors Association |
| NFSS | National Food Safety System |