| Abbreviation | Definition |
|---|---|
| NEDB | National Earthquake Database |
| NEDB | New England Database Summit |
| NEDB | Nuclear Explosion DataBase |
| NERD | National Education Researcher Database |
| NERD | National Energy Research Database |
| NERQ | Named Entity Recognition in Query |
| NES | New Entry Suggestion |
| NESDIS | National Environmental Satellite, Data, and Information Service |
| NET | Null End Tag |
| NFCD | National Finance Center Database |
| NFD | National Fleet Database |
| NFDD | National Forensic DNA Database |
| NFID | National Flood Information Database |
| NFNF | Non-First Normal Form |
| NHCD | Non Hiding Committed Database |
| NHPD | Natural Health Products Database |
| NIAD | National Internet Accessibility Database |
| NIDAQ | NIDAQ National Instruments Data Acquisition |
| NIDD | National Intellectual Disability Database |
| NIHR | National Institute for Health Research |