| Abbreviation | Definition |
|---|---|
| NCVS | National Crime Victimization Survey |
| ND | Not Deceptive |
| NDEDIU | National Domestic Extremism and Disorder Intelligence Unit |
| NDPD | Notre Dame Police Department |
| NDSP | Notre Dame Security Police |
| NEACP | New England Association of Chiefs of Police |
| NEDSL | New England Drive to Save Lives |
| NEFA | New England Forensic Associates |
| NEPA | North Eastern Police Academy |
| NEPS | Non Emergency Police Services |
| NEU | Narcotics Enforcement Unit |
| NFA | National Forensic Academy |
| NFA | No Fixed Abode |
| NFDD | National Forensic DNA Database |
| NFDK | No Further Details Known |
| NFEA | Network Forensic Evidence Acquisition |
| NFL | National Forensic League |
| NFPA | No Further Police Action |
| NFS | National Forensic Service |
| NFSA | National Forensic Science Academy |