| Abbreviation | Definition |
|---|---|
| NAVSUPINST | Navy Support Instruction |
| NAVSUPPACT | Naval Support Activity |
| NAVSUPSYSCOM | Naval Supply Systems Command |
| NAVWAR | Navigation Warfare |
| NAVWPNCEN | Naval Weapons Center |
| NAVY | Nautical Army of Volunteer Yeomen |
| NAVY | Never Again Volunteer Yourself |
| NAVY | Not A Veteren Yet |
| NAWAS | ight Adverse Weather Attack System |
| NAWAS | Night Adverse Weather Attack System |
| NAWCAD | Naval Air Warfare Center, Aircraft Division |
| NAWCDD | Naval Surface Warfare Center, Dahlgren Division |
| NAWCTSD | Naval Air Warfare Center Training Systems Division |
| NAWCWD | Naval Air Warfare Center Weapons Division |
| NAWSIM | Naval Warfare Simulation |
| NB | NarrowBand |
| NB | New Blood |
| NB | Nominal Bore |
| NBC | Nuclear, Biological, and Chemical |
| NBCCS | NBC Contamination Survivability |