| Abbreviation | Definition |
|---|---|
| NOPC | Naval Operational Planner Course |
| NOPF | Naval Ocean Processing Facility |
| NOPVS | Naval Offshore Patrol Vessels |
| NORC | Naval Ordinance Research Calculator |
| NORDA | Naval Ocean Research Development Activity |
| NOSCO | Naval Officers Spouses Club of Okinawa |
| NOSI | Naval Open Source Intelligence |
| NOSL | Naval Ordnance Station Louisville |
| NOSS | Naval Observatory Spy Satellites |
| NOST | Naval OPSEC Support Team |
| NOTC | Naval Officer Training Centre |
| NOTC | Naval Officers Training Centre |
| NOTS | Naval Overseas Transportation Service |
| NPB | Naval Project Brief |
| NPC | Navy Personnel Command |
| NPDS | Navy Postgraduate Dental School |
| NPO | Naval Pay Office |
| NPOI | Navy Precision Optical Interferometer |
| NPOL | Naval Physical and Oceanographic Laboratory |
| NPRP | Navy Professional Reading Program |