| Abbreviation | Definition |
|---|---|
| NMSO | Nuclear Medicine Science Officer |
| NMSP-WOT | National Military Strategic Plan For The War On Terrorism |
| NMT | Needs More Testing |
| NMT | Network Management Tool |
| NMT | Nuclear Materials Technology |
| NMTB2 | Network Management Terminal Brigade and Below |
| NMTI | Naval Military Training Instructors |
| NMT-IPV | Navy Multiband Terminal International Partner Variant |
| NMTU | Navy Military Training Units |
| NMTW | Nominal Mission Takeoff Weight |
| NMU | Navy Meteorological Unit |
| NMW | Non Melee War |
| NMYC | National Military Youth Corps |
| NN | Neutral Network |
| NN | No No |
| NN | Non Nuclear |
| NNAG | North Atlantic Treaty Organization (NATO) Naval Armaments Group |
| NNC | Non- Normal Checklist |
| NNC | Non-Normal Checklist |
| NNI | No New Information |