| Abbreviation | Definition |
|---|---|
| NMM1 | Native Machinist's Mate Petty Officer First Class |
| NMM1 | tive Machinist's Mate Petty Officer First Class |
| NMM2 | Native Machinist's Mate 2nd Class |
| NMM2 | tive Machinist's Mate 2nd Class |
| NMMM | Navy Maintenance Material Management |
| NMOC | Naval Meteorology and Oceanography Command |
| NMOL | Nenavy Moms On Line |
| NMP | Navy Manning Plan |
| NMPC | Naval Military Personnel Command |
| NMPS | Navy Mobilization and Processing Site |
| NMPS | Navy Mobilization and Processing Sites |
| NMPS | Navy Motion Picture Service |
| NMRL | Naval Materials Research Laboratory |
| NMRN | National Museum of the Royal Navy |
| NMSO | Navy Modeling and Simulation Office |
| NMSO | Navy Modeling Simulation Office |
| NMST | Navy Medicine Support Team |
| NMW | Naval Mine Warfare |
| NN | Nigeria Navy |
| NND | Naval Net Depot |