| Abbreviation | Definition |
|---|---|
| MMSN | Machinist's Mate Seaman striker |
| MMT | Manufacturing Methods and Technology |
| MMT | Military Mail Terminal |
| MMT | Military Medical Technology |
| MMT | military medical training |
| MMT | Mission Management Team |
| MMTD | Miniaturized Munitions Technology Demonstration |
| MMTF | Military Medical Treatment Facility |
| MMTO | Military Medical Technology Online |
| MMTS | Mobile Multi-Spectral TSPI System |
| MMU | Malfunction Management Unit |
| MMU | Mass Memory Unit |
| MMU | Medium Machine gun Upgrade |
| MMU | Minimum Mapping Unit |
| MMV | Military Millennia Vehicle |
| MMW | Magical Mystery War |
| MMW | Millimeter Wave |
| MMWG | Mixed Military Working Group |
| MN | Magnetic North |
| MN | Main |