| Abbreviation | Definition |
|---|---|
| MSF | Music Special Forces |
| MSFB | Marine Security Force Battalion |
| MSFD | Multisensor Fusion Demonstration |
| MSFO | Marine Safety Field Office |
| MSG | Master Sergeant |
| MSG | Message |
| MSG | Militarisch Scharfschutzen Gewehr |
| MSG | Multi- Source Group |
| MSG | Multi-Source Group |
| MSGID | Message Identification |
| MSGT | Master Sergeant |
| MSGU | Military Security Guard Unit |
| MSH | Military Service History |
| MSHARPP | Mission, Symbolism, History, Accessibility, Recognizability, Population, and Proximity |
| MSHORAD | Maneuver-SHOrt-Range Air Defense |
| MSI | First year of Military Science |
| MSI | Medium Scale Integration |
| MSI | Medium-Scale Integration |
| MSI | Modified Surface Index |
| MSI | Multi- Spectral Imagery |