| Abbreviation | Definition |
|---|---|
| MTW | Major Theater War |
| MTW | Medieval Total War |
| MTW | Models That Work |
| MTWAN | Mobile Tactical Wide Area Networking |
| MTWS | MAGTF (Marine Air-Ground Task Force) Tactical Warfare Simulation |
| MTWS | MAGTF Tactical Warfare Simulation |
| MTX | Message Text Format |
| MU | Marry Up |
| MU | Military Unit |
| MU | Multiple Unit |
| MUAHAG | Military Usage And Harmonisation Advisory Group |
| MUAHAG | Military Users Ad Hoc Advisory Group |
| MUAS | Maveric Unmanned Aerial System |
| MUC | Meritorious Unit Citation |
| MUE | Multi- User Equipment |
| MUF | Minimum Usable Frequency |
| MUFC | Maritime Underwater Future Capability |
| MUFTI | Civilian Attire for military personnel |
| MUGU | Point Mugu Naval Air Station, Point Mugu, California |
| MUGV | Manpackable Unmanned Ground Vehicle |