| Abbreviation | Definition |
|---|---|
| MARS | Mechanized Assault Recon And Strike |
| MARS | Military Affiliate Radio Sys |
| MARS | Military Affiliate Radio System |
| MARS | Military Affiliated Radio System |
| MARS | Military Armaments Research Syndicate |
| MARS | Military Auxiliary Radio System |
| MARS | Mobile Adjustable Ramp System |
| MARS | Mobile Assault Rescue And Strike |
| MARSA | Military Assumes Responsibility For Separation of Aircraft |
| MARSEC | Maritime Security |
| MARSOC | Marine Corps Special Operations Command |
| MARSOF | Marine Corps Special Operations Forces |
| MART | Mobile Automatic Digital Network (AUTODIN) Remote Terminal |
| MARTD | Marine Aviation Reserve Training Detachment |
| MARV | Mini Autonomous Robot Vehicle |
| MAS | Mastering Alliance Strategy |
| MAS | Military Airlift Squadron |
| MAS | Modis Airborne Simulator |
| MASAR | Multimode Airborne Solid-State Array Radar |
| MASC | Military Audiology Short Course |