| Abbreviation | Definition |
|---|---|
| MASCAL | Mass Casualty |
| MASDC | Military Aircraft Storage and Disposal Center |
| MASF | Mobile Aeromedical Staging Facility |
| MASF | Mobile Aero-medical Staging Facility |
| MASH | Military Aerospace Space and Homeland |
| MASH | Mobile Army Surgical Hospital |
| MASH | Monte Carlo Adjoint Shielding |
| MASINT | Measurement and Signature Intelligence |
| MASINT | Measurements and Signature (or Signal) Intelligence |
| MASIS | Materiel Acquisition Support Information System |
| MASL | Military Articles Services List |
| MASLO | Measurement and Signature Intelligence (MASINT) Liaison Officer |
| MASP | MILITARY ACADEMIC SKILLS PROGRAM |
| MASP | Military Adaptive Sports Program |
| MASR | Multiple Antenna Surveillance Radar |
| MASS | MOBCON Automated Support System |
| MASS | Mobility Analysis Support System |
| MAST | Maximum Aircrew Stress Tolerance |
| MAST | Medical Anti-Shock Trousers |
| MAST | Military Assistance in Safety and Traffic |