| Acronym | Meaning |
 | MAI | Machine-Aided Indexing |
| MAIDS | Management Automated Information Display System |
| MAIDS | Multipurpose Automatic Inspection And Diagnostic |
| MAIDS | System |
| MAIN | Maintenance |
| MAINT | Maintenance |
| MAIR | Manufacturing And Inspection Record |
| MAJ | Major |
| MAL | Malfunction |
| MAL | Material Allowance List |
| MAL | Mobile Airlock |
| MALL | Malleable |
| MAN | Manual |
| MAN | Microwave Aerospace Navigation |
| MANF | Manifold |
| MAOT | Maximum Allowable Operating Time |
| MAP | Maintenance Analysis Program |
| MAP | Message Acceptance Pulse |
| MAP | Missed Approach Point |
| MAP | Mission Application Program |
| MAPOLE | Magnetic Dipole Spark Transmitter |
| MAPS | Measurement Of Air Pollution From Satellites |
| MAPS | Measurement Of Atmospheric Pollution From Satellites |
| MAR | Maintenance And Refurbishment |
| MAR | Memory Address Register |
| MARS | Martin Automatic Reporting System |
| MARS | Modular Airborne Recorder System |
| MASDC | Military Aircraft Storage And Disposition Center |
| MAT | Matrix |
| MAT | Meteorological Atmospheric Turbulence |
| MAT | Multiple Actuator Test |
| MATCO | Materials Analysis |
| MATL | Material |
| MAU | Million Accounting Units |
| MAUS | Messenschafteliche Autonome Experiment Unter |
| MAUS | Schewerelosigkeit |
| MAX | Maximum |
| MAXCO | Maximum Dynamic Pressure |
| MB | Millibar |
| MB | Main Bus |
| MB | Management Baseline |
| MBB | Messerschmitt-Boklow-Blahn |
| MBC | Maximum Breathing Capacity |
| MBCS | Motion-Base Crew Station (SMS) |
| MBFP | Manufacturing Build And Flow Plan |
| MBI | Multibus Interface |
| MBK | Medications And Bandage Kit |
| MBK | Medications And Bandage Kit |
| MBL | Mobile Unit (TACAN Station) |
| MBO | Management By Objective |
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