| Acronym | Meaning |
| MA | Material Authorization |
| MA | Metabolic Analyzer |
| MA | Middeck Act |
| MA | Mike Amplifier |
| MA | Milliampere |
| MA | Missed Approach |
| MA | Mission Analysis |
| MA | Multiple Access |
| MA | Multiple-access |
| MA&P | Maintenance Analysis And Planning |
| MA&T | Manufacturing Assembly And Test |
| MAA | Mathematical Association Of America |
| MAA | Maximum Authorized Altitude |
| MAA | Mechanical Arm Assembly |
| MAAB | Materials Application Advisory Board |
| MAAR | Monthly Associate Administrator's Review |
| MAB | Master Acquisition Bus |
| MAB | Materials Advisory Board |
| MAB | Materials Applications Board |
| MAB | Mechanical Automation Breadboard |
| MAB | Missile Assembly Building |
| MAC | Main Display Console |
| MAC | Maintenance Advisory Committee |
| MAC | Maximum Allowable Concentration |
| MAC | Maximum Concentration Of Organics |
| MAC | Mean Aerodynamic Chord |
| MAC | Mean Aerodynamic Chord |
| MAC | Military Airlift Command |
| MAC | Multiaccess Computer |
| MACDS | Monitor And Control Display System |
| MACE | Mechanical Antenna Control Electronics |
| MACH | Machine |
| MACH | Velocity Relative To The Speed Of Sound |
| MACI | Monitor |
| MACO | Major Assembly Checkout |
| MACRO | Merge And Correlate Recorded Output (Program) |
| MAD | Madrid |
| MAD | Maintenance Analysis Data |
| MADC | Multiplexer Analog To Digital Converter |
| MADRE | Manufacturing Data Retrieval System |
| MADS | Modular Auxiliary Data System |
| MADS | Modular Auxiliary Data Systems |
| MAEP | Minimum Autoland Entry Point |
| MAF | Manpower Authorization File |
| MAF | Michoud Assembly Facility |
| MAF | Mixed Amine Fuel |
| MAG | Magazine |
| MAG | Magnetic |
| MAG | Magnitude |
| MAGSAT | Magnetometer Satellite |