| Abbreviation | Definition |
|---|---|
| M18 | PZL-Mielec M-18 Dromader |
| MA&T | Master Auto and Test |
| MAA | Maryland Aviation Administration |
| MAAC | Mid-Atlantic Aviation Coalition |
| MAAP | Mid Atlantic Aviation Partnership |
| MAAST | Milwaukee Academy Of Aviation Science Technology |
| MAAW | Miniature Aircraft Association of Westchester |
| MAC | Mean Aerodynamic Chord |
| MACA | Mid-Air Collision Avoidance |
| MACC | Miami Airport Convention Center |
| MACO | Maximum Accouterments Carry-On |
| MAD | Magnetic Anomaly Detector |
| MAD | Maximum Altitude Design |
| MAD | Minimum Approach Distance |
| MADC | Maharashtra Airport Development Company |
| MAED | Marine Aircraft Experimental Depot |
| MAEE | Marine Aircraft Experimental Establishment |
| MAG | Mecaer Aviation Group |
| MAHS | Maine Aviation Historical Society |
| MAI | Moscow Aviation Institute |