| Abbreviation | Definition |
|---|---|
| MABC | Marker Assisted Back Crossing |
| MABSTOA | Manhattan and Bronx Surface Transportation Operating Authority |
| MAC | Manifest Analysis And Certification |
| MAC | Mean Aerodynamic Chord |
| MAC | Midair Attitude Correction |
| MAC | Military Airlift Command |
| MAD | Make A Delivery |
| MAF | Many Automotive Fixes |
| MAF | Model A Ford |
| MAFB | Mid-Atlantic F-body car |
| MAFC | Mid America Freight Coalition |
| MAGIC | Meggitt Advanced Generation Integrated Cockpit |
| MAGIC | Mobile Automotive Geographic Information Core |
| MAGLEV | Magnetic Levitated |
| MAIC | Motor Accident Insurance Commission |
| MAIT | Major Accident Investigation Team |
| MALS | Medium Intensity Approach Light System |
| MALSF | Medium Intensity Approach Light System With Sequenced Flashing Lights |
| MALSR | Medium Intensity Approach Light System With Rail |
| MALTC | Marikina Auto Line Transport Corporation |