| Abbreviation | Definition |
|---|---|
| MAAT | Multi-Altitude Assault Transport |
| MAD | Mastertronic Added Dimension |
| MAD | Multiple Appellation Designate |
| MAIT | Modular Automated Individual Transport |
| MAP | Magic Attack Power |
| MARC | Many Aliens Record Contract |
| MARS | Military Arms Research Syndicate |
| MASK | Mobile Armored Strike Kommand |
| MBBS | Master of Bajji Bonda Service |
| MC | Mistress of Chaos |
| MCD | Mythical Creatures Department |
| MCHC | Make Chavs History Campaign |
| MCS | Micronational Cartography Society |
| MD | Mad Doctor |
| MD | Major Doona |
| MDC | Mega Damage Capacity |
| MDC | Military Destroyer Class |
| MDD | Millennium Dynamic Deformer |
| MEL | Mechanically Enhanced Lapdog |
| MERC | Mechanical Emotionally Responsive Creature |