| Acronym | Definition |
|---|
| MX | Mexico (Internet top level domain) |
| MX | Matrix |
| MX | Mail Exchange (record) |
| MX | Maintenance |
| MX | Motocross |
| MX | Mexicana (airline code) |
| MX | Mixer |
| MX | Merry Christmas |
| MX | Maxwell |
| MX | Middlesex (English County) |
| MX | Manx (cat breed; Isle of Man) |
| MX | Multiplex |
| MX | Mylo Xyloto (Coldplay album) |
| MX | Montreal Exchange (Canada) |
| MX | Mail Exchanger Record (Domain name system) |
| MX | Mutually Exclusive (condition) |
| MX | Compania Mexicana de Aviacion (IATA airline code) |
| MX | Memory Expansion (AT&T) |
| MX | Mexico/Mexican |
| MX | Mechanized |
| MX | Maximum Exposure (TV show) |
| MX | Message Exchange (Nortel) |
| MX | Methylxanthine |
| MX | Maintenance Code |
| MX | Master Agility Excellent (AKC title) |
| MX | Mixed Xylene |
| MX | Missile Experimental |
| MX | Mode Exit |
| MX | Media Xpander (Alpine Car Audio) |
| MX | Metal-Halogen |
| MX | Moment of Execution |
| MX | Military Experimental |
| MX | Mazda Experimental (Mazda) |