| Abbreviation | Definition |
|---|---|
| MXR | Mirgorod, Russia |
| MXS | Maota, Savail Island, Samoa |
| MXT | Maintirano, Madagascar |
| MXU | Mullewa, Western Australia, Australia |
| MXV | Moron, Mongolia |
| MXW | Mandalgobi, Mongolia |
| MXX | Mora, Sweden |
| MXY | McCarthy, Alaska |
| MXZ | Meixian, Mainland China |
| MYA | Moruya, New South Wales, Australia |
| MYAB | Clarence Bain, Bahamas |
| MYAF | Andros Town International, Bahamas |
| MYAG | Gorda Cay, Bahamas |
| MYAK | Congo Town, Bahamas |
| MYAK | Congo Town-Andoros Island, Bahamas |
| MYAM | Marsh Harbour, Bahamas |
| MYAN | San Andros (Nichols Town), Bahamas |
| MYAO | Morres Island, Bahamas |
| MYAP | Spring Point Municipal, Bahamas |
| MYAS | Sandy Point, Bahamas |