World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Mediapolis | USMP7 | United States of America (the) |
| Medina | PHMDN | Philippines (the) |
| Medstead | GBMES | United Kingdom |
| Medvezhyegorsk | RUMEG | Russian Federation (the) |
| Meer | BEMEE | Belgium |
| Meerhout | BEMEH | Belgium |
| Meerlo-Wansum | NLMEW | Netherlands |
| Meeruse | EEMRS | Estonia |
| Megálon Livádion | GRMEG | Greece |
| Meganísi | GRMGN | Greece |