World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Mckean Island | KIMCK | Kiribati |
| McKees Rocks | USMKJ | United States of America (the) |
| McLeansville | USQMC | United States of America (the) |
| McMurdo | AQMCM | Antarctica |
| Meadowdale | ZAMDE | South Africa |
| Meadows | INMDW | India |
| Meadows of Dan | USJJQ | United States of America (the) |
| Meads Bay Beach | AIMBB | Anguilla |
| Meaford | CAMFD | Canada |
| Meaux | FRMEA | France |