World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Masinloc/Sual | PHMSC | Philippines (the) |
| Maslenica | HRMAS | Croatia |
| Masnedovaerkets Havn/Vordingborg | DKMKH | Denmark |
| Masnedø | DKMAS | Denmark |
| Masnedsund | DKMNS | Denmark |
| Masnedsund Godningshamn | DKUNX | Denmark |
| Masnou | ESMSN | Spain |
| Måsøy | NOMSY | Norway |
| Massa Lubrense | ITMLU | Italy |
| Massawa (Mitsiwa) | ERMSW | Eritrea |