World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Marche-les-Dames | BEMLD | Belgium |
| Marchevo | BGMAB | Bulgaria |
| Marchienne-au-Pont | BEMAP | Belgium |
| Marchwood | GBMAW | United Kingdom |
| Marciana Marina | ITMAM | Italy |
| Marcona | PESJA | Peru |
| Marcus Hook | USMAH | United States of America (the) |
| Marcy | USZAY | United States of America (the) |
| Mardas | TRMAD | Türkiye |
| Maré | NCMEE | New Caledonia |