World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Dublin-Ferryport Terminal 2 | IEDFB | Ireland |
| Dublin-Ferryport Terminal 3 | IEDFC | Ireland |
| Dublin-Marine Terminal | IEMTL | Ireland |
| Dubna | RUDUB | Russian Federation (the) |
| Dubovka | RUDBK | Russian Federation (the) |
| Dubreka | GNDKA | Guinea |
| Dubrovnik | HRDBV | Croatia |
| Dubuque | USDBQ | United States of America (the) |
| Ducheng | CNDCG | China |
| Ducos | NCDUS | New Caledonia |