World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Ronks | USROJ | United States of America (the) |
| Rönnäng | SERNG | Sweden |
| Ronneby | SERNB | Sweden |
| Ronnebyhamn | SERBY | Sweden |
| Rönnskär | SEROR | Sweden |
| Rönnskärsverken | SEROV | Sweden |
| Ronquières | BERQS | Belgium |
| Roograhu | EERGR | Estonia |
| Roomassaare | EERMS | Estonia |
| Roompotsluis | NLRSL | Netherlands |