World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Adony | HUADY | Hungary |
| Adra | ESADR | Spain |
| Adrian | USDIA | United States of America (the) |
| Adventure | GYANT | Guyana |
| Aegina | GRAEG | Greece |
| Aegna | EEAEN | Estonia |
| Aeugst am Albis | CHXRE | Switzerland |
| Aewol | KRAWL | Korea, Republic of |
| Åfjord | NOAAF | Norway |
| Afognak | USAFK | United States of America (the) |