World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Ascension | SHASC | Saint Helena, Ascension and Tristan Da Cunha |
| Aschaffenburg | DEASC | Germany |
| Aseri | EEASE | Estonia |
| Aseri Väikesadam | EEASV | Estonia |
| Ashburton | AUASB | Australia |
| Ashdod | ILASH | Israel |
| Ashdod Southport | ILAST | Israel |
| Ashibe | JPASB | Japan |
| Ashinoura | JPASH | Japan |
| Ashitoku | JPAST | Japan |