World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Ath | BEATH | Belgium |
| Athena | USTHN | United States of America (the) |
| Atherinolakos Ierapetras | GRATL | Greece |
| Athinios Thira Santorini | GRATN | Greece |
| Athis | BE7PD | Belgium |
| Atholville | CAALV | Canada |
| Atico | PEATI | Peru |
| Atimonan/Siain | PHATI | Philippines (the) |
| Atiu | CKAIU | Cook Islands |
| Atla | EEATL | Estonia |