World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Arrecifes | ARACF | Argentina |
| Arroyo | PRARR | Puerto Rico |
| Arroyo Seco | ARASO | Argentina |
| Arskogssandur | ISASS | Iceland |
| Artemis | GRTEM | Greece |
| Artigas | AQART | Antarctica |
| Arturo Prat | AQAPT | Antarctica |
| Aruanã | BRAUN | Brazil |
| Aruba | AWAUA | Aruba |
| Arun | IDAUN | Indonesia |