World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Green Bay | USGRB | United States of America (the) |
| Green Islands | PGGEI | Papua New Guinea |
| Green Town | USFWZ | United States of America (the) |
| Green Turtle Cay | BSGTC | Bahamas |
| Greenboro | USGEB | United States of America (the) |
| Greencastle | GBGNC | United Kingdom |
| Greencastle | IEGRE | Ireland |
| Greenhead | AUGRH | Australia |
| Greenock | AUGRK | Australia |
| Greenock | GBGRK | United Kingdom |