| Carrier Code | Carrier Name |
| GUFI | GULF MARITIME AGENCIES INC |
| GUHB | GUTHRIE-HUBNER INCORPORATED |
| GULL | GULL MARITIME CORPORATION |
| GULO | GULF INTERMODAL INC |
| GUNG | GUNGEN DENIZCILIK VE TICARET A S |
| GURU | GURD CORPORATION |
| GUSM | GUSTAVUS MERCANTILE INC |
| GUSO | GOLDEN UNION SHIPPING COMPANY S A |
| GVAM | GRIVA MARITIME CORPORATION |
| GWRQ | GOWER SHIPPING COMPANY |
| GWSN | GREAT WESTERN STEAMSHIP COMPANY |
| GXFE | GIGNOUX, FRED E INC |
| GYAM | GADOT YAM/CHEMSHIP BV |
| GZFQ | GLEFI SHIPPING VII COMPANY LIMITED |
| GZHC | GOLDEN HEIGHTS CORPORATION |
