| Abbreviation | Definition |
|---|---|
| GBE | Globe Uranium Ltd |
| GBG | Gindalbie Metals Ltd |
| GBGKOB | Gindalbie Metals Ltd |
| GBGKOP | Gindalbie Metals Ltd |
| GBI | Genera Biosystems Ltd |
| GBM | Greater Bendigo Mines Ltd |
| GBMOA | Greater Bendigo Gold Mines Limited |
| GBP | Global Petroleum Ltd |
| GBT | GBST Holdings Ltd |
| GBX | GB Energy Ltd |
| GBZ | GBM Resources Ltd |
| GBZOA | Gbm Resources Limited |
| GCG | Greencap Ltd |
| GCL | Gloucester Coal Ltd |
| GCN | GoConnect Ltd |
| GCR | Golden Cross Resources Ltd |
| GCS | Global Construction Services Ltd |
| GCY | Gascoyne Resources Limited |
| GDA | Gondwana Resources Ltd |
| GDAOB | Gondwana Resources Ltd |