| Abbreviation | Definition |
|---|---|
| GRB | Gage Road Brewing Co Ltd |
| GRG | Grg International Ltd |
| GRGO | Grg International Ltd |
| GRK | Green Rock Energy Ltd |
| GRKO | Green Rock Energy Limited |
| GRM | Global Resources Corporation Limited |
| GRMO | Global Resources Corporation Limited |
| GRR | Grange Resources Ltd |
| GRV | Greenvale Mining NL |
| GRVCA | Macquarie Goodman Group |
| GRVO | Greenvale Mining NL |
| GRY | Gryphon Minerals Ltd |
| GRYKOB | Gryphon Minerals Limited |
| GRYKOP | Gryphon Minerals Limited |
| GSC | Global Geoscience Ltd |
| GSCO | Global Geoscience Ltd |
| GSE | Goldsearch Ltd |
| GSF | Global Seafood Australia Ltd |
| GTE | Great Western Exploration Ltd |
| GTEO | Great Western Exploration Ltd |