| Abbreviation | Definition |
|---|---|
| CWE | Carnegie Wave Energy Limited |
| CWG | Central West Gold NL |
| CWK | Coalworks Ltd |
| CWN | Crown Ltd |
| CWNKMP | Crown Limited |
| CWNKOA | Crown Limited |
| CWNKOP | Crown Limited |
| CWNKRA | Crown Limited |
| CWP | Cedar Woods Properties Ltd |
| CXD | Cathrx Ltd |
| CXM | Centrex Mentals Ltd |
| CXN | ConnXion Ltd |
| CXO | Core Exploration Limited |
| CXUO | Cauldron Energy Limited |
| CXX | Cradle Resources Limited |
| CXY | Cougar Energy Ltd |
| CYA | Century Australia Investments Ltd |
| CYC | Cyclopharm Ltd |
| CYG | Coventry Group Ltd |
| CYL | Catalyst Metals Ltd |