| Abbreviation | Definition |
|---|---|
| REF | Reverse Corp, LTD. |
| REH | Reece Australia Ltd |
| RER | Regal Resources Ltd |
| RES | Resource Generation Ltd |
| REX | Regional Express Holdings Ltd |
| REY | Rey Resources Ltd |
| REZ | Resources & Energy Group Limited |
| RFE | Red Fork Energy Ltd |
| RFG | Retail Food Group Ltd |
| RFL | Rubik Financial Ltd |
| RFT | Rectifier Technologies Ltd |
| RFV | Rift Valley Resources Limited |
| RFX | Redflow Limited |
| RGM | RGM (Robyn Gardiner Morrison) Media, Limited; now called OneNorth |
| RGP | Refresh Group Ltd |
| RGU | Regalpoint Resources Limited |
| RGUO | Regalpoint Resources Limited |
| RHC | Ramsay Health Care Ltd |
| RHCKMA | Ramsay Health Care Limited |
| RHCKMP | Ramsay Health Care Limited |