| Rack Technologies | New South Wales |
| Rack World Systems | Victoria |
| RackCorp | New South Wales |
| Rad Robotic Accessories | Western Australia |
| Radial Data | New South Wales |
| Radio Terminal Systems Pty Ltd | Victoria |
| Radiopharm Theranostics | New South Wales |
| RADLogic Pty Ltd | South Australia |
| Raines Internet Solutions | Victoria |
| Raising the Bar | New South Wales |
| Ramcity Pty Ltd | New South Wales |
| Ramp | New South Wales |
| Rampersand | Victoria |
| Random Ramble Pty Ltd | |
| Rank First SEO | Victoria |
| Ranked Ready Websites Services | |
| rankONE | |
| Rankwell Digital Marketing | Victoria |
| Rapid Global | South Australia |
| Rapid Intelligence Pty Ltd | New South Wales |
| RapidFMS Pty Ltd | Victoria |
| RAPT | Queensland |
| Rareiio Pty Ltd | New South Wales |
| Raremedia | Victoria |
| Raster Graphix | Victoria |
| Raw Ideas Pty Ltd | New South Wales |
| Raw Media | New South Wales |
| Raw.Studio | New South Wales |
| RCS Telecommunications Pty Ltd | Queensland |
| RDA Creative | New South Wales |
| Re-Source Hardware | Victoria |
| Re-Source Hardware | |
| REA Group Ltd | South Australia |
| Reach Recruitment | Victoria |
| Reach Robotics | New South Wales |
| ReadCloud Ltd | Victoria |
| Real Time Designs Pty Ltd | New South Wales |
| Real World Technology Solutions | New South Wales |
| Realestate.com.au | |
| Realtime Computing | Western Australia |
| Reason8 Pty Ltd | New South Wales |
| REassist, Inc. | Queensland |
| Reboot IT | Victoria |
| Rebotify | Victoria |
| Recce Pharmaceuticals Ltd | New South Wales |
| Reckon Ltd | New South Wales |
| Recompute | New South Wales |
| Recovery VR Pty Ltd | Australian Capital Territory |
| Red Bilby | Victoria |
| Red Book | Tasmania |