| Globechat Communications | Queensland |
| Globo Logic Pty Ltd | Queensland |
| Gloo Advertising | |
| glyFX | Western Australia |
| GM Multimedia Pty Ltd | Victoria |
| GM Web Designs | Victoria |
| Gnomix | South Australia |
| Go Aussie Computers | New South Wales |
| Go Backups | Australian Capital Territory |
| Go1 | Queensland |
| Go4 Multimedia Pty Ltd | New South Wales |
| GOCDO | Tasmania |
| GoHosting Pty Ltd | Australian Capital Territory |
| Goji Web | |
| Gold Coast Design Studio | Queensland |
| Gold Coast TechSpace | Queensland |
| Golden Age Media | New South Wales |
| Golden City | Western Australia |
| GoLogic | Queensland |
| Gomeeki | |
| Good Gear Guide Australia | New South Wales |
| Goodson | New South Wales |
| Goop Digital | |
| Gooroo Technical Services | New South Wales |
| goPassport | Queensland |
| GopherConAU | New South Wales |
| Gore Research Pty Ltd | South Australia |
| Governance Manager | |
| Government of South Australia Department for Innovation and Skills | South Australia |
| GPSat Systems Australia Pty Ltd | Victoria |
| GPSoftware | Queensland |
| GR-TEK Computers | New South Wales |
| Graf-X Design Suite | Queensland |
| Grand Pacific CRO | New South Wales |
| Grant Wallis Designs | New South Wales |
| Grantronics Pty Ltd | New South Wales |
| Gravit | |
| Gravity Challenge | Victoria |
| GRC Solutions | New South Wales |
| Green Web Marketing | New South Wales |
| GreenBizCheck | New South Wales |
| GreenCollar | New South Wales |
| GreenLight Clinical Pty Ltd | New South Wales |
| Greenlight ITC | New South Wales |
| GreenMoney | |
| GreenOrbit | Victoria |
| Greentram Software Pty Ltd | Victoria |
| Gridsight | New South Wales |
| Griffith University | Queensland |
| Griffith University - School of Information and Communication Technology | Queensland |