| GBST | New South Wales |
| GBST Digital | Queensland |
| Geeks On Call | New South Wales |
| Geeks2U Pty Ltd | New South Wales |
| Geekseat | Queensland |
| GeekVillage | Queensland |
| Geekworks | Queensland |
| Geforce Technologies | New South Wales |
| Generation-E | Victoria |
| Generator | Western Australia |
| Genesis Networks | Victoria |
| Genesis Petroleum Technologies | Western Australia |
| Genesis Software Pty Ltd | South Australia |
| Genetic Signatures Ltd | New South Wales |
| Genetic Technologies Ltd | Victoria |
| GeneWorks | South Australia |
| Genie Solutions Pty Ltd | Queensland |
| GenNext Enterprises Pty Ltd | New South Wales |
| Genomics For Life | |
| genomiQa Pty Ltd | Queensland |
| Geoimage Pty Ltd | Queensland |
| Geophysical Software Solutions | Australian Capital Territory |
| George Clinical | New South Wales |
| Geraldton Macintosh User Group | Western Australia |
| Gerry Wagner | |
| GetAProgrammer | New South Wales |
| GetAProgrammer | |
| GetCapital Pty Ltd | New South Wales |
| GetData Pty Ltd | New South Wales |
| getNEXT | Victoria |
| Ghostgum Software Pty Ltd | Victoria |
| GI Business Database Solutions | Victoria |
| Giant Leap Capital Services Pty Ltd | Victoria |
| Gilmour Space Technologies | Queensland |
| Girl Geek Academy | Victoria |
| GIS People Pty Ltd | Queensland |
| Gisborne Internet Services | Victoria |
| GISTec Pty Ltd | New South Wales |
| Gizmodo Australia | |
| Gladesville Computers | New South Wales |
| Gleam.io | Victoria |
| GlenField Digital Group Pty Ltd | Western Australia |
| Glintech | New South Wales |
| Global Communication Services | Western Australia |
| Global Health | Victoria |
| Global Mindset | |
| Global Technology Solutions | New South Wales |
| Globalnet Solutions Australia Pty Ltd | Victoria |
| GlobalX | New South Wales |
| Globe Telecom Pty Ltd | Victoria |