| GetData Pty Ltd | New South Wales |
| Getmee | |
| Getmilk | |
| getNEXT | Victoria |
| Ghostgum Software Pty Ltd | Victoria |
| GHP Tech Pty Ltd | |
| GI Business Database Solutions | Victoria |
| Giant Leap Capital Services Pty Ltd | Victoria |
| Gilmour Space Technologies | Queensland |
| GippsTech Group Pty Ltd | |
| Giraffe Digital Marketing | |
| Girikon, Inc. | |
| 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 |
| Glide Agency | |
| Glintech | New South Wales |
| Global Communication Services | Western Australia |
| Global Health | Victoria |
| Global Mindset | |
| Global Technology Solutions | New South Wales |
| GlobalInfo Pty Ltd | |
| Globalnet Solutions Australia Pty Ltd | Victoria |
| GlobalX | New South Wales |
| Globe Telecom Pty Ltd | Victoria |
| Globechat Communications | Queensland |
| Globital | |
| Globo Logic Pty Ltd | Queensland |
| Gloo Advertising | |
| glyFX | Western Australia |
| Glytrix Technology | |
| GM Multimedia Pty Ltd | Victoria |
| GM Web Designs | Victoria |
| GNA Solutions | |
| Gnomix | South Australia |
| Go Aussie Computers | New South Wales |
| Go Backups | Australian Capital Territory |
| Go Click On | |
| GO Creative Digital Pty Ltd | |
| GO IT | |
| Go1 | Queensland |
| Go4 Multimedia Pty Ltd | New South Wales |
| GOCDO | Tasmania |
| GoHosting Pty Ltd | Australian Capital Territory |
| Going IT Pty Ltd | |