| Tasmian Printer Cartridge | Tasmania |
| TassieOnline | |
| Tattam Software Enterprises Pty Ltd | Tasmania |
| Tavultesoft | Tasmania |
| Tax Institute | |
| TaxBot.ai | Victoria |
| Taylored Media | New South Wales |
| Taylors College | |
| TBG Diagnostics Ltd | Victoria |
| TDA Web Design | Victoria |
| TDF Cloud Services | New South Wales |
| TDVC Pty Ltd | South Australia |
| Teachers' Choice Software | Queensland |
| Team Computing Australia Pty Ltd | New South Wales |
| Team Evolution | Western Australia |
| Team Technology | Western Australia |
| Team4 Digital | |
| Teamgo Pty Ltd | South Australia |
| TeamTech Pty Ltd | Victoria |
| TeamUp Digital Australia | Victoria |
| Tec5 | New South Wales |
| Tech 2U Internet Services | New South Wales |
| Tech Data Cloud Solutions | New South Wales |
| Tech for Humanity | |
| Tech Guide | New South Wales |
| tech2 | New South Wales |
| Techart | Queensland |
| Techboard | |
| TechBrain | Western Australia |
| TechBug Computer Consultants Pty Ltd | Queensland |
| Techbuy Australia | New South Wales |
| TechEquipt | New South Wales |
| TechInnovate | Victoria |
| Technelysium | Queensland |
| Technetics Consulting Pty Ltd | Victoria |
| Technetics Data Recovery Pty Ltd | Victoria |
| Technic Pty Ltd | Tasmania |
| Technica | Queensland |
| Technicalities | Victoria |
| Techniche APAC Pty Ltd | Queensland |
| Technium Services Pty Ltd | Victoria |
| Techno Impact Pty Ltd | New South Wales |
| Technogeek | Queensland |
| Technology Industry Association | Western Australia |
| Technology Leads Pty Ltd | New South Wales |
| Technology Matters | Victoria |
| Technology Park Adelaide | South Australia |
| Technology Park Bentley | Western Australia |
| Technology Park Bentley WA | Western Australia |
| TechnologyFX | New South Wales |