| Talman Pty Ltd | New South Wales |
| Talu Ventures | Queensland |
| Tambla | New South Wales |
| Tanda | Queensland |
| Tandem Graphic Design Pty Ltd | South Australia |
| Tang Online Shop | Western Australia |
| Tangent Design | Victoria |
| Tantalus Media | Victoria |
| Tapscape | Western Australia |
| Tasmian Printer Cartridge | Tasmania |
| TASMU Accelerator | |
| TassieOnline | |
| Tattam Software Enterprises Pty Ltd | Tasmania |
| TatvaSoft Australia Pty Ltd | |
| Tavultesoft | Tasmania |
| Tax Institute | |
| Tax Leopard | |
| TaxBot.ai | Victoria |
| TaxFitness | |
| 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 |
| Teachbea | |
| Teachers' Choice Software | Queensland |
| Team Brookvale | |
| Team Computing Australia Pty Ltd | New South Wales |
| Team Evolution | Western Australia |
| Team Marketing Agency | |
| 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 |
| Techcronus Australia Pty Ltd | |
| TechDilation Pty Ltd | |
| TechDilation Pty Ltd | |