| Wildlabs | |
| Wildmind Design | New South Wales |
| Wildmoon | Western Australia |
| Wildwood Concepts | |
| Wiliam Pty Ltd | New South Wales |
| Will Mullins | Queensland |
| William Angliss Institute | |
| Williams Business College | |
| Wiltronics Research Pty Ltd | Victoria |
| Wimmera Software Development | Victoria |
| Winbasic Pty Ltd | Queensland |
| Windale Technologies Pty Ltd | Queensland |
| WinDesk.au | |
| Windpixel | |
| Windsorborn | New South Wales |
| WingArc Australia Pty Ltd | Victoria |
| Winner Computers | New South Wales |
| Wireless 2-Way Pty Ltd | New South Wales |
| Wireless Coverage Solutions | New South Wales |
| Wireless Data Solutions | New South Wales |
| Wireline Group | New South Wales |
| WISDOM | |
| WISE Distribution Systems | Victoria |
| Wise Internet | Victoria |
| WiseTech Global | New South Wales |
| WiseTime | |
| Wisr Finance Pty Ltd | New South Wales |
| Within Reach Software Pty Ltd | New South Wales |
| Wizard Corporate Training & Solutions | Australian Capital Territory |
| Wizard Electronics IT | Western Australia |
| Wizard Web Design | Tasmania |
| WME Australia | Victoria |
| Wollemi Capital Pty Ltd | |
| Women in Information and Communication | Australian Capital Territory |
| Women in Innovation | South Australia |
| Women's Network Australia | Queensland |
| Wonderful | |
| Woocom | Western Australia |
| Woodward IT Pty Ltd | Queensland |
| Woolcock Institute of Medical Research | |
| WordfixerBot | |
| WORKetc Pty Ltd | New South Wales |
| WorkingMouse Pty Ltd | |
| Worktrainweb | Queensland |
| Workventures Ltd | New South Wales |
| World Grlobal Solutions Australia | |
| World Wire Cables (Australia) Pty Ltd | Victoria |
| WorldStack | Australian Capital Territory |
| Worldview | |
| Worley | |