| Wizard Electronics IT | Western Australia |
| Wizard Web Design | Tasmania |
| WME Australia | Victoria |
| Women in Information and Communication | Australian Capital Territory |
| Women in Innovation | South Australia |
| Women's Network Australia | Queensland |
| Woocom | Western Australia |
| Woodward IT Pty Ltd | Queensland |
| WordfixerBot | |
| WORKetc Pty Ltd | New South Wales |
| Worktrainweb | Queensland |
| Workventures Ltd | New South Wales |
| World Grlobal Solutions Australia | |
| World Wire Cables (Australia) Pty Ltd | Victoria |
| WorldStack | Australian Capital Territory |
| Worley | |
| WOTSO Ltd | New South Wales |
| WP Melbourne | Victoria |
| Wrappt | Queensland |
| Wuit Pty Ltd | |
| WWWalker Web Development Pty Ltd | New South Wales |
| Wyntec Pty Ltd | Queensland |
| X Spaces Pty Ltd | New South Wales |
| X-Team | Victoria |
| X4000 Communications Pty Ltd | |
| XAM Consulting | New South Wales |
| Xari Group | Queensland |
| XBC Business Technology | Queensland |
| Xceed Pty Ltd | Victoria |
| XCOM | Queensland |
| XEN Systems | New South Wales |
| Xenabler | New South Wales |
| Xenex Media | Queensland |
| Xenon Systems Pty Ltd | Victoria |
| Xerta | New South Wales |
| Xfive.co Pty Ltd | Victoria |
| Xflow | |
| XGameDev Pty Ltd | |
| xGrowth Pty Ltd | Victoria |
| XII Pty Ltd | Victoria |
| Xnet IT | New South Wales |
| Xoom Digital | New South Wales |
| Xpanda Media Pty Ltd | New South Wales |
| Xparx Computing | Western Australia |
| Xplor Education | Victoria |
| XR:WA | Western Australia |
| Xtreme.com.au Pty Ltd | Queensland |
| Xugar | Victoria |
| XWP.co Pty Ltd | Victoria |
| Yabb | New South Wales |