| YNW Web and Apps | South Australia |
| YO.CTO | New South Wales |
| York Street Capital | |
| YOSH | Victoria |
| Young Folks Digital | Victoria |
| YouPay Ltd | Queensland |
| Your Clicks | Queensland |
| Your Cover Letter | |
| Your Creative | Victoria |
| Your Digital Media | |
| Your Practice Online | New South Wales |
| Your Web Dream | |
| Yourwebspace Pty Ltd | New South Wales |
| Youthworks College | |
| Yump Digital | Victoria |
| Yusatech | |
| YZM Technologies Pty Ltd | |
| YZM Technologies Pty Ltd | Western Australia |
| ZAAAX Design | Victoria |
| Zada Solutions | South Australia |
| Zai Australia Pty Ltd | Victoria |
| Zain Digital | Victoria |
| Zalus Digital | New South Wales |
| Zamba Grafix | New South Wales |
| Zammeth Web Development | |
| ZCG Solar | Victoria |
| Zeal Group Pty Ltd | New South Wales |
| Zealed Solutions | New South Wales |
| Zeara | Victoria |
| Zed Systems | New South Wales |
| Zed Technologies | |
| Zedflo Australia | Western Australia |
| Zedmed Pty Ltd | Victoria |
| Zeemo | Victoria |
| Zelda Tech | |
| Zelix Pty Ltd | New South Wales |
| Zeller Australia Pty Ltd | Victoria |
| Zenith Consulting | Western Australia |
| Zenith Energy Pty Ltd | |
| Zenith Information Systems Pty Ltd | New South Wales |
| Zenith Investment Partners Pty Ltd | Victoria |
| ZenityAI | |
| Zenneo Design | Australian Capital Territory |
| Zeno IT | New South Wales |
| Zenshifts Holdings Pty Ltd | New South Wales |
| Zentrix | |
| Zenva Pty Ltd | |
| Zepto Payments Pty Ltd | New South Wales |
| Zerman On Net | South Australia |
| Zero Latency VR | Victoria |