| Apple Chadstone | Victoria |
| Apple Charlestown | New South Wales |
| Apple Chatswood Chase | New South Wales |
| Apple Chermside | Queensland |
| Apple Doncaster | Victoria |
| Apple Hornsby | New South Wales |
| Apple Penrith | New South Wales |
| Apple Perth City | Western Australia |
| Apple Robina | Queensland |
| Apple Southland | Victoria |
| Apple Sydney | New South Wales |
| Apple-Q | Queensland |
| Application Service Provider Pty Ltd | South Australia |
| Appliquette | South Australia |
| Appomate | Victoria |
| Apps Firm | New South Wales |
| Apps People | Western Australia |
| Apps.lk | New South Wales |
| Appscore | Victoria |
| AppsForOps Pty Ltd | New South Wales |
| Appsquare | New South Wales |
| Apptractive Pty Ltd | New South Wales |
| AppXperts | Tasmania |
| APRG | Queensland |
| Apromore Pty Ltd | Victoria |
| APTUS Cloud Technology | New South Wales |
| Aqua-Gen | |
| Aquarian Technologies | Victoria |
| Arab Bank Australia Ltd | |
| Aravax | Victoria |
| Arawak | Victoria |
| Arc Business Partners | New South Wales |
| ARC Centre for Excellence in Bioinformatics | Queensland |
| ARC Computers | New South Wales |
| Arcadian Digital | Victoria |
| Archa Ltd | Victoria |
| Archangel Ventures Pty Ltd | Victoria |
| Archistar Pty Ltd | New South Wales |
| Arctic Intelligence | New South Wales |
| Ardacious Pty Ltd | Queensland |
| Ardeun Biometrics Corporation | New South Wales |
| ARES | New South Wales |
| Argent | New South Wales |
| Argo Investments Ltd | South Australia |
| Argon Design | South Australia |
| Arising Technology Systems Pty Ltd | Australian Capital Territory |
| Aristocrat Technologies Australia Pty Ltd | New South Wales |
| Arkade | Victoria |
| ARKNET Pty Ltd | |
| ARKPC.com.au | |