| Av-Comm | New South Wales |
| Avance Clinical | South Australia |
| Avant Marketing | New South Wales |
| Avante IT | New South Wales |
| Avantgarde Technologies | Western Australia |
| Avarni | |
| AVCorp | |
| Avecho Biotechnology Ltd | Victoria |
| Avenue Bank Ltd | New South Wales |
| Avenue Digital | Victoria |
| Aviato Consulting Pty Ltd | |
| Avinet Pty Ltd | South Australia |
| Aviso IT | Western Australia |
| Avocado Consulting Pty Ltd | New South Wales |
| Avolution Pty Ltd | New South Wales |
| Avondale University College Ltd | New South Wales |
| Award One Technology Pty Ltd | Victoria |
| Aware IM | New South Wales |
| Awasu Pty Ltd | |
| Away Digital Teams | |
| AWD | Victoria |
| AWD Digital | Victoria |
| Axiflux Pty Ltd | Victoria |
| Axiom Design Partners | Western Australia |
| Axios IT | South Australia |
| Axxin | Victoria |
| Aztech Integrated Systems | Queensland |
| Azupay Trading Pty Ltd | New South Wales |
| B Online Learning | New South Wales |
| B.E.C. Manufacturing Pty Ltd | Queensland |
| BA Creative | Queensland |
| Bake That Cake Pty Ltd | Queensland |
| Balance Internet | Victoria |
| Ballarat Technology Park | Victoria |
| Ballarat Web Hosting | Victoria |
| Bam Creative | Western Australia |
| Bam Web Solutions Pty Ltd | New South Wales |
| Bambrick Media | Queensland |
| Bang Online Marketing | Western Australia |
| Bank of Melbourne | Victoria |
| Bank of Queensland Ltd | Queensland |
| BankSA | South Australia |
| Banxa Holdings, Inc. | |
| Banyan Media | Queensland |
| Baraja Pty Ltd | New South Wales |
| Barcode Australia | New South Wales |
| Barcode Logic | New South Wales |
| Bare Metal Software | Queensland |
| BarNet Networks Pty Ltd | New South Wales |
| Barolin Web Design | Queensland |