| Blue Star Direct | New South Wales |
| Blue Zoo | Western Australia |
| Blueblood Solutions | Australian Capital Territory |
| Bluechiip Ltd | |
| BlueChilli | New South Wales |
| BlueDot | |
| BlueFish Strategic Planning & Marketing | |
| Bluegem | Western Australia |
| BlueReef Technology | |
| BlueScopeX | |
| BlueShield Technologies Pty Ltd | Victoria |
| Blueshyft Pty Ltd | New South Wales |
| BlueSky Digital Labs | |
| BlueSoap | |
| Bluestarfish Web Design | New South Wales |
| Bluewire Media Pty Ltd | Queensland |
| BMC | Western Australia |
| BMYG Asset Management Pty Ltd | Victoria |
| BNS Group | Australian Capital Territory |
| Boab Ventures | |
| Boileau | South Australia |
| Bold Digital | South Australia |
| Bold SEO | |
| Boltblue Web and Marketing | Western Australia |
| Bond University | Queensland |
| Bonfire Digital Pty Ltd | |
| Bonjoro | New South Wales |
| Bonsai Media | Queensland |
| Bonser Design | |
| Bonza Mobile Computer Repairs | Queensland |
| Bookeo Pty Ltd | New South Wales |
| BoostIT Computer Services Pty Ltd | Queensland |
| Boss Communications & Networks | Victoria |
| Boston Software Pty Ltd | Victoria |
| Botanix Pharmaceuticals Ltd | |
| Botly | |
| BotsCrew | |
| Bottrell Media | |
| Bouncing Orange | Western Australia |
| Bound by Story | |
| Box Hill Institute | |
| Boylen+ | |
| Brad Hauck | Queensland |
| Braemac Pty Ltd | New South Wales |
| Brain Stream Australia Pty Ltd | New South Wales |
| Brainfish Pty Ltd | |
| Brainium Labs | |
| Braintree Communications Pty Ltd | Queensland |
| Brambles | |
| Bramp Pty Ltd | New South Wales |