| Dicker Data Ltd | New South Wales |
| Diferati Solutiosn | New South Wales |
| Different Technologies Pty Ltd | Victoria |
| Digicor | Victoria |
| DigiMarCon Australia | |
| Digital Chameleon | New South Wales |
| Digital Domination | |
| Digital Dreams | New South Wales |
| Digital Freak | |
| Digital Garden Pty Ltd | New South Wales |
| Digital Guru Pty Ltd | New South Wales |
| Digital Health Festival | Victoria |
| Digital Hitmen Pty Ltd | |
| Digital Innovation Futures Victoria | Victoria |
| Digital Labs | South Australia |
| Digital Learning and Teaching Victoria | Victoria |
| Digital Marketing Group | |
| Digital Marketing Tribe | South Australia |
| Digital Meal | Western Australia |
| Digital Muscle Ltd | New South Wales |
| Digital Muscle Ltd | New South Wales |
| Digital Next | Victoria |
| Digital Organics | Queensland |
| Digital Pacific | New South Wales |
| Digital Perth Agency | Western Australia |
| Digital Playhouse Pty Ltd | Queensland |
| Digital Presence | New South Wales |
| Digital Squad | Victoria |
| Digital Transformation Agency | Australian Capital Territory |
| Digital Union Pty Ltd | Western Australia |
| Digital Village Pty Ltd | New South Wales |
| Digital White Spaces | Victoria |
| Digitalmaas | New South Wales |
| DigitalZoop | New South Wales |
| Digiwhiz | Victoria |
| Dilate Digital | Western Australia |
| Dimensionāµ | Victoria |
| Dimerix | Victoria |
| Dingbat Studios Pty Ltd | South Australia |
| DINGO Software Pty Ltd | Queensland |
| Dingosoft | New South Wales |
| Dinkum Web Solutions | New South Wales |
| DInsight | Victoria |
| Diraq | New South Wales |
| Direct Clicks | New South Wales |
| Direct Communications | Western Australia |
| Direct Marketing Software | New South Wales |
| Directions Technology | Queensland |
| Directory.com.au | New South Wales |
| Discount Domain Name Services | Victoria |