| DB Results | Victoria |
| DBCom | New South Wales |
| DBG Technologies | South Australia |
| DCS Australia Pty Ltd | Victoria |
| DDLS | New South Wales |
| Deakin University | Victoria |
| Deakin University - Department of Information Systems and Business Analytics | Victoria |
| Dealer I.T. | Victoria |
| Decant Digital | South Australia |
| Deciphr | Victoria |
| Decision, Inc. | New South Wales |
| Deepend | New South Wales |
| Defence Bank Ltd | |
| Defencebyte Pty Ltd | New South Wales |
| Dejan Consulting | |
| Delacon | New South Wales |
| Deliverit | Victoria |
| Deloosh Pty Ltd | Victoria |
| Delphi Bank | Victoria |
| Demand Management Systems Pty Ltd | New South Wales |
| Demon-Host | Queensland |
| Demonz | New South Wales |
| Denis Koo | |
| deployable.co | Queensland |
| Depot IT | New South Wales |
| Deputy | New South Wales |
| Descartes Localz | Victoria |
| Descrete Australia Pty Ltd | New South Wales |
| Desert Scientific Software | New South Wales |
| Design By Mouse | New South Wales |
| Design Grid Pty Ltd | |
| Design Industries | Victoria |
| Design Point | Victoria |
| design4u Creations | New South Wales |
| DesignCrowd | New South Wales |
| Designpluz Pty Ltd | New South Wales |
| DesignsenseWeb | Victoria |
| Desygner | Queensland |
| Develop IT | Western Australia |
| Devolution Web Design + Hosting | Victoria |
| DevOps Talks Conference | New South Wales |
| DevStack | Queensland |
| Dewacorp Australia Pty Ltd | |
| Dewar Electronics Pty Ltd | Victoria |
| DFSM Technologies | New South Wales |
| DGreat Solutions | South Australia |
| DHS International Pty Ltd | New South Wales |
| DI Management Services Pty Ltd | New South Wales |
| Diag-Nose Medical | |
| Dialog Pty Ltd | Queensland |