| Pumpkin Safari | |
| Punchbuggy | |
| Puppy Linux News | Western Australia |
| Pure Bold | |
| Pure Security | Victoria |
| pureCDM | Victoria |
| PureCDM Pty Ltd | Victoria |
| Purge Digital | |
| Purplesoft | |
| Purpose Built Software Pty Ltd | New South Wales |
| PushStart | |
| PWD | Western Australia |
| PyCon AU | South Australia |
| PyCon Australia | |
| Pyn | New South Wales |
| Q Interactive | New South Wales |
| Q-CTRL | New South Wales |
| Q-Imaging Australia Ltd | Queensland |
| Q2 Solutions | Queensland |
| QBiotics Group Ltd | Queensland |
| QC Digital | |
| Qclick Web Design | |
| QIC | |
| QIMR Berghofer Medical Research Institute | |
| QiQ Communications Pty Ltd | New South Wales |
| QL Tech | |
| QML Pathology | |
| QOVES | New South Wales |
| QR Solutions | |
| Qsic Pty Ltd | Victoria |
| Qsome | Victoria |
| QSPectral Systems Pty Ltd | Queensland |
| Qtec Systems | Victoria |
| Quad Digital Pty Ltd | |
| QualityTrade | |
| QuantHouse | Victoria |
| Quantium | New South Wales |
| Quantum | New South Wales |
| Quantum Brilliance | Australian Capital Territory |
| Quantum Information Technology | Victoria |
| Quantum Software Solutions Pty Ltd | New South Wales |
| Quantum Technology Lab | Queensland |
| QuantumLinx | |
| QuantumTX | |
| Quasar Satellite Technologies Pty Ltd | New South Wales |
| Qubasoft Pty Ltd | |
| Qubisoft Pty Ltd | Victoria |
| Qudos Mangement | Queensland |
| Queensland Computers | Queensland |
| Queensland Government Open Data Portal | Queensland |