| PC Case Gear | Victoria |
| PC Link Professionals Pty Ltd | New South Wales |
| PC Locs | Western Australia |
| PC Quest | New South Wales |
| PC Users Group (ACT), Inc. | Australian Capital Territory |
| PC-Bug Fixer | New South Wales |
| PC-EZ Computer | Queensland |
| PCB World Solutions Pty Ltd | South Australia |
| PCSOFT | New South Wales |
| PDE SEO & Digital Marketing | |
| PDS Code | |
| Peak Solutions | New South Wales |
| PeakXD | Queensland |
| Pearler | New South Wales |
| Pegasus | New South Wales |
| Pegasus Systems Ltd | New South Wales |
| Pegboard Software Pty Ltd | Victoria |
| Pembroke Technology | |
| Pen Computer Systems Pty Ltd | Victoria |
| PentesterLab | Victoria |
| PeoplePulse | New South Wales |
| Pepperit | |
| Pepperstone Group Ltd | Victoria |
| Percept Creative Group | New South Wales |
| Percheron Therapeutics | |
| Percheron Therapeutics | |
| Perfekt | |
| Pernix | South Australia |
| Persian Agency | |
| Persollo Pty Ltd | New South Wales |
| Perth App Developers & Development | |
| Perth Business IT | |
| Perth Linux Users' Group | Western Australia |
| Perth Printer Repairs | Western Australia |
| Perth SEO Agency | Western Australia |
| Perth Sites | Western Australia |
| Perth Web Host.com.au | Western Australia |
| PerthWeb | Western Australia |
| Peter MacCallum Cancer Centre | |
| Phebra Pty Ltd | New South Wales |
| Philboss Design | New South Wales |
| Phinar Software | |
| Phocas Software | New South Wales |
| Phoenix Computer Systems | Tasmania |
| PhoneControl | Western Australia |
| Photech Computers | South Australia |
| Photomapping | |
| Picnam | Victoria |
| PicNet Pty Ltd | New South Wales |
| Piction Digital Image Systems | New South Wales |