| PentesterLab | Victoria |
| People's Choice Credit Union | South Australia |
| Peoplebank | South Australia |
| PeoplePulse | New South Wales |
| Pepperit | |
| Pepperstone Group Ltd | Victoria |
| Percept Creative Group | New South Wales |
| Pernix | South Australia |
| Persian Agency | |
| Persollo Pty Ltd | New South Wales |
| 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 |
| Pharmaust | Western Australia |
| Pharmaxis Ltd | |
| Phebra Pty Ltd | New South Wales |
| Philboss Design | New South Wales |
| 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 |
| PicNet Pty Ltd | |
| Piction Digital Image Systems | New South Wales |
| Pinnacle IT | Queensland |
| Pioneer Computers | |
| Pioneer Electronics Australia Pty Ltd | Victoria |
| PIP Total IT Solutions | New South Wales |
| PIPE Networks Pty Ltd | Queensland |
| Piper Alderman Management Pty Ltd | South Australia |
| Pitchfast Pty Ltd | |
| Pixel | Queensland |
| Pixel IT Australia | Victoria |
| Pixel Marketing | New South Wales |
| Pixel Palace Pty Ltd | Queensland |
| Pixel Together | |
| Pixeld Pty Ltd | |
| Pixelfire | |
| PixelForce | South Australia |
| PixelStorm | Victoria |
| Pixeltech Design Pty Ltd | Victoria |
| Plain Language Solutions | New South Wales |
| Planet Innovation | Victoria |
| Planet Media Australia Pty Ltd | Australian Capital Territory |
| Planet Software Pty Ltd | South Australia |