| Platina IT Technologies | Ontario |
| Platinum Design | |
| Platinum Multimedia | British Columbia |
| Platinum Synergy Group, Inc. | Ontario |
| PlatinumPC | Ontario |
| PLATO Testing | |
| Platypi Designs, Inc. | Ontario |
| Play.Works | Ontario |
| Playbrains | Ontario |
| Playground, Inc. | Ontario |
| PlayOn Media | |
| Playstone Solutions | Ontario |
| Playtime Service | British Columbia |
| Plaza Ventures | Ontario |
| Plazus Technologies, Inc. | British Columbia |
| PLC Info | New Brunswick |
| Pleasant Solutions | Ontario |
| Plenty Host, Inc. | Ontario |
| Pleora Technologies, Inc. | Ontario |
| Plextec, Inc. | Ontario |
| Plexxis | Ontario |
| Plogg Solutions | Quebec |
| Plooto, Inc. | Ontario |
| Plosz IT Solutions | Alberta |
| Plotly | Quebec |
| Plum Communcations, Inc. | Ontario |
| Plum Creative Works | Newfoundland and Labrador |
| Plum.io, Inc. | |
| Pluri-com | Quebec |
| Plurilogic, Inc. | Quebec |
| Pluritronic | |
| Plus Humain | Quebec |
| PlusMinds | |
| Pluvo | |
| Pluvo AI Consulting, Inc. | Ontario |
| PM Computer Services | Ontario |
| PM Consulting | |
| PM SCADA Cyber Defense | Quebec |
| PM4IT | Manitoba |
| PMC | Ontario |
| PME MTL | |
| PMG Intelligence | |
| PMG Technologies | |
| PMR Professional Services, Inc. | Ontario |
| PMX Dynamics | |
| PNI Digital Media | British Columbia |
| PnuVax, Inc. | |
| Pocket Connections | Alberta |
| Pocket Finance | |
| Pocket Social | |