| Prairiefusion.com | Saskatchewan |
| Pratt & Whitney Canada | |
| Pratt Web Services | British Columbia |
| Praxis Design Studios | Alberta |
| PRECICAD | Quebec |
| PRECICOM Technologies, Inc. | Quebec |
| Precidia Systems | Ontario |
| PreciKam | |
| Precise Design | |
| Precise-ITC | Ontario |
| Preciseley Microtechnology Corporation | Alberta |
| Precision ADM, Inc. | |
| Precision AI, Inc. | |
| Precision Camera Repair Ltd | Manitoba |
| Precision Electronics Corporation | Ontario |
| Precision JLM, Inc. | |
| Precision Nanosystems | |
| Precision SR&ED | Ontario |
| PrecisionBioLogic, Inc. | |
| PrecisionERP, Inc. | Ontario |
| PrecisionOS | |
| Predictive Analytics | Ontario |
| Predictive Success Corporation | |
| Prefix Aerospace | Quebec |
| Prelotech IT Consulting | |
| PremiceSoft | Quebec |
| Premier Computer Care, Inc. | British Columbia |
| Premium Business Solutions | |
| Premium Staffing Solutions | |
| Premsoft Solutions, Inc. | |
| Presagis | Quebec |
| Prescient Digital Media | Ontario |
| Presence-Net | Quebec |
| Present | Quebec |
| Presentation Plus | Ontario |
| Presidium Network Operations Consultants | British Columbia |
| PresiNET, Inc. | British Columbia |
| Presponse Technologies, Inc. | |
| PressHero.co | |
| PressPulse | Ontario |
| PressWork | Quebec |
| Prestige Marketing | |
| Prestige Online Services | Ontario |
| Prestige Web | |
| Pretzel Logic | Ontario |
| Previse, Inc. | Ontario |
| PreVu3D, Inc. | Quebec |
| Prevue HR Systems, Inc. | British Columbia |
| Prextra | Quebec |
| Price Industries | |