| Producnet.ca | Quebec |
| Product Hunt Toronto | Ontario |
| Product-Led, Inc. | |
| Production Électronique, Inc. | Quebec |
| Productions RVA, Inc. | Quebec |
| Productique Québec | Quebec |
| Produktiv | |
| Profectio Enterprises Ltd | |
| Professional Computer Management, Inc. | Ontario |
| Professional Computer Services | Saskatchewan |
| Professional Excel Solutions | |
| Professional IT Solution | Ontario |
| Professional SEO Services | |
| Professional Software Developers, Inc. | Alberta |
| Profience Professional Skills Development | Ontario |
| Profilio, Inc. | |
| Profilium | Quebec |
| Profit Parrot | |
| Profit Solutions International, Inc. | Ontario |
| Profit Systems, Inc. | Saskatchewan |
| Profitek | British Columbia |
| ProfitPoint | Ontario |
| Profitual | |
| Profitworks | |
| Proflash Technologies International, Inc. | Quebec |
| Profound Medical Corporation | |
| Profusion Technologies Corporation | British Columbia |
| Prog4biz Software Ltd | Ontario |
| Progel, Inc. | Quebec |
| Progeny Software, Inc. | Nova Scotia |
| Progesys, Inc. | |
| Progi | Quebec |
| Progi-Média, Inc. | Quebec |
| ProgiClix | Quebec |
| Progident | Quebec |
| Progima | |
| Progistyl, Inc. | Quebec |
| Progitech DM / Centre Hi-Fi Roberval | |
| Progitech, Inc. | Quebec |
| Progitek, Inc. | Quebec |
| Programica | |
| Programmable Control Systems Ltd | Ontario |
| Programmation Al, Inc. | |
| Programmation Ultra Ltée | Quebec |
| Progratech | Quebec |
| PROGRESS Marketing, Inc. | British Columbia |
| Progressa Financial, Inc. | |
| Progression Live | Quebec |
| Progression3, Inc. | Quebec |
| Progressive Automations | British Columbia |