| RavenMedia | |
| Ravenshoe | Ontario |
| Raw Media, Inc. | British Columbia |
| Raxxos Technology, Inc. | |
| Raya Therapeutic | |
| Rayman Solutions | |
| Raymor Industries, Inc. | |
| Raysoft, Inc. | Quebec |
| Rayssoft | Ontario |
| RaysTech Services | |
| Raytron Ltd | |
| Razor Creative Solutions, Inc. | Ontario |
| Razor Sharp Consulting | |
| RazorPlan | |
| Razzaks Computers, Inc. | Ontario |
| RB Anderson Ltd | British Columbia |
| RBC Dominion Securities, Inc. | |
| RBC Ventures, Inc. | Ontario |
| RBM, Inc. | Ontario |
| RBT Electrical & Automation | Ontario |
| RC Design, Inc. | |
| RC Technologies | |
| RCC Electronics Ltd | Ontario |
| RCC Graphic Designs | Ontario |
| RCI Wireless Control | Quebec |
| RCM Technologies Canada Corporation | Ontario |
| RCS Canada | British Columbia |
| RCSPL Canada, Inc. | |
| RD Consulting | |
| RDA Technologies, Inc. | Ontario |
| RDC Networks | Ontario |
| RDG Électronique, Inc. | |
| RDI, Inc. | Quebec |
| RDM Corporation | Ontario |
| RDP Consultants, Inc. | Quebec |
| Re-Solved | Ontario |
| RE:Action Marketing Services Ltd | Ontario |
| Reach First | Alberta |
| Reach Web Experts | Ontario |
| ReACT Technologies | Ontario |
| Reaction | |
| Reaction Dynamics | |
| Reaction Grafix | Ontario |
| Reaction Internet | Ontario |
| Reaction Software, Inc. | |
| Reactive Designs | Saskatchewan |
| Read Consulting Services | Ontario |
| Ready Flow | |
| Ready Plan Go | |
| Ready Set Go | |