| Robotics Design, Inc. | Quebec |
| Robotics Research and Integration, Inc. | Ontario |
| Robotiq | Quebec |
| Robotnik Managed IT Solutions | |
| Robotnik.com | Nova Scotia |
| Robots & Pencils | Alberta |
| RobotSearch Software, Inc. | Ontario |
| RobotShop, Inc. | Quebec |
| Roca Networks | |
| Rocabro Software Consulting Ltd | Ontario |
| Roch Lambert | Quebec |
| ROCK Networks | Nova Scotia |
| Rock Solid Computer Services | Ontario |
| Rock Solid IT Solutions | Saskatchewan |
| Rock Your Data, Inc. | British Columbia |
| Rocket Digital | Ontario |
| Rocket Doctor, Inc. | Ontario |
| Rocket Innovation Studio, ULC | Ontario |
| Rocket Marketing | |
| Rocket Sales Now | |
| Rocket Science | |
| RocketCloud, Inc. | Ontario |
| RocketRez | |
| RocketRide Games | Quebec |
| Rockhopper Apps | Nova Scotia |
| RockIT Fuel Design & Technology | |
| Rocksoft, Inc. | Quebec |
| Rockwood Software Ltd | |
| Rocky Giroux | |
| Rocky Mountain Software, Inc. | British Columbia |
| Rocscience, Inc. | Ontario |
| Roddis Communications, Inc. | Nova Scotia |
| Rodee.ca | |
| Rodgers International | Ontario |
| Rodlin Instruments, Inc. | Ontario |
| Roger's Computer Technology | Ontario |
| Rogers / Communications Méga-Sat, Inc. | Quebec |
| Rogers Communications | Ontario |
| Rogers Cybersecure Catalyst, Toronto Metropolitan University | |
| Rogue Data | Ontario |
| Rogue Research, Inc. | |
| Rogue Robotics | Ontario |
| Rohde & Schwarz Canada, Inc. | Ontario |
| ROI Digital | |
| ROI Media Works | British Columbia |
| ROI Research on Investment | Quebec |
| Roicians | |
| ROK Software | |
| Roketto | |
| Rollin | |