| Royer Thompson | |
| RPA360 | |
| RPCGROUP | Ontario |
| RPM Control Company | Ontario |
| RPM Creative, Inc. | Ontario |
| RPM Software | Alberta |
| RR Enterprises Ltd | Ontario |
| RRC Polytech | |
| RS Tec Systems, Inc. | Ontario |
| RSA Software | Quebec |
| RSG Telecom | |
| RSI Group, Inc. | British Columbia |
| RSoft.CA | Quebec |
| rSolutions | Saskatchewan |
| RSS IT Systems, Inc. | British Columbia |
| RTC Havre-Saint-Pierre | |
| RTDS Technologies, Inc. | |
| RTOWN | |
| RTOWN | |
| rTraction | Ontario |
| RtTech Software | New Brunswick |
| RU-LINK | Ontario |
| Rubber Tintan Interactive | Ontario |
| RubberDuck | |
| Rubrika | Quebec |
| RUCBC | British Columbia |
| Rugged Monitoring | |
| Rules Cube | |
| Rum&Code | Quebec |
| Rumble, Inc. | Ontario |
| Run Communications, Inc. | Quebec |
| Run Right Computers | Alberta |
| Run Straight Consulting Ltd | |
| Runes Technologies, Inc. | Quebec |
| Runiter | Ontario |
| Rural Wave Highspeed Wireless Internet | Ontario |
| Rush Ventures Corporation | Ontario |
| Russ Harvey Consulting | British Columbia |
| Rutter, Inc. | Newfoundland and Labrador |
| RVE - Recharge Véhicule Électrique | Quebec |
| RW Digital | |
| RW Networks | British Columbia |
| RWEB par Robin Faucher | Quebec |
| RWGlobal | British Columbia |
| RWN.net | Ontario |
| Rx Networks | British Columbia |
| Ryan Brink | |
| Ryan Cameron | |
| Ryan Computer Services | Ontario |
| Ryan Gulak | British Columbia |