| Systèmes Sarotech, Inc. | Quebec |
| Systemgroup, Inc. | Quebec |
| Systemico Technologies | |
| Systemix Solutions | |
| Systémix, Inc. | Quebec |
| SystemMacs | Ontario |
| Systems Interactive | Ontario |
| Systems With Intelligence, Inc. | |
| Systemscope, Inc. | Ontario |
| Sytex Ltd | Manitoba |
| Szeto Technologies, Inc. | Quebec |
| T&G Web Solutions | Alberta |
| T&X Trading, Inc. | Quebec |
| T-Airtech, Inc. | Quebec |
| T-Globe Technology Bridge, Inc. | British Columbia |
| T-Globe, Inc. | |
| T-Mentor, Inc. | Quebec |
| T-NET, Inc. | British Columbia |
| T-Rize Group Corporation | |
| T.E.S. Contract Services, Inc. | Ontario |
| T0.technology | |
| T2 Media Group | Alberta |
| T4G Ltd | Ontario |
| TablePlus, Inc. | |
| Tablo | Ontario |
| Tablz | |
| Tabula | |
| TACT Conseil | Quebec |
| Tactic Télécom | Quebec |
| Tactica Interactive | Manitoba |
| Tactical Business Corporation | Ontario |
| Tactik é Astus | Quebec |
| Tactika, Inc. | Quebec |
| TactikMedia | Quebec |
| Tadashi Design | British Columbia |
| Tadum | |
| Taftan Data | British Columbia |
| TAG Business Solutions | |
| TAG Computer Services | Ontario |
| Tag Design Co. | British Columbia |
| Tagnet Communications | Quebec |
| Taïga Web Communications | Quebec |
| Taiho Pharma Canada, Inc. | |
| Tailbase | Quebec |
| Tailored Genes | |
| Tailscale, Inc. | |
| Tailwind Transportation Software Ltd | British Columbia |
| Taino Systems | Quebec |
| TainoSystems, Inc. | |
| TaiRox | |