| Total Spectrum Software | Nova Scotia |
| Total Support Solutions | |
| Total Web Solution | Ontario |
| TotalPC | Alberta |
| Totaltek Solutions, Inc. | Ontario |
| Totem Acoustic | Quebec |
| Totema Studio | |
| Toto Digital | |
| Touchbase | Quebec |
| TouchBistro | Ontario |
| Touchstone Services | |
| TouchTunes Music Corporation | Quebec |
| ToughtWorks, Inc. | Ontario |
| Tourisme Cantons-de-l'Est | |
| Tower graphics | British Columbia |
| Towerlogic | Quebec |
| TownSuite | |
| TPG Technology Consulting | Ontario |
| TPS Software | |
| TR Electronic | Ontario |
| TR Technology | Quebec |
| Tracautomation Systems, Inc. | Quebec |
| TRACC IT Solutions | |
| Trace Circuits | Ontario |
| Tracemetric Software Development, Inc. | |
| TraceNet | |
| Tracer Digital | |
| Track 21 Graphix, Inc. | Ontario |
| Track Group | Nova Scotia |
| Tracker | Ontario |
| Tracker Software Products (Canada) Ltd | British Columbia |
| Trackstar Web Design | |
| TrackTech Électroniques, Inc. | |
| TrackTik | Quebec |
| Tracktile | |
| TracRite Software, Inc. | Manitoba |
| Tracs Computer repair service and sales | Alberta |
| Traction Complete | |
| Traction Conference | British Columbia |
| Traction Creative | British Columbia |
| Traction Guest | British Columbia |
| Traction House | |
| Tractr | Quebec |
| TRACX | |
| TradableBits Media, Inc. | British Columbia |
| TradePros | |
| TRADER Corporation | British Columbia |
| Tradigital | British Columbia |
| Trading Central | |
| Tradogram, Inc. | |