| Telepresence Systems, Inc. | Ontario |
| Telepro | Quebec |
| Telesat | Ontario |
| TeleSoft Systems | British Columbia |
| TeleSolutions | Manitoba |
| Telesto, Inc. | Ontario |
| Telesystem Ltd | Quebec |
| TeleVU Innovation | |
| Telexperts | |
| Telexy Healthcare, Inc. | British Columbia |
| Télicom, Inc. | Quebec |
| Teligence Canada Ltd | British Columbia |
| Telin Systems Ltd | Alberta |
| TeliPlus | Quebec |
| Telium | Ontario |
| Telix, Inc. | Ontario |
| Telizon, Inc. | Ontario |
| Telkoware | |
| Tellez Interactive Studios | British Columbia |
| Tellier Electronics Ltd | Manitoba |
| telMAX | |
| Telnet Communications Ltd | Ontario |
| Telnet Networks, Inc. | Ontario |
| Telo Genomics | |
| TELONIX Communications, Inc. | Ontario |
| Telops, Inc. | |
| telorDesign | Quebec |
| Telpay, Inc. | Manitoba |
| Telsemark IT Developers | |
| Teltech Télécommunication, Inc. | Quebec |
| Telus | British Columbia |
| TELUS Community Safety & Wellness Accelerator | Alberta |
| TELUS Digital | |
| TELUS Global Ventures | British Columbia |
| TELUS Health | |
| Temiscom | |
| Tempest Solutions | |
| Templar Marine Group Ltd | |
| Temple Consulting Group Ltd | British Columbia |
| Tempo Labs | |
| Tempo, Inc. | |
| Temps Expert | |
| Ten Thousand Coffees | Ontario |
| Ten Thousand Foot View | Ontario |
| Ten Volt Consulting | Ontario |
| Tenacious Networks | |
| TenBase, Inc. | Ontario |
| Tenderly | |
| Tenecom | |
| Tenera Care | |