| Timbali Technology Incubator | Mpumalanga |
| TimeLog | Gauteng |
| Timmins Computer Services | Free State |
| Timu Technologies (Pty) Ltd | |
| Titan Creative Group | |
| Titan HRS CC | Gauteng |
| Titan Ice Computer Store | Gauteng |
| titc.io | |
| Titus Corporation CC | Gauteng |
| TMI Collective | Western Cape |
| TMJ Publications | Gauteng |
| TMT Digital | KwaZulu-Natal |
| TNNG | |
| Toner SA | Gauteng |
| Top Drawer Social & Digital Marketing | Gauteng |
| Touchvision | Western Cape |
| Tourplan | Gauteng |
| Tov Studio | |
| Toxzen CC | Gauteng |
| Trade and Lateral Development | |
| Tradepage | KwaZulu-Natal |
| TradeSafe | Gauteng |
| Traffic Brand | Western Cape |
| Transaction Capital Payment Solutions | Gauteng |
| TransLution Software (Pty) Ltd | Gauteng |
| Travelogic | Western Cape |
| Trendify.co.za | Western Cape |
| Triangular X | KwaZulu-Natal |
| Tribulant | North West |
| Triloq Technologies | Western Cape |
| Trinity Designs | Western Cape |
| Triple J Design | |
| Triple S Solutions | Gauteng |
| Trispen Technologies | Gauteng |
| Tristar Technologies | Western Cape |
| Triverse | |
| Truclean | Gauteng |
| truID (Pty) Ltd | Gauteng |
| Trunuty | Gauteng |
| Trusoft Software | Western Cape |
| TruTeq Wireless (Pty) Ltd | Gauteng |
| TRYQIT | |
| Tryqit (Pty) Ltd | |
| TS School | Gauteng |
| TSA Online | KwaZulu-Natal |
| Tshilitech | |
| Tshimologong | Gauteng |
| Tshwane South TVET College | |
| Tshwane University of Technology | Gauteng |
| TshwaneDJe | Western Cape |