| Abbreviation | Definition |
|---|---|
| TLS | Top Level Specification |
| TLS | Transport Layer Security |
| TLTM | Trusted Logic Test Manager |
| TLU | Top Level Unit |
| TLW | Transmission Line For Windows |
| TM | Tools For Mime |
| TMAP | Test Management Approach |
| TMBS | Total Metering and Billing Systems |
| TMC | Theta Music Composer |
| TMC | Tini Mutation Compiler |
| TMMS | TechStudio Mobile Marketing Solutions |
| TMMS | Trend Micro Mobile Security |
| TMMS | Trust Mineral Management System |
| TMPL | TeMPLate |
| TMS | Terminal Management System |
| TMSA | The Management Software Association |
| TMT | Turk Mukavemet Teskilati |
| TN | Turbo Navigator |
| TNA | Tcl Namespace Analyzer |
| TNJ | The Next Junk |