| Abbreviation | Definition |
|---|---|
| TD | Transmit Data |
| TDAB | Telecommunication Development Advisory Board |
| TDAP | Telecommunication Devices Access Program |
| TDAP | Telecommunications Devices Access Program |
| TDAP | Telecommunications Devices Access Programs |
| TDB | Technology Development Board |
| TDB | Telecommunication Development Bureau |
| TD-CDMA | Time Division, Code Division Multiple Access |
| TDD | Telecommunications Device for the Deaf |
| TDF | Telecommunications Development Fund |
| TDM | Telecom Decision Makers |
| TDMA | Time Division Multiple Access |
| TDMM | Telecommunications Distribution Methods Manual |
| TDMT | Transfer Driven Machine Translation |
| TDOA | Time Difference Of Arrival |
| TDP | Tag Distribution Protocol |
| TDPD | Telecommunications Data Protection Directive |
| TDR | Time Domain Reflectometer |
| TDR | Transaction Data Report |
| TDSA | TELCO (TELephone COmpany) Distribution Support Architecture |