| Abbreviation | Definition |
|---|---|
| TDM | Time-Division Multiplexing (Multiplexer) |
| TDP | Temperature and Dewpoint |
| TDP | Tracking Data Processor |
| TDPS | Technical Data Package System |
| TDR | Technical Design Review |
| TDR | Technical Documentation Report |
| TDR | Test Discrepancy Report |
| TDRR | Test Data Recording and Retrieval |
| TDRS | Telemetry Downlist Receiving Site |
| TDRS | Tracking And Data Relay Satellite |
| TDRSS | Tracking and Data Relay Satellite System |
| TDS | Technology Demonstration Satellite |
| TDS | Test Data System |
| TDSM | Tracking and Data Systems Manager |
| TDU | Thermal Display Unit |
| TDU | Time Display Unit |
| TDV | Test Data Van |
| TE | Time Earliest/Expected |
| TE | Timing Electronics |
| TE | Trailing Edge |