| Abbreviation | Definition |
|---|---|
| TCO | Telecommunications Certification Officer |
| TCP | Terran Confederation Pilot |
| TCS | Technical Customer Service |
| TD | Tech Dude |
| TD | Technical Director |
| TD | Test Director |
| TD | Tour Director |
| TD | Truss Designer |
| TD | Turabi Designer |
| TDA | Tactile Digital Assistant |
| TDC | Total Direct Compensation |
| TDE | Truss Design Engineer |
| TDES | Temporary Data Entry Staff |
| TDJ | Truck Driving Job.com |
| TDO | The Devious One |
| TDR | Tasks, Duties, and Responsibilities |
| TDSP | Tax Deferred Savings Plan |
| TE | Top Executive |
| TE | Traffic Engineering |
| TE | Tutor Evaluator |