| Abbreviation | Definition |
|---|---|
| TW | This Work |
| TWA | Theory of Work Adjustment |
| TWG | Technical Working Group |
| TWI | Training Within Industry |
| TWIA | Texas Windstorm Insurance Association |
| TWN | Triumph Werke Nurnberg |
| TWOC | The Woodlands Operating Company |
| TWP | Technical White Paper |
| TWQ | TeamWork Questionnaire |
| TWT | TimeLine -- What's That? |
| TWX | TeletypeWriter eXchange service |
| TXE | Testing, Experimentation, and Evaluation |
| TXS | Technology Exhibition & Symposium |
| TxU | Toeleveren x Uitbesteden (Supply x Outsourcing) |
| TYD | To Your Door |
| TYM | Take Your Money |
| TZE | Total Zone Exclusion |
| U | Unlimited |
| U&C | usual and customary |
| u/a | under agreement |