| Abbreviation | Definition |
|---|---|
| TTW | Tilting Three Wheeler |
| TTWA | Tennessee Titans Women's Association |
| TTWC | Three Time World Champion |
| TTX | Taken To Xtremes |
| TTYA | Trinidad and Tobago Yachting Association |
| TTYC | Trinidad and Tobago Yacht Club |
| TTYL | Tennessee Titans Young Life |
| TU | Times Up |
| TUBA | The Underground Bowling Alley |
| TUBC | The Ultimate Burnout Challenge |
| TUC | Toronto Ultimate Club |
| TUF | The Ultimate Fighter |
| TUFF | Texas Ultimate Frisbee Friends |
| TUMC | Trinity United Methodist Church |
| TVA | Tidewater Volleyball Association |
| TVCL | Thames Valley Cricket League |
| TVF | Total Violence Football |
| TVL | Tough Victory League |
| TVLC | ToyVault Life Counter |
| TVLL | Tanque Verde Little League |