| Abbreviation | Definition |
|---|---|
| THC | Toe Hopping Country |
| THFC | Tottenham Hotspur Football Club |
| THIF | The Home of Indian Football |
| THR | Training Heart Rate |
| THUD | Tony Hawk Underground Dweller |
| THW | Total Hardcore Wrestling |
| THWN | Tennessee Healthy Weight Network |
| THZ | The Hounds of Zeus |
| TI | Tournament Index |
| TI | Tournaments Illuminated |
| TIA | Tennis Industry Association |
| TIB | The Icy Boards |
| TIC | Teams In Competition |
| TIF | Throw It Far |
| TIFI | Texas Intercity Football Inc. |
| TIM | Trofeo Italiano Motocicliste |
| TINSTAAPP | There Is No Such Thing As A Pitching Prospect |
| TIP | Track Impact Program |
| TIPS | Technique, Insight, Personality, and Speed |
| TIPS | Technique, Insight, Psyche, and Speed |