| Acronym | Definition |
|---|
| TTTF | Time to Treatment Failure (medicine) |
| TTTF | Tokyo Table Tennis Federation (Tokyo, Japan) |
| TTTF | Townsend Toy & Train Fairs (England, UK) |
| TTTF | Todays Teens Tomorrows Future (Yuma, AZ) |
| TTTF | True to the Faith |
| TTTF | Turf Type Tall Fescue (grass variety) |
| TTTF | Teach Them to Fish (Sumrall, MS mission) |
| TTTF | Technology Transformation Task Force |
| TTTF | Trinidad and Tobago Taekwan-Do Federation |
| TTTF | Trials, Training and Test Facility (UK) |
| TTTF | Time and Temperature Task Force |
| TTTF | Toll and Tariff Task Force |
| TTTF | Take to the Floor |
| TTTF | Train the Trainers Thunderstorm Forecasting |
| TTTF | Teaching Tolerance Task Force |
| TTTF | Trans Tasman Tariff and Fuel Consultants |
| TTTF | Too Tired to Function (Internet slang) |
| TTTF | Tanzanian Tertiary Task Force |
| TTTF | Through-Thickness-Through-Focal |
| TTTF | Target Time-To-Failure |
| TTTF | Tourism and Transportation Task Force |
| TTTF | TASC Target Tracking Filter |