| Acronym | Definition |
|---|
| TTC | The Toro Company (stock symbol) |
| TTC | Toutes Taxes Comprises (French) |
| TTC | Two-Task Common (presentation layer type) |
| TTC | Telecommunication Technology Committee (Japan) |
| TTC | Teacher Training Course |
| TTC | Temporary Traffic Control |
| TTC | Technology Training Center |
| TTC | Toronto Transit Camp |
| TTC | Take The Car (Toronto Transit System) |
| TTC | Technology Transfer Center |
| TTC | Teacher Training College |
| TTC | Threshold of Toxicological Concern (exposure risk assessment) |
| TTC | Technical Training Center |
| TTC | The Thomson Corporation |
| TTC | Total Transfer Capability |
| TTC | Time-To-Collision |
| TTC | Tale of Two Cities (Charles Dickens novel) |
| TTC | Tag Team Championship |
| TTC | Technology Training Corporation |
| TTC | Transportation and Ticket Center (Walt Disney World resort) |
| TTC | Timing, Trigger and Control (electonic systems) |
| TTC | Transportation Technology Center, Inc. |
| TTC | Telemetry, Tracking & Control |
| TTC | The Transition Companies LLC (Dallas, TX) |
| TTC | Toontown Central (gaming) |
| TTC | Tra Terra e Cielo (Italian association and newspaper, tourism and natural life) |
| TTC | Tendring Technology College (UK) |
| TTC | Ticket Transportation Center |
| TTC | Teletronics Technology Corporation |
| TTC | Triple Test Cross |
| TTC | Toronto Triumph Club (Canadian automobile club) |
| TTC | The Terminal Clan |
| TTC | Tailored Transportation Contract |
| TTC | Tuscaloosa Track Club (Alabama) |
| TTC | Tonal Transfer Curve |
| TTC | Telephone Terminal Cabinet |
| TTC | Teaching Training Centre (UK) |
| TTC | Telemetry Traffic Control |
| TTC | Time-To-Collection (insurance) |
| TTC | Two-Trap Channel |
| TTC | Tactical Telephone Center |
| TTC | Telekom Training Centre (Malaysia) |
| TTC | Total Target Cash |
| TTC | Trident Technical Corporation (Georgia) |
| TTC | The Tanooki Clan (online gaming clan) |
| TTC | Turbine Throttle Control |
| TTC | Text the Cell |
| TTC | THAAD Test Controller |
| TTC | Track-to-Track Correlator |
| TTC | Transformer-rectifier Transfer Contactor |
| TTC | The Technology Coach (Mississauga, ON, Canada) |
| TTC | The Transit Coalition |
| TTC | Transmission Technologies Corporation |
| TTC | Top Truck Challenge (competition) |
| TTC | The Teaching Company |
| TTC | Tripheny Tetrazolium Chloride |
| TTC | Trenchless Technology Center (Louisiana Tech University) |
| TTC | Time Travel Capsule |
| TTC | Time to Complete |
| TTC | Tick Tock Clock (Super Mario 64 game level) |
| TTC | Turn the Corner (various organizations) |
| TTC | To the Contrary (TV show) |
| TTC | The Triplet Connection |
| TTC | Toronto Transit Commission |
| TTC | Time to Customer |
| TTC | Tropical Test Center |
| TTC | Trying To Conceive |
| TTC | Treasurer-Tax Collector (various locations) |
| TTC | Trans Texas Corridor |
| TTC | Time to Continue |
| TTC | The Training Center |
| TTC | Toyota Technical Center |
| TTC | Thermal Transfer Corporation |
| TTC | Transition to College (various locations) |
| TTC | Tuition Tax Credit (various locations) |
| TTC | Trident Technical College (North Charleston, SC) |
| TTC | Toronto Taxpayers Coaltion (Canada) |