| Tendring Technology College | Academic & Science |
| Teacher's Training Course | Academic & Science |
| Time To Close Financing and Have The Check Clear | Accounts and Finance |
| Taltal | Airport Code |
| Talia Trust for Children | Associations & Organizations |
| Toronto Transit Corporation | Business |
| The Ttc Corporation | Business |
| The Toro Company | Business |
| Treasurer and Tax Collector | Business |
| The Travel Corporation | Business |
| Tarheel Trading Company | Business |
| Treasurer Tax Collector | Business |
| Technology Training Center | Business |
| Toro Company | Business |
| Technical Tree Climbing | Business |
| Time To Customer | Business |
| Triphenyl Tetrazolium Chloride | Chemistry |
| Teacher Training Course | Community |
| Toronto Technical Conference | Community |
| Teacher Training Center | Community |
| Those That Care | Community |
| Torah Teen Center | Community |
| Telecommunication Technology Committee (Japan) | Computer and Networking |
| TIA Technical Committee | Computer and Networking |
| Technology Transition Corporation | Computing |
| Technology Transfer Centers | Computing |
| True Type Collection Font | Computing |
| Telecommunications Technical Council | Computing |
| Tape to Tape Converter | Computing |
| Text To Character | Computing |
| Timing Trigger and Control | Computing |
| Telecommunication Technology Committee | Computing |
| Two Tier Caching | Computing |
| Two Tier Commissions | Computing |
| Terminating Toll Center | Computing |
| Trident Technical College | Educational Institute |
| Teacher Training College | Educational Institute |
| Teachers Training College | Educational Institute |
| Terminal Trunk Circuit | Electronics |
| The TTC Conglomerate | General |
| Toast of Tysons Corner Toastmasters Club | General |
| Torontonians Tough And Cool | General |
| Team Thit Cho | General |
| Transformational Team Communication | General |
| Tall Top Cap | General |
| Toyota Technocraft Company | General |
| The Total Transfer Capability | General |
| Torque Transfer Control | General |
| Toronto Transit Comission | General |
| Toyota Technical Center | General |
| Time To Conceive | General |
| Time To Collision | General |
| Top Truck Challenge | General |
| Twin Turbo Charged | General |
| Transit That Cares | General |
| Time Trial Challenge | General |
| Transport Time Control | General |
| Teen Talk Central | General |
| Truck and Trailer Components | General |
| Technical Training Center | General |
| Team Truck Components | General |
| Toyota Truck Club | General |
| Toronto Triumph Club | General |
| Tyee Triumph Club | General |
| Total Transport Cost | General |
| Transportation Technology Center | General |
| Tom Tom Classic | General |
| Tough Truck Challenge | General |
| Tuff Truck Challenge | General |
| Teach Thailand Corps | General |
| Tournament Time Control | General |
| Toronto Taste Control | General |
| Talent Trust Consultants | General |
| Two Task Common | General |
| Tamriel Trade Centre | General |
| Terminology Translation and Comparable | General |
| Telefon Til Chefen | General |
| Trying To Concieve | General |
| Try Train Compete | General |
| Toyota Total Clean | General |
| Temporary Traffic Control | General |
| Take That Customer | General |
| Technical Training for Clerks | General |
| Transformation Tool Contest | General |
| Trust Transparency and Control | General |
| Tal Task Count | General |
| Thresholds of Toxicological Concern | General |
| Transparent Traffic Control | General |
| Trials Training Center | General |
| Timed and Targeted Counseling | General |
| Trust Transparency Center | General |
| Triphenyl Tetrazolium Choride | General |
| Toronto Transit Commition | General |
| Telemetry Telecommand and Communication | General |
| Travel Time Costs | General |
| Toyota Technology Challenge | General |
| Triton Tuners Club | General |
| Thunderbird Turbo Coupe | General |
| Toyota Tsusho Corporation | General |
| Toyota Team Cebu | General |
| Table Tin Cut | General |
| Toyo Tire Corporation | General |
| Tido Tekilla Cuizinier | General |
| Time To Curb | General |
| The Timberliners Clan | General |
| Tick Tock Clock | General |
| Treasure Trove Cove | General |
| Time To Chill | General |
| Toronto Transit Commision | General |
| The Third Creation | General |
| Trend Trigger Confirmation | General |
| The Transportation And Ticket Cent | Governmental |
| Toronto Transportation Commision | Governmental |
| Ticket Transportation Center | Governmental |
| Toronto Transportation Commission | Governmental |
| Trans-Texas Corridor | Governmental |
| Transformational Travel Council | Governmental |
| Transportation Ticket Center | Governmental |
| Turn Two Chassis | Governmental |
| Technology Transfer Center | Governmental |
| Ticket And Transportation Center | Governmental |
| Transportation and Ticket Center | Governmental |
| Toronto Transit Commission | Governmental |
| Toutes Taxes Comprises | International |
| Transplant Therapeutics Consortium | Medical |
| Trying To Conceive | Medical |
| Threshold of Toxicological Concern | Medical |
| Traditional Therapy Clinics | Medical |
| Text The Cellphone | Messaging |
| Text The Cell | Messaging |
| Take The Car | Messaging |
| Tropical Test Center | Military and Defence |
| Torpedo Tube Carrier | Military and Defence |
| Torpedo Tube Chassis | Military and Defence |
| Total Transfer Capacity | Networking |
| Telemetry, Tracking, and Command | Space Science |
| Time To Circularize (orbit) | Space Science |
| Tunnel Thermal Control | Space Science |
| Trenchless Technology Center | Technology |
| Teaching and Technology Collaborative | Technology |
| Telemetry Telecommand and Control | Telecommunication |
