| Acronym | Definition |
|---|
| TT➣Trinidad & Tobago (top-level domain) |
| TT➣Tourist Trophy (Isle of Man) |
| TT➣Title (assembly language ASM51 assembler control) |
| TT➣Twin Turbo |
| TT➣Tabletop |
| TT➣The Truth |
| TT➣Table Tennis |
| TT➣Travel Trailer |
| TT➣Tom Tom (drums) |
| TT➣The Thing (John Carpenter movie) |
| TT➣Table Top (model railroad scale, 2.5mm = 1 ft. in USA, or 3mm = 1 ft. UK) |
| TT➣Tea Time |
| TT➣Talk To |
| TT➣Take That (band) |
| TT➣Top Ten |
| TT➣Transport Tycoon (game) |
| TT➣Transit Time (logistics) |
| TT➣Total Time (aviation) |
| TT➣Thermaltake (PC cooling industry) |
| TT➣Telegraphic Transfer (funds) |
| TT➣Texas Tech (University) |
| TT➣Try This |
| TT➣Travel Time |
| TT➣Teen Titans (cartoon) |
| TT➣Ta Ta |
| TT➣Test Tube |
| TT➣Test Track (Disney attraction) |
| TT➣The Titans (game) |
| TT➣TeleTubbies |
| TT➣Turntable |
| TT➣Toyota Tercel |
| TT➣TrueType (Microsoft font) |
| TT➣Tina Turner (singer) |
| TT➣Technology Transfer |
| TT➣To Taste (recipes) |
| TT➣Toon Town (cartoons) |
| TT➣Tim Tebow (football) |
| TT➣Tag Team |
| TT➣Turbo Tax (software) |
| TT➣Thoroughbred Times (newsletter) |
| TT➣Tank Top (shipbuilding) |
| TT➣Tow Truck |
| TT➣Turk Telekom (Turkey) |
| TT➣Trustee (IRB) |
| TT➣Transthoracic |
| TT➣TeleText |
| TT➣Tool Time |
| TT➣The Trenches (gaming, Half-Life modification) |
| TT➣Treatment Technique |
| TT➣Trouble Ticket |
| TT➣Tenure Track (academics) |
| TT➣Thirsty Thursday |
| TT➣The Two Towers (second Lord of the Rings movie) |
| TT➣Trailer Trash |
| TT➣Two Towers (second Lord of the Rings movie) |
| TT➣Title Tag (HTML) |
| TT➣Toontown |
| TT➣Telegraphic Transfer |
| TT➣Torah Tidbits (weekly publication) |
| TT➣Triple Threat (Prince tennis racket) |
| TT➣Tetanus Toxoid |
| TT➣Tractor Trailer |
| TT➣Triple Threat (WWE match) |
| TT➣Taco Time (various locations) |
| TT➣Tiny Tim (entertainer) |
| TT➣Telephone Terminal |
| TT➣Transition Town (sustainability project community; various locations) |
| TT➣Typewriter Text |
| TT➣Travel & Tourism |
| TT➣Troubled Teen |
| TT➣Tokai Tokyo (financial group; Japan) |
| TT➣Tidningarnas Telegrambyrå (Swedish National News Agency) |
| TT➣Trending Topic (Twitter) |
| TT➣Three Towns (beer) |
| TT➣Temperature Transducer |
| TT➣Tiny Toons (TV Show) |
| TT➣Text-Telephone (TTY is preferred) |
| TT➣Tribe Twelve |
| TT➣Total Tackles (football stat) |
| TT➣Transcription and Translation |
| TT➣Thrombin Time |
| TT➣timed text |
| TT➣Triple Tube |
| TT➣Twitter Trend |
| TT➣Team Talk (web forum) |
| TT➣Turing Test (Artificial Intelligence) |
| TT➣Totus Tuus (Latin: All Yours; chiefly religious) |
| TT➣Teletypewriter |
| TT➣Test Temperature |
| TT➣Tampa Tribune (Tampa, FL newspaper) |
| TT➣Twelve Tribes (Twelve Tribes of Israel) |
| TT➣Target Text |
| TT➣Temple Terrace (Florida city) |
| TT➣Talking Time (call center) |
| TT➣Technical Translation |
| TT➣Temperature Transmitter |
| TT➣Timmy Turner (cartoon character) |
| TT➣Terrestrial Time |
| TT➣Transaction Time (call center) |
| TT➣Target Tracking |
| TT➣Triple Time |
| TT➣Tyne-Tees |
| TT➣Torpedo Tube(s) |
| TT➣Temperament Tested |
| TT➣Total Temperature |
| TT➣TheaterTek (media player) |
| TT➣Technology Transition |
| TT➣Task Type |
| TT➣Thrust Termination |
| TT➣Turn Time |
| TT➣Transition Technologies |
| TT➣Tails-Tails (possible outcome for flipping a coin twice) |
| TT➣Terminal Transfer |
| TT➣Treatment Team |
| TT➣Temporary Total Disability (Ohio Bureau of Workers' Compensation) |
| TT➣Technological Turbulence |
| TT➣Tri-Tone (music) |
| TT➣Traveling Time |
| TT➣Timo Tolkki (band) |
| TT➣Triple Triad (card game) |
| TT➣Tube Trailer |
| TT➣Telephone Technician |
| TT➣Tatarian (language identifier; RFC 3066) |
| TT➣Tank Table |
| TT➣Through Tubing |
| TT➣Trunk Type |
| TT➣Time Trial(s) (racing/sporting events) |
| TT➣Treasure Trooper |
| TT➣Trenton Thunder (minor leauge baseball) |
| TT➣Thornton Tomasetti (structural engineering company) |
| TT➣Theutates Thunder (gaming) |
| TT➣Townsend Thoresen (UK ferry company) |
| TT➣Twin Tub |
| TT➣Thurn and Taxis (prominent German family) |
| TT➣Transtejo (Lisbon ferry company) |
| TT➣Tokyo Toshokan |
| TT➣Titan Tower (TV show) |
| TT➣Thigh Toner (strength-building exercise) |
| TT➣Tube Turns |
| TT➣Translation Types |
| TT➣Tuberculin Tested (cattle) |
| TT➣Torrential Tribute (Yugioh cards) |
| TT➣Tactical Terminals |
| TT➣Trenton Titans (minor league hockey) |
| TT➣TriTube (French) |
| TT➣Tyson Tomko (WWE wrestler) |
| TT➣Thirty-Two Thirty-Two (Atari computers) |
| TT➣TroyTech (Troy High School; Fullerton, CA) |
| TT➣Transmit Tip |
| TT➣Tula Tokareva (Russian pistol) |
| TT➣Trinidadian Dollar |
| TT➣Transfer Tree |
| TT➣TransiTALK (website) |
| TT➣Tundra Times (newspaper) |
| TT➣Topical Time (publication, American Topical Association) |
| TT➣Troop Test |
| TT➣Tracking Technician |
| TT➣Teatro Technicus |
| TT➣Tandem Turn |
| TT➣Todo-O-Terreno (4x4) (Portuguese: All terrain) |
| TT➣Teetotal/Teetotaller |
| TT➣Tactical Tables |
| TT➣DCS/Technical Training (USAF) |
| TT➣Trailing Tire |
| TT➣Technical Test/ing |
| TT➣Trusted Territories |
| TT➣Taxi Tran |
TT - (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions
TT - a republic in the western central Pacific Ocean in association with the United States
TT - a country scattered over Micronesia with a constitutional government in free association with the United States; achieved independence in 1986