List of acronyms: T

• T – Tera – tesla – tritium

  TA

• ta – Tamil language
• Ta – Tantalum
• TA
• * Target Acquisition
• * Teaching Assistant
• * teraampere
• * Territorial Army
• * Tristan da Cunha
• TAA
• * Transparency Anti-Aliasing
• * Trans Australia Airlines
• TAAC – Trans America Athletic Conference, the original name for the US college sports league now known as the ASUN Conference
• TAACOM – U.S. Theater Army Area Command
• TAADCOORD – Theatre Army Air Defence Co-ordinator
• TAAR – Trace Amine-Associated Receptor
• TAC – U.S. Tactical Air Command
• TACAMO – Take Charge and Move Out
• TACAN – Tactical Air Navigation
• TACC
• * Tactical Air Control Centre
• * Tanker Airlift Control Center
• TACCO – Tactical Coordinator
• TACCSF – U.S. Theater Aerospace Command & Control Simulation Facility
• TACDAR – Tactical Detection And Reporting
• TACP – Tactical Air Control Party – Technology Applications Certification Program
• TACSOP – Tactical SOP
• TADIL – Tactical Digital Information Link
• TADL – Tactical Air Data Link
• TADSS – Training Aids, Devices, Simulators, and Simulations
• TAF - Trading Activity Fee assessed by FINRA to recover the costs of supervising and regulating firms.
• tah – Tahitian language
• TAI – Target Area of Interest
• TAJ – Tom and Jerry
• TAJT – Tom and Jerry Tales
• TALES – Technical Advice and Lexicon for Enabling Simulation
• tam – Tamil language
• TAN – Tanzania
• TANJ – There Ain't No Justice
• TANP – Terrain-Aware Network Planner
• TANSTAAFL – There Ain't No Such Thing As A Free Lunch
• TAPPS – Texas Association of Private and Parochial Schools
• TARDIS – Time And Relative Dimension In Space
• TARP – Transparency Accountability Rights for Parents
• TAROT – Télescope à action rapide pour les objets transitoires
• TAS – Tasmania
• TASER – Thomas A. Swift's Electric Rifle
• TASM – Tactical Air-to-Surface Missile
• tat – Tatar language
• TAT – Tourism Authority of Thailand
• TATP – TriAcetone TriPeroxide
• TADC - ''The Amazing Digital Circus''

  TB

• Tb – Terbium
• TB – Tuberculosis
• TBA – to be announced
• TBBPA – TetraBromoBisPhenol-A
• TBC – to be confirmed, to be continued
• TBD – "to be documented", "to be determined", or "to be decided"
• TBD – Torpedo Boat Destroyer
• TBF – to be fair
• TBGRI – Tropical Botanic Garden and Research Institute, India
• TBH – to be honest
• TBL – Turkish Basketball League
• TBM – tactical ballistic missile, theatre ballistic missile
• TBS – Turner Broadcasting System
• TBT – Tributyltin

  TC

• TCC – Tarrant County College
• Tc – Technetium
• TC – Teracoulomb – Turks and Caicos – United Arab Emirates
• TCA – Transformational Communications Architecture – Turks and Caicos
• TCAS – Traffic Collision Avoidance System
• TCAA – Top Counter-Assault Agents
• TCBY - The Country's Best Yogurt
• TCCCS – Tactical [Command, Control, and Communications System]
• TCD – Chad
• TCG – Trusted Computing Group – Türkiye Cumhuriyeti Gemisi
• TCHD – Truck Cargo Heavy Duty
• TCL – Tool Command Language
• TCM – Turner Classic Movies
• TCP – Traffic Control Point – Transmission Control Protocol – Trichlorophenol
• TCU – Texas Christian University
• TCWMS – Tele-Center Workforce Management System
• TCW – Tasty Coma Wife

  TE

• te – Telugu language
• Te – Tellurium
• TE – Tactical Exploitation – Testosterone to Epitestosterone ratio – Tight end
• TEAL – Tasman Empire Airways Limited
• Team – Together everyone achieves more
• TEAMS – The East African Marine System
• TED – Technology Entertainment Design prize
• TEEL – parts of a body paragraph in an essay: * T - Topic sentence E - Explanation E - Evidence L - Link
• TEETH – Tried Everything Else, Try Homeopathy
• tel – Telugu language
• TEL – Transporter, Erector and Launcher
• TELAR – Transporter, Erector, Launcher And Radar
• TEMO – Training, Exercise, and Military Operations
• TENCAP – Tactical Exploitation of National Capabilities
• TER's – Transphase Emission Rods
• TERS – Tactical Event Reporting System
• TES – Tactical Event System
• TEST – Thesaurus of Engineering and Scientific Terms
• TEU – Twenty-foot equivalent unit
• TeVeS – Tensor Vector Scalar theory

  TF

• TF –
• * French Southern Territories
• * Task Force
• * Terafarad
• * Too Far
• * Team fortress
• * Transformers
• T/F – True/False
• TFG
• * Task Force Games
• * Tiny Friendly Giant
• * Transferoviar Grup
• TFMPP – Trifluorophenylmethylpiperazine
• TFR – Total Fertility Rate
• TFT – Thin-Film Transistor
• TFTP –
• * Trivial File Transfer Protocol
• * Terrorist Finance Tracking Program

  TG

• tg – Tajik language
• Tg – Teragram
• TG – Togo
• TGA – Tonga
• TGB – Tres grande bibliothèque, a sarcastic nickname for the Bibliothèque nationale de France
• TGIF – Thank God It's Friday, Toes Go In First
• tgk – Tajik language
• tgl – Tagalog language
• TGO – Togo
• TGT
• * Target
• * Ticket Granting Ticket
• * Tyrese, Ginuwine, Tank – see TGT for their collaboration
• TGV
• * Tanjong Golden Village
• * Tanora malaGasy Vonona
• * Test Generation with Verification
• * ''Train à grande vitesse''

  TH

• th – Thai language
• Th – Thorium
• TH – Terahenry – Thailand
• tha – Thai language
• THA – Thailand
• THAAD – Terminal High Altitude Area Defence
• THB – Thai baht
• THEGENTRY – The High-End Group of Earth's New Technologies Research Yield
• THEL – Tactical High Energy Laser ACTD
• THG – Tetrahydrogestrinone
• ThG – Graduate of Theology
• THSU - Texas Health and Science University

  TI

• ti – Tigrinya language
• Ti – Tebi – Titanium
• TI – Tajikistan – Thermal Imaging – Threat Identification – Training Instructor – Texas Instruments
• TIA – Total Information Awareness initiative
• TIA – Transient Ischemic Attack
• TIALD – Thermal Imaging and Airborne Laser Designation
• TIAA-CREF – Teachers Insurance and Annuity Association – College Retirement Equities Fund
• TIBS – Tactical Information Broadcast System
• TIC – Troops In Contact
• TID – Target Identification – ter in die
• TIGERS – Topologically Integrated Geographic Encoding and Referencing System
• TIM – Technical Information Memorandum – Technical Interchange Meeting – Toxic Industrial Material – Telecom Italia Mobile
• TIMS – Tactical Internet Management System – The Institute of Management Sciences – – Thermal Infrared Multispectral Scanner – Thermal Ionization Mass Spectrometry – Travel Information Management Services – Tuberculosis Information Management System
• TINC – There Is No Cabal
• TINY – That Is, Not You
• TIP – Thermal Identification Panel
• tir – Tigrinya language
• tits – Toes in the Sand

  TJ

• TJ – Tajikistan – Terajoule
• TJD – Truncated Julian Day
• TJK – Tajikistan
• TJS – Tajik somoni

  TK

• tk – Turkmen language
• TK – Terakelvin – Tokelau
• TKBL – Türkiye 1. Kadınlar Basketbol Ligi, the Turkish-language name of the Turkish Women's Basketball League
• TKL – Tokelau
• TKM – Turkmenistan

  TL

• tl – Tagalog language
• Tl – Thallium
• TLPM – T1 Line Performance Monitor
• TL
• * Team Leader
• * Teralitre
• * Timor-Leste
• * ThermoLuminescence
• TL;DR – Too long; didn't read
• TLATOJL – The Life and Times of Juniper Lee
• TLA
• * Three-Letter Abbreviation/Acronym
• * 'Three-Letter Agency'
• * Temporal light artefacts
• TLAC
• * Total Loss Absorbency Capacity
• * The Light Aircraft Company
• TLAM – Tomahawk Land Attack Missile
• TLAR
• * That Looks About Right
• * Transporter-Launcher And Radar
• TLC
• * Tender Loving Care
• * The Learning Channel
• * Thin-layer chromatography
• * T-Boz, Lefteye, Chilli
• * Tables, Ladders, and Chairs
• TLD
• * Thermoluminescent Dosimeter
• * Top-Level Domain
• TLE
• * Temporal light effects
• TLI
• * Temporal light interference
• TLM
• * Traditional Latin Mass
• * Tridentine Latin Mass
• * Transaction Lifecycle Management
• * Temporal light modulation
• TLS
• * Timor-Leste
• * Times Literary Supplement

  TM

• Tm
• * Terameter
• * Thulium
• TM
• * Technical Manual
• * Theater Missile
• * Thematic Mapper
• * trademark
• * Turing machine
• * Turkmenistan Tympanic Membrane
• TMA
• * Terminal Maneuvering Area
• * Texas Medical Association
• * Tristeza y muerte de agave – a disease affecting the blue agave, from which the popular spirit tequila is produced
• TMAP – Texas Medication Algorithm Project
• TMC – The Movie Channel
• TMD – Theater Missile Defense
• TMDK – The Mighty Don't Kneel
• TMI – Too Much Information
• TMJ – TemporoMandibular Joint
• TMM – Turkmen manat
• TMNT – Teenage Mutant Ninja Turtles
• TMO
• * Table Mountain Observatory
• * Television match official
• TMP
• * East Timor
• * Temporary
• TMPG – Transparent Multiplatform Gateway
• TMR – Twin Main Rotors
• TMS – Transcranial Magnetic Stimulation
• TMT – Thirty Meter Telescope
• TMTOWTDI – There's More Than One Way To Do It
• TMZ – Thirty-Mile Zone, an area in and around Los Angeles considered "local" under entertainment industry union work rules

  TN

• tn – Tswana language
• TN
• * Tennessee
• * Teranewton
• * Tonga
• * Tunisia
• TNA – Total Nonstop Action Wrestling, an American professional wrestling promotion
• TND – Tunisian dinar
• TNO – Trans-Neptunian Object
• TNT
• * Thomas Nationwide Transport, an Australian company that was one of the predecessors to the PostNL and the current TNT Express
• * TriNitroToluene
• * Turner Network Television

  TO

• to – Tongan language
• T/O – Theatre of Operations
• TO
• * Togo
• * Tonga
• TOA
• * Table Of Authorities
• * Total Obligation Authority
• TOAD
• * Temporary, Obsolete, Abandoned, or Derelict site
• * Towed Optical Assessment Device
• TOBS – Time of OBServation
• TOC
• * Table Of Contents
• * Tactical Operations Centre
• * Temporo-Occipital transition Cortex
• * Top of Concrete
• To-do – To-do-List
• TOG – Togo
• TOGS – Thermal Observation Gunnery Sight
• TOMS – Total Ozone Mapping Spectrometer
• ton – Tongan language
• TON – Tonga
• TOP – Tongan pa'anga
• TOS
• * Tape Operating System
• * Terms of service
• * The Original Series, used to distinguish the first Star Trek TV series from other parts of the media franchise
• * Tramiel Operating System
• TOT – Time On Target
• TOW – Tube-launched, Optically tracked, Wire-guided

  TP

• TP
• * East Timor
• * São Tomé and Príncipe
• * Training Practice
• * Trident Ploughshares
• TPE – Chinese Taipei
• TPI – The point is
• TPO – Thrombopoietin
• TPS – The Pennington School
• TPTB – The Powers That Be

  TQ

• TQ – Top Qualifier

  TR

• tr – Turkish language
• TR – Turkey
• TRA – Technology Readiness Assessment
• TRAC – TRADOC Analysis Center
• TRACON – Terminal Radar Approach Control
• TRADOC – Training and Doctrine Command
• TRAIN – Tourist Railway Association, Inc.
• TRANSCOM – U.S. Transportation Command
• TRAP – Tactical Receive equipment and related Applications
• TRASANA – TRADOC Systems Analysis Agency
• TRD – Towed Radar Decoy
• TRIGAT – Third Generation Antitank
• TRIPS - Trade-Related Aspects of Intellectual Property Rights
• TRL – Technology readiness level
• Trp – Troop
• TRP
• * Target Reference Point
• * Time of Reporting
• TRPF – Tendency of the rate of profit to fall
• TRU – Transuranic
• TRUEX – Training in Urban Environment Exercise
• TRW – Thompson Ramo Wooldridge Inc.
• TRY – Turkish lira

  TS

• ts – Tsonga language
• Ts – Terasecond
• TS
• * Terasiemens
• * Thunderstorm
• * Tunisia
• * TinySex
• * Transsexual
• * "Tough Sh*t"
• TSA
• * Theatre Storage Area
• * Time Slot Allocation
• * Transportation Security Administration
• * The Salvation Army
• TSCA – Toxic Substances Control Act
• TSEC – Transmission Security Encryption Code
• TSL – Transportation Security Laboratory
• tsn – Tswana language
• TSN
• * The Sporting News
• * The Sports Network
• tso – Tsonga language
• TSO
• * The Stationery Office
• * TRICARE Support Office
• * Trans-Siberian Orchestra
• TSOP
• * Tactical Standing Operation Procedure
• * The Sound of Philadelphia
• TSR – many, including terminate-and-stay-resident
• TSSIA – the subject says it all

  TT

• tt – Tatar language
• TT
• * Teratesla
• * Terrestrial Time
• * Tourist Trophy
• * Trinidad and Tobago
• TTBAO - Things To Be Aware Of
• TTCT – Torrance Tests of Creative Thinking
• TTD – Trinidad and Tobago dollar
• TTO – Trinidad and Tobago
• TTFN – Ta Ta For Now
• TTL
• * Tax, Title, License
• * Through-the-lens
• * Time 'till live
• * Time to live
• * Transistor–transistor logic
• TTP
• * Tactics, Techniques, and Procedures
• * Thrombotic thrombocytopenic purpura
• * Trailer Transfer Point
• TTTEAF – Tank Engine and Friends">Tank (American singer)">Tank Engine and Friends
• TTY – TeleTYpewriter
• TTYL – Talk To You Later
• TTZ – Tetrazolium

  TU

• TU – Technische Universität – Thammasat University – Turkey
• TUC – Trades Union Congress
• TUG – TeX Users Group
• TUI – Text-based user interface, among other uses
• tuk – Turkmen language
• TUN – Tunisia
• TUNS – Technical University of Nova Scotia
• Tur – Turkish language
• TUR – Turkey
• T.U.R.D. Tactical Urban Response Department
• TUSK – Tank Urban Survival Kit
• TUV – Tuvalu

  TV

• TV | – Time value, a designation seen on some camera dials for shutter priority mode
• TV
• * Television
• * Teravolt
• * Transvestite
• * Tuvalu
• TVA – Tennessee Valley Authority
• TVG
• * Television Games
• * Tick, Very Good, Often used by School Teachers when marking homework etc.
• TVR – TreVor Racing
• TVS – Tornado vortex signature

  TW

• TWA - Trans World Airlines
• tw – Twi language
• TW – Republic of China – terawatt
• TWAIN – Technology Without An Interesting Name
• New [Taiwan dollar|TWD] – Taiwan dollar
• TWE – Trans World Entertainment
• twi – Twi language
• TWI – The Welding Institute
• TWN – Republic of China
• TWP – Technical Working Paper
• Twp - township
• TWS – Thermal Weapon Sight – Track While Scan
• TWT - traveling wave tube
• TWX - telex
• TWIP – Take What Insurance Pays – When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference

  TX

• TX – Texas – Transmit – Turkmenistan
• TXV – Thermostatic Expansion Valve

  TY

• ty
• * Tahitian language
• * Thank you
• TYT – wikt:take your time

  TZ

• TZ – Tanzania
• TZA – Tanzania
• TZC – Tetrazolium chloride
• TZS – Tanzanian shilling