- T – Tracer
- TACBE – Tacbe
- TACMS – Army Tactical Missile System (US)
- TACOM – Tank-automotive and Armaments Command (US)
- TAD – Temporary Additional Duty (Naval Services term)Temporary Duty
- TADDS – Target Alert Display Data Set (US)
- TADS – Target Acquisition and Designation System (US)
- TAM – Tanque Argentino Mediano
- TAS – Target Acquisition Subsystem
- TAS – tracking adjunct system
- TAS – Turret Attitude Sensor
- TBAT – TOW/Bushmaster Armored Turret (US)
- TC – Tank Commander, also Truck Commander (US Army)
- TCO – Tactical Combat Operations
- TCTO – Time-Compliance Technical Order
- TCU – tactical control unit
- TD – Tank Destroyer
- TDCS – Tank Driver Command System
- TDD – Target Detection Device
- TDR – Target Data Receiver
- TDY – Temporary Duty
- TE – Tangent Elevation
- TEL – Transporter-Erector-Launcher
- TELAR – Transporter-Erector-Launcher And Radar
- TES – Tactical Environment Simulation
- TES – target engagement system
- TGMTS – Tank Gunnery Missile Tracking System
- TGP – Terminally Guided Projectile
- TGP – Targeting pod
- TGS – Tank Gun Sight
- TGSM – terminally guided submunition
- TGTS – tank gunnery training simulator
- TI – thermal imaging/imager
- TIC – Troops In Contact
- TICM – thermal imaging common modules
- TIIPS – Thermal Imaging and Integrated Position System
- TIM – Thermal Imaging Module
- TIPU – Thermal Image Processing Units
- TIRE – Tank Infra-Red Elbow
- TIS – thermal imaging system
- TLC – Transport Launching Container
- TLD – Top Level Demonstrations
- TLE – Treaty Limited Equipment
- TLP – Troop Leading Procedures (US)
- TLR – Tank Laser Rangefinder
- TLS – Tank Laser Sight
- TM&LS – Textron Marine & Land Systems
- TMBC – Turret Management Ballistic Computer
- TMP – Tactical Machine Pistol
- TMS – Turret Modernisation System
- TMUAS – Turreted Mortar Under Armor System (US)
- TNT – Trinitrotoluene
- TO – Technical Order
- TOE – table of organisation and equipment
- TOGS – Thermal Observation and Gunnery System (UK)
- TOP – Total Obscuring Power
- TOPAS – Transporter Obrneny Pasovy
- TOTE – Tracker, Optical Thermally Enhanced
- TOW – Tube-launched, Optically tracked, Wire command link guided (US)
- TP – Target Practice
- TP-FL – target practice flash
- TP-S – or TPS Target Practice-Spotting/Signature
- TP-SM – target practice - smoke
- TP-SP – target practice - spotting
- TP-T – target practice - tracer
- TPCM – Target Practice Colour-Marking
- TPDS – Target Practice Discarding Sabot
- TPFSDS-T – target practice fin-stabilised discarding sabot - tracer
- TPTF – Target Practice Time Fuzed
- TR – Triple Rail
- TRACER – Tactical Reconnaissance Armoured Combat Equipment Requirement (UK)
- TRACKSTAR – Tracked Search and Target Acquisition Radar System (US)
- TRADOC – Training and Doctrine Command (US)
- TSFCS – Tank Simplified Fire-Control System
- TSQ – time and super-quick
- TSR – Tavor Sporting Rifle
- TT – transport de troupes (troop transporter)
- TTB – Tank TestBed (US)
- TTD – Transformation Technology Demonstrator
- TTG – Time To Go
- TTS – Tank Thermal Sight
- TU – Terminal Unit
- TU – Traversing Unit
- TUA – TOW Under Armor (US)
- TUR – Tiefflieger-Ьberwachungs-Radar (low-level surveillance radar)
- TV – Television
- TWD – Thermal Warning Device
- TWMP – Track Width Mine Plough
- TWS – Thermal Weapon Sight
- TYDP – Ten Year Defence Programme (Australia)
Read more about this topic: Glossary Of Military Abbreviations