T
- TACP – Tactical Air Control Party (USAF)
- TAD – Temporary Additional Duty (U.S. Military)
- TBD – To Be Determined
- TDY – Temporary Duty (U.S. Military)
- TFOA – Things Falling Off Aircraft
- TG6 – Task Group 6 (group designation for NZ SAS – NZ Army)
- TIC – Troops In Contact
- TSgt – Technical Sergeant (USAF E-6)
- TU – Tits Up (Dead, Inoperable), a.k.a. "tango uniform"
- TARFU – Things Are Really Fucked Up, or Totally And Royally Fucked Up
Read more about this topic: List Of U.S. Government And Military Acronyms