T7 or T-7 may refer to: Biology Thoracic vertebra 7 Thoracic spinal nerve 7 T7 phage, a virus used in the study of biological systems T7 DNA Helicase, a hexameric motor protein T7 RNA polymerase, an RNA polymerase that catalyzes the formation of RNA Transport Île-de-France tramway Line 7 Olympic Park line, a service of Sydney Trains Twin Jet's IATA airline code T7 Bristol–Chepstow, a bus route in the United Kingdom Vehicles T-7 (rocket), China's first sounding rocket Boeing T-7 Red Hawk, an American advanced jet trainer aircraft Fuji T-7, a Japanese primary trainer aircraft Yugoslav torpedo boat T7 T7 Armored Car, a prototype vehicle for the US Army T7 Combat Car, a prototype vehicle for the US Army T-7 Navigator or Beechcraft Model 18, a trainer aircraft used by the United States armed forces T7, a model of the OS T1000 train of the Oslo Metro LSWR T7 class, an experimental 4-2-2-0 steam locomotive built in 1897 Other uses 2C-T-7, a hallucinogenic phenethylamine T7, television station in Kosovo Tekken 7, a 2015 fighting game T-Seven or Judith Hildebrandt, a singer and former member of Mr. President A tornado intensity rating on the TORRO scale