T6 or T-6 may refer to:
Aircraft Bikle T-6, a glider North American T-6 Texan, a World War II-era single-engine advanced trainer aircraft Beechcraft T-6 Texan II, a 2000's era single-engine turboprop trainer aircraft built by the Raytheon Aircraft Company
Automobiles Ford Ranger (T6), post-2011 models JAC Shuailing T6, a Chinese mid-size pickup truck Volvo T6, a 2005 concept car from Volvo Volvo T6 engine, a turbocharged gasoline inline six used in the S60, V60, V70, XC70, S80 and XC90 Volkswagen Transporter (T6), Sixth generation of the Volkswagen Transporter, and the latest iteration released in 2016
Biology and medicine Enterobacteria phage T6, a bacteriophage T6, an EEG electrode site according to the 10–20 system Sixth thoracic vertebra Thoracic spinal nerve 6
Pop culture Tekken 6, a 2007 fighting game Terminator: Dark Fate, the sixth film in the Terminator film franchise
Rail transport ALCO T-6, an American diesel switching (shunting) locomotive T6, a model of the OS T1000 train of the Oslo Metro LSWR T6 class, a British steam locomotive T6 Lidcombe & Bankstown Line, a Sydney Trains service, Australia T6 Carlingford Line, a former Sydney Trains service, Australia Île-de-France tramway Line 6, France T6 (Istanbul Tram), a light rail line in Istanbul, Turkey Beenleigh line (numbered T6), a Queensland Rail service, Australia Ferny Grove line (numbered T6), a Queensland Rail service, Australia
Roads T6 road (Tanzania) T6 road (Zambia)
Other uses Tavrey Airlines, by IATA airline designator T6, a size of Torx screwdriver T6 space, in topology, a perfectly normal Hausdorff space A temper designation for aluminium alloys, indicating 'solution heat treated and artificially aged' A tornado intensity rating on the TORRO scale A prototype of the U.S. M4 Sherman tank A military designation for Östgöta Logistic Corps
See also 6T (disambiguation) ʨ, a similar-looking symbol used in the IPA alphabet