T42

T42 may refer to:

Vehicles Beechcraft T-42 Cochise, an American trainer aircraft T42 medium tank, a 1950s American tank design T-42 super-heavy tank, a Soviet tank project from the inter-war period SJ T42, a Swedish diesel-electric locomotive Slingsby T.42 Eagle, a British glider Cooper T42, a British Formula Three racing car: see Cooper Mark X Mecklenburg T 42, a former class name for a Class 99 steam locomotive

Other uses T42 (classification), a disability sport classification for above knee amputees IBM ThinkPad T42, a laptop model Ruth Airport, in Trinity County, California, United States