GT6 may refer to:
Gran Turismo 6, a 2013 sim racing video game Triumph GT6, a sports coupé built by Standard-Triumph from 1966 to 1973 in England Lohner GT6, a tram made by Lohner-Werke in Austria , a tram made by Duewag in Germany Realme GT6, one of models of the Realme GT Series, an Android smartphone made by Realme in China Denel GT-6, a South African Modular 120-140mm cannon
See also GT6N, a tram series made by Adtranz in Germany GT64, a 1998 racing video game made by Imagineer in Japan GT 6xx, several models of the GeForce 600 series, a graphics processing unit made by Nvidia