GTI

GTI may refer to:

Automotive

 * Grand Tourer Injection, a car model variant
 * Maserati 3500 GTI, the first GTI car ever, from 1961
 * Volkswagen Golf GTI, the first GTI hot hatch
 * Peugeot 205 GTI, a famous hot hatch
 * Suzuki Swift GTi, Suzuki GTi variant
 * GTi Engineering, an auto racing team

Other uses

 * Atlas Air, ICAO code GTI
 * Galway Technical Institute, a third level educational facility in Galway, Ireland
 * Gas Technology Institute, an American non-profit research and development organization
 * Gerakan Tani Indonesia, a peasants organization in Indonesia
 * Global Terrorism Index, a report published annually by the Institute for Economics and Peace (IEP)
 * Global Tiger Initiative, a conservation effort funded in part by the World Bank
 * GrafTech, a graphite manufacturing company, NYSE symbol GTI
 * Grid-tie inverter, an apparatus to convert DC electrical (solar, wind) energy to AC and deliver it back to the grid
 * GT Interactive, a video game publisher and distributor
 * GTI Club, a racing game originally released for the arcades in 1996 by Konami
 * GTI Mortsel, a vocational secondary school in Mortsel, Belgium
 * Guilford Transportation Industries, a transportation company
 * Gires–Tournois interferometer, a component for Femtosecond lasers.
 * Pokémon Mystery Dungeon: Gates to Infinity, a 2012 game in the Pokémon Mystery Dungeon series
 * Grațianite, IMA symbol Gți