GT, Gt or G-T may refer to:
GTK+ (formerly GIMP Toolkit) is a cross-platform widget toolkit for creating graphical user interfaces.
The GTRE GTX-35VS Kaveri (Sanskrit: कावेरी) is an afterburning turbofan project developed by the Gas Turbine Research Establishment (GTRE), a lab under the DRDO in Bangalore, India.
The GT200 is a fraudulent "remote substance detector" that was claimed by its manufacturer, UK-based Global Technical Ltd, to be able to detect, from a distance, various substances including explosives and drugs.
GTE Corporation, formerly General Telephone & Electric Corporation (1955–1982), was the largest independent telephone company in the United States during the days of the Bell System.
GTPases (singular GTPase) are a large family of hydrolase enzymes that can bind and hydrolyze guanosine triphosphate (GTP).
GTA (acronym of "Good Times Ahead") are an electronic music duo from Miami consisting of house, electro house, trap music and hip hop producers Julio Mejia (born December 8, 1990) and Matt Toth (born August 22, 1990).
GTA gang (Russian: банда ГТА; Banda GTAh) — nickname for an organized criminal group of 8-13 men, 2-3 women, which killed about 14-17 people (plus two injured) using firearms.
GTS Finnjet was a cruiseferry, built in 1977 by Wärtsilä Helsinki Shipyard, Finland for Finnlines traffic between Finland and Germany.
GTT Communications, Inc. (GTT), formerly Global Telecom and Technology, is a multinational telecommunications and internet provider company with headquarters in McLean, Virginia.