GTC may stand for:

Educational institutions

* Gateway Technical College
* Green Templeton College, Oxford, a constituent college of the University of Oxford
* Greenville Technical College
* Griffin Technical College
* Gwinnett Technical College

Other uses

* Ground Training Competition, A Combined Cadet Force (Royal Air Force section) competition
* Globale Test Consulting
* Gain time control
* Game Time Card
* Gas Turbine Centre (Sweden)
* General Teaching Council (several UK)
* General Technology Corporation
* Generic Token Card
* General Terms and Conditions
* General Tso's Chicken
* Genome Therapeutics Corporation
* General Trias, Cavite
* Gigaton of Carbon, a measurement used when discussing the Carbon Cycle and Climate Change
* Globe Trade Centre, company from Poland, listed in index WIG20
* Global Trust Center, an organisation or technology to enable trust in digital interactions
* Gopher Tortoise Council
* Gran Telescopio Canarias
* Green tea catechins
* Ground tactical commander
* Grove Theater Center (Garden Grove, California
* Good 'Til Cancel
* GTC Wireless, formerly GTC Telecom
* Guild of Television Cameramen
* Gran Turismo Concept
* [] GTC is for Greek and Turkish Clarinet

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