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 Guide To Collide Technology 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)… (More on Gtc)