GTF may stand for: Companies and organizations Georgia Tech Foundation German Taekwondo Federation German Taxpayers Federation German Tennis Federation Global Tamil Forum Global Thinkers Forum, in London, England Graduate Theological Foundation, in Indiana Graphic Thought Facility, a British graphic design agency Science Gene transfer format, a file format General transcription factor, a class of protein transcription factors Glucose tolerance factor Glycosyltransferase Green tree frog (disambiguation) Technology Generalized Timing Formula, a video timings standard Geared turbofan Pratt & Whitney GTF, a turbofan engine Other Great Falls International Airport, in Montana Guam Telecommunications Facility