English abbreviations from gtcpn to gtmc
- GTCPN (Greater Toronto Catholic Parent Network)
- GTCS (Gun Test and Control System)
- GTD (Getting Things Done)
- GTDRI (Georgia Teacher Duties and Responsibilities Instrument)
- GTE (Groote Eylandt Airport)
- GTEP (Georgia Teacher Evaluation Program)
- GTF (Great Falls International Airport)
- GTFL (Greater Toronto Football League)
- GTFO (Get The F**k Out)
- GTG (Got To Go (Internet chat))
- GTGN (Getty Thesaurus of Geographic Names)
- GTHL (Greater Toronto Hockey League)
- GTI (German Tank Improvement)
- GTK (Good To Know (Internet chat))
- GTK+ (GIMP Toolkit)
- GTL (Gas To Liquid)
- GTLC (Ghana Trade and Livelihood Coalition)
- GTLD (Generic Top Level Domain)
- GTLF (Global Travel and Learning Fund)
- GTM (Guatemala (ISO 3166 trigram))
- GTMC (Ghana Timber Marketing Board)
