Other Uses
- Ground Training Competition, A Combined Cadet Force (Royal Air Force section) competition
- Game Time Card
- General Teaching Council (disambiguation) (several UK)
- Generic Token Card
- General Tso's Chicken
- Genome Therapeutics Corporation, GTC, GenomeCorp.com
- General Trias, Cavite
- Generalized tonic–clonic seizure
- Girls' Training Corps, a former girls' voluntary organisation in the United Kingdom
- Global Trust Center, an organisation or technology to enable trust in digital interactions
- Gran Telescopio Canarias, a large aperture Spanish telescope
- Green tea catechins
- Ground tactical commander
- Good 'Til Cancelled
- GTC Wireless, formerly GTC Telecom
- Gran Turismo Concept
- Grand Traverse County, Michigan
Read more about this topic: GTC