GCT may refer to:
MedicineEdit
TransportEdit
- Gauge Change Train, a Japanese train
- Ghazipur City railway station, in Uttar Pradesh, India
- Grand Canyon Bar 10 Airport, in Arizona, United States
- Grand Central Terminal, in New York City
- Great Coates railway station in England
- Grimsby-Cleethorpes Transport, former municipal bus company of Grimsby and Cleethorpes, England
- Gwinnett County Transit, in Georgia, United States
Other usesEdit
- Galapagos Conservation Trust, a British charity
- Genetic coding technologies, a frequently advertised investment area
- Geometric complexity theory
- German Colonial Tovar dialect of German, spoken in Venezuela
- Global Champions Tour, a show jumping series
- Gloucester County Times, a daily newspaper in New Jersey
- Government College of Technology (disambiguation)
- Grand Chess Tour, an annual circuit of chess tournaments
- Grande Cadence de Tir (GCT) 155mm, French self-propelled artillery vehicle
- Green Card Test, used by the United States Internal Revenue Service
- Green Crescent Trust, in Sindh, Pakistan
- Greene County Tech School District, in Greene County, Arkansas, United States
- Greenwood Community Theatre, in South Carolina, United States
- GCT, a codon for the amino acid Alanine