GCT

GCT may refer to:

Medicine

 * Germ cell tumor
 * Giant-cell tumor of bone
 * Glucose challenge test
 * Granulosa cell tumor

Transport

 * 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 uses

 * 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