GCD

GCD may refer to:
 * Great-circle distance
 * GCD, Chinese Internet slang for the Chinese Communist Party
 * General content descriptor, a wireless device file format
 * Geneva Consensus Declaration, a non-binding anti-abortion statement signed by a handful of nations
 * Global Cities Dialogue, an international development organisation
 * Global Credit Data, a credit data pooling organisation
 * Grand Central Dispatch, a parallel computing framework
 * Grand Comics Database
 * Grant County Regional Airport, near John Day, Oregon, United States
 * Greatest common divisor
 * Binary GCD algorithm
 * Polynomial greatest common divisor
 * Lehmer's GCD algorithm
 * Griffith College Dublin, in Dublin, Ireland
 * Yukulta language, spoken in Australia