GCD

GCD may refer to:

• Greatest common divisor
  • Binary GCD algorithm
  • Polynomial greatest common divisor
  • Lehmer's GCD algorithm
• Great-circle distance
• GCD, Chinese Internet slang for the Chinese Communist Party (Template:Zh)
• 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
• Grand Central Dispatch, a parallel computing framework
• Grand Comics Database
• Grant County Regional Airport, near John Day, Oregon, United States
• Griffith College Dublin, in Dublin, Ireland
• Yukulta language, spoken in Australia