DCA may refer to:

Computers

  • Document Content Architecture, an IBM document standard
  • Dynamic Channel Allocation/Assignment, in wireless networks
  • DTS Coherent Acoustics in DTS (sound system)

Government

  • California Department of Consumer Affairs
  • Department for Constitutional Affairs of the UK government, 2003-2007
  • Department of Civil Aviation (Australia)
  • Department of Civil Aviation (Thailand)
  • Namibia Directorate of Civil Aviation

Military

  • Agreement on Defense Cooperation between the Czech Republic and the United States of America, known as the Defense Cooperation Agreement
  • Agreement on Defense Cooperation between Finland and the United States of America, known as the Defense Cooperation Agreement
  • Defence Cyber Agency, a tri-service command of the Indian Armed Forces
  • Defense Communications Agency, former name of the US Defense Information Systems Agency
  • Defensive counter air (Défense contre les aéronefs), French term for air defense
  • Deputy Commandant for Aviation, principal advisor on all aviation matters in the United States Marine Corps
  • Dual-capable aircraft, used in nuclear sharing

Companies and other organizations

  • Christian Democracy for Autonomies, a former political party in Italy
  • DCA Design, a product design and development company based in Warwick, England
  • Digital Communications Associates, an American company
  • Distributors Corporation of America, American film distribution company (1952-1959)
  • Diversity Council Australia, an Australian independent not-for-profit, promoting diversity and inclusion in the workplace
  • Diyanet Center of America, a non-profit center funded by the Turkish Government in Lanham, Maryland, US
  • Drum Corps Associates, a governing body of drum corps in North America
  • Dublin Castle administration, Ireland
  • Dundee Contemporary Arts, Scotland

Science and technology

  • Detrended correspondence analysis, a statistical technique
  • Dichloroacetic acid / dichloroacetate, an organic acid
  • Dichloroethanes, organic solvents
  • Digitally-controlled amplifier
  • Direct coupling analysis, a method for analyzing sequence data in computational biology
  • Directional component analysis, a multivariate statistical technique used in the atmospheric sciences
  • Drone congregation area, a location where bees gather to mate

Transportation

  • DCA, IATA code for Ronald Reagan Washington National Airport, Arlington County, Virginia, US
  • Dutch Caribbean Airlines, former Netherlands Antilles airline

Other uses

  • Debt Collection Agency, companies specialized in pursuing payments of debts
  • Direct corporate access, part of UK Faster Payments Service
  • Disney California Adventure, Anaheim, California, US
  • Dollar cost averaging, an investment strategy

See also

  • DCAS (disambiguation)