DCA

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)

Military

• Defence Cyber Agency, a tri-service command of the Indian Armed Forces
• Defense Communications Agency, former name of 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

Organizations

• California Department of Consumer Affairs
• Department for Constitutional Affairs of the UK government, 2003-2007
• DCA Design
• Department of Civil Aviation (Australia)
• Department of Civil Aviation (Thailand)
• Digital Communications Associates, US company
• Diyanet Center of America, Lanham, Maryland
• Drum Corps Associates, a governing body of drum corps in North America
• Dundee Contemporary Arts, Scotland
• Namibia Directorate of Civil Aviation
• Christian Democracy for Autonomies, a former political party in Italy

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

Television, film, and music

• Distributors Corporation of America, American film distribution company (1952-1959)

Transportation

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

Other uses

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