ACA
Appearance
ACA may refer to:
- Achawa language, an Arawakan language of Colombia
- Arabic chat alphabet
Arts and entertainment
- A Current Affair, an Australian television program
- American Choreography Awards
- American Composers Alliance
- American Council for the Arts, now part of Americans for the Arts
- American Country Awards
Business
- Associate Chartered Accountant, a membership type of the Institute of Chartered Accountants of Pakistan
- Alerting Communicators of America, an earlier name of American Signal Corporation
- Angel Capital Association
- Associate Chartered Accountant, a membership type of the Institute of Chartered Accountants in England and Wales
- Astronautics Corporation of America
- Australian Coal Association
Government and politics
- Affordable Care Act, shorthand for the Patient Protection and Affordable Care Act, commonly called "Obamacare"
- Allied Commission for Austria
- Anti-Corruption Agency, a Malaysian government agency
- Australian Coal Association
- Australian Communications Authority
Historical
- Army Comrades Association, or "Blueshirts", a political organization in 1930s Ireland
- Armed Peasant Association (Spanish: Asociación Campesina Armada), also known as Armed Campesino Group, a Marxist-Leninist Paraguayan rebel group
Organizations
- Academic Cooperation Association, international body to promote cooperation in higher education, based in Brussels
- Adult Children of Alcoholics, counseling and support group
- Aero Club of America, US aviation group, now the National Aeronautic Association
- American Cadet Alliance, former non-government group for military cadet activities
- American Chess Association, chess organization founded in 1857 and dissolved a few years later
- American Citizens Abroad, non-profit group advocating for American expatriates
- American Cryptogram Association, group for cryptographic puzzles
- American Crystallographic Association, scientific society
- Amputee Coalition of America, advocacy and support group
- Analytica Chimica Acta, scientific journal
- Anglican Church in America, traditionalist Anglican church body
- Army Comrades Association ("Blueshirts"), Irish militant right-wing group in 1932-1933
- Association of Canadian Archivists, professional group for Canadian historical archivists
- Atheist Community of Austin, Texas non-profit group which produces The Atheist Experience TV program
- Automóvil Club Argentino, Argentina's largest automobile association
Professional associations
- ACA International, formerly the American Collectors Association
- American Callers Association, association of square dance callers
- American Camp Association, professional and trade association for summer (and similar) camp owners and workers
- American Chiropractic Association, professional association
- Australian Counselling Association, professional association
- American Counseling Association, professional association
- American Correctional Association, professional and trade association for prisons and prison officials and employees
- Australasian Corrosion Association, Australia and New Zealand trade association
- Austrian Cockpit Association, professional pilot organization
- American College of Apothecaries, professional and trade association for independent community pharmacists
School
- Academic Cooperation Association, international group promoting cooperation in higher education, based in Brussels
- Asunción Christian Academy, an American school in Paraguay
Science, medicine and technology
- 7-ACA, 7-AminoCephalosporanic Acid
- Acrodermatitis chronica atrophicans
- Advisory Committee for Aeronautics
- Agile Combat Aircraft, forerunner to the British Aerospace EAP technology demonstrator aircraft
- Anterior cerebral artery
- Anti-cardiolipin antibodies
- Anti-centromere antibodies
Sport
- AC Ajaccio, a French professional football team
- AC Arles-Avignon, a French professional football team
- Adventure Cycling Association
- African Cricket Association
- American Canoe Association
- Argentine Cricket Association
- Australian Cricketers' Association
Transport
- ACA ICAO airline designator for [Air Canada]]
- Antioch–Pittsburg (Amtrak station), by station code, in Antioch-Pittsburg, California
- Arctic Control Area, a Canadian airspace region
- Atlantic Coast Airlines, later Independence Air
- General Juan N. Álvarez International Airport, by IATA location identifier, in Acapulco, Guerrero, Mexico