ACA may refer to:

Arts and entertainment

* ''A Current Affair'' (Australian TV series), an Australian television program * Actors Centre Australia, a private dramatic arts school *

American Choreography Awards The American Choreography Awards was a ceremony and show that honored outstanding choreographers in the fields of feature film, television, music videos, and commercials. They were first known as the L.A. Dance Awards (1994–95), then as Bob Fos ...

American Composers Alliance The American Composers Alliance (ACA) is an American nonprofit composer service organization dedicated to the publishing and promoting of American contemporary classical music. Founded in 1937 by Aaron Copland, Milton Adolphus, Marion Bauer and ...

* American Council for the Arts, now part of Americans for the Arts *

American Country Awards The American Country Awards (ACA) was an annual country music awards show, entirely voted on by fans online. Created in 2010 by Fox, the awards honor country music artists for singles, albums, music videos and touring categories. In 2012, "Song of ...

Aviation

Advisory Committee for Aeronautics The Advisory Committee for Aeronautics (ACA) was a UK agency founded on 30 April 1909, to undertake, promote, and institutionalize aeronautical research. In 1919 it was renamed the Aeronautical Research Committee, later becoming the Aeronautical ...

Aero Club of America The Aero Club of America was a social club formed in 1905 by Charles Jasper Glidden and Augustus Post, among others, to promote aviation in America. It was the parent organization of numerous state chapters, the first being the Aero Club of New E ...

, US aviation group, now the National Aeronautic Association * Agile Combat Aircraft, forerunner to the British Aerospace EAP technology demonstrator aircraft *

Air Canada Air Canada is the flag carrier and the largest airline of Canada, by size and passengers carried. Air Canada is headquartered in the borough of Saint-Laurent in the city of Montreal. The airline, founded in 1937, provides scheduled and cha ...

, by ICAO airline designator *

American Champion Aircraft American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, p ...

, a US light aircraft manufacturer * Arctic Control Area, a Canadian airspace region *

Astronautics Corporation of America Astronautics Corporation of America (ACA) was established in 1959 and is a US supplier, designer, and manufacturer of avionics equipment to airlines, governments, commercial and defense aircraft manufacturers, and other avionics systems integrator ...

Atlantic Coast Airlines Atlantic Coast Airlines (ACA) was an airline based in the United States owned by Atlantic Coast Holdings, Inc. It operated as United Express for United Airlines and Delta Connection for Delta Air Lines. It was headquartered in the Dulles area o ...

, later Independence Air * Austrian Cockpit Association, professional pilot organization * IATA airport code for

Acapulco International Airport Acapulco International Airport (), officially ''Aeropuerto Internacional General Juan N. Álvarez'' (General Juan N. Álvarez International Airport) , is an international airport located in Acapulco, Guerrero, Mexico. It serves as a gateway to A ...

in State of Guerrero, Mexico

Business

* Alerting Communicators of America, an earlier name of

American Signal Corporation American Signal Corporation (ASC) is an outdoor warning siren and mass notification company in the United States. ASC was founded in 1873 as Biersach and Niedermeyer (B&N). After performing poorly, the company reformed as Alerting Communicat ...

* Angel Capital Association * Australian Coal Association

Government and politics

Accessible Canada Act The ''Accessible Canada Act'' (ACA; ) is a Canada-wide accessibility act that applies to the federal public sector, Crown corporations, and all federally-regulated organizations, building on the ''Canadian Human Rights Act'', and focuses on the ...

Affordable Care Act The Affordable Care Act (ACA), formally known as the Patient Protection and Affordable Care Act (PPACA) and informally as Obamacare, is a landmark U.S. federal statute enacted by the 111th United States Congress and signed into law by Presid ...

, shorthand for the Patient Protection and Affordable Care Act, commonly called "Obamacare" *

Allied Commission Following the termination of hostilities in World War II, the Allies were in control of the defeated Axis countries. Anticipating the defeat of Germany, Italy and Japan, they had already set up the European Advisory Commission and a proposed Far ...

for Austria *

Anti-Corruption Agency An anti-corruption agency is a special police agency specialised in fighting political corruption and engaging in general anti-corruption activities. Most are founded by statute, but some have a constitutional status. List * : Oficina Anticorru ...

, a Malaysian government agency * Australian Coal Association *

Australian Communications Authority The Australian Communications and Media Authority (ACMA) is an Government of Australia, Australian government statutory authority within the Department of Communications and the Arts, Communications portfolio. ACMA was formed on 1 July 2005 wit ...

Historical *

Army Comrades Association The Army Comrades Association (ACA), later the National Guard, Young Ireland and finally League of Youth, known by the nickname the Blueshirts (), was a paramilitary organisation in the Irish Free State, founded in 1932.New Irish Army Arises, Ne ...

, or "Blueshirts", a political organization in 1930s Ireland * Armed Peasant Association (Spanish: ), also known as Armed Campesino Group, a Marxist–Leninist Paraguayan rebel group

Organizations

Academic Cooperation Association An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of tertiary education. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the go ...

, international body to promote cooperation in higher education, based in Brussels *

Adult Children of Alcoholics Adult Children of Alcoholics & Dysfunctional Families (ACA or ACOA) founded circa 1978 is a fellowship of people who desire to recover from the effects of growing up in an alcoholic or otherwise dysfunctional family. ACA membership has few formal r ...

, counseling and support group *

African Cashew Alliance The African Cashew Alliance (ACA) is an international organization established in 2006 and dedicated to promoting the growth of the cashew industry in Africa. The ACA provides African cashew farmers with technical assistance and best practices, fa ...

, international organization for promoting Africa's cashew industry * 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 American Citizens Abroad, Inc. (ACA) is a 501(c)(4) non-profit, non-partisan organization, organized as a Delaware corporation. Its sister organization, American Citizens Abroad Global Foundation (ACAGF), is a 501(c)(3) non-profit non-partisan ch ...

, non-profit group advocating for American expatriates *

American Cryptogram Association The American Cryptogram Association (ACA) is an American non-profit organization devoted to the hobby of cryptography, with an emphasis on types of codes, ciphers, and cryptograms that can be solved either with pencil and paper, or with computers ...

, group for cryptographic puzzles *

American Crystallographic Association The American Crystallographic Association, Inc. (ACA) is a non-profit, scientific organization for scientists who study the structure of matter via crystallographic methodologies. Since its founding in 1949 it has amassed over 2000 members worldwi ...

, scientific society * Amputee Coalition of America, advocacy and support group * ''

Analytica Chimica Acta ''Analytica Chimica Acta'' is a peer-reviewed scientific journal published since 1947 that covers original research and reviews of fundamental and applied aspects of analytical chemistry Analytical skill, Analytical chemistry studies and uses ...

'', scientific journal *

Anti-Communist Action Anti-Communist Action, also shortened to Anticom, is a right-wing to far-right political organization based in the United States and Canada. The group has described itself as " the right's response to antifa." Anticom has espoused neo-Nazi id ...

, a far-right organization ** NSC-131, a neo-Nazi group *

Anglican Church in America The Anglican Church in America (ACA) is a Continuing Anglican church body and the United States branch of the Traditional Anglican Church (TAC). The ACA, which is separate from the The Episcopal Church, Episcopal Church (TEC), is not a member of ...

, traditionalist Anglican church body * Army Comrades Association ("

Blueshirts The Army Comrades Association (ACA), later the National Guard, Young Ireland and finally League of Youth, known by the nickname the Blueshirts (), was a paramilitary organisation in the Irish Free State, founded in 1932.New Irish Army Arises, Ne ...

"), Irish militant right-wing group in 1932-1933 *

Association of Canadian Archivists The Association of Canadian Archivists (ACA), established in 1975, is a national not-for-profit organization representing over 600 archivists (and those interested in archives and archivists) in Canada. With headquarters in Ottawa Ottawa is ...

, professional group for Canadian historical archivists * Atheist Community of Austin, Texas non-profit group which produces ''

The Atheist Experience The Atheist Experience is an American live, weekly televised webcast based in Austin, Texas, United States. Listeners are encouraged to call in to discuss the existence of God and related topics. Calls from theists are usually given priority, a ...

'' TV program * '' Automóvil Club Argentino'', Argentina's largest automobile association *

Automobile Club of America The Automobile Club of America (ACA) was the first automobile club formed in America in 1899. The club was dissolved in 1932 following the Great Depression and declining membership. History Early history On June 7, 1899, a group of gentlemen ...

Professional associations

* ACA International, formerly the American Collectors Association *

American Callers Association The American Callers Association (ACA) is the second largest association of square dance callers in the United States. ACA is a non-profit organization with headquarters at Muscle Shoals, Alabama. ACA has members in the United States, Canada, ...

, association of square dance callers *

American Camp Association The American Camp Association (ACA), formerly known as the American Camping Association, is a 501(c)(3) nonprofit that serves the United States. It is an association for camp owners, camp professionals and others interested in summer camps and s ...

, professional and trade association for summer (and similar) camp owners and workers *

American Chiropractic Association The American Chiropractic Association (ACA), based in Arlington, Virginia, is an organization that promotes the pseudoscientific concept of chiropractic and its practitioners. Purpose and mission The stated mission of the ACA is to improve the ...

, professional association *

American Coatings Association The American Coatings Association (ACA) is a non-profit trade association representing the paint and coatings industry in the United States. ACA advocates on legislative and regulatory matters that affect its membership, including paint and coati ...

, professional and trade association for paint and coatings industry * American College of Apothecaries, professional and trade association for independent community pharmacists *

American Correctional Association The American Correctional Association (ACA; called the National Prison Association before 1954) is a private, non-profit, non-governmental trade association and accrediting body for the corrections industry, the oldest and largest such associati ...

, professional and trade association for prisons and prison officials and employees *

American Counseling Association The American Counseling Association (ACA) is a membership organization representing licensed professional counselors (LPCs), counseling students, and other counseling professionals in the United States. It is the world's largest association exclus ...

, professional association *

Australasian Corrosion Association The Australasian Corrosion Association (ACA) is a non-profit membership association, headquartered in the state of Victoria, Australia and active in the Australasian region (mainly Australia and New Zealand), which disseminates information on cor ...

, Australia and New Zealand trade association * Australian Counselling Association, professional association

School

, international group promoting cooperation in higher education, based in Brussels

Science and technology

7-ACA 7-ACA (7-aminocephalosporanic acid) is the core chemical structure (a synthon) for the synthesis of cephalosporin antibiotics and intermediates. It can be obtained by chemoenzymatic hydrolysis of cephalosporin C. The production of 7-ACA (7-amino ...

, 7-aminocephalosporanic acid *

Azodicarbonamide Azodicarbonamide, ADCA, ACA, ADA, or azo(''bis'')formamide, is a chemical compound with the molecular formula . It is a yellow to orange-red, odorless, crystalline powder. It is sometimes called "the yoga mat chemical" because of widespread use i ...

, a chemical foaming agent * ACA, a

codon Genetic code is a set of rules used by living cells to translate information encoded within genetic material (DNA or RNA sequences of nucleotide triplets or codons) into proteins. Translation is accomplished by the ribosome, which links prote ...

for the amino acid

threonine Threonine (symbol Thr or T) is an amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form when dissolved in water), a carboxyl group (which is in the deprotonated −COO− ...

Anterior cerebral artery The anterior cerebral artery (ACA) is one of a pair of cerebral arteries that supplies oxygenated blood to most midline portions of the frontal lobes and superior medial parietal lobes of the brain. The two anterior cerebral arteries arise from th ...

Anti-cardiolipin antibodies Anti-cardiolipin antibodies (ACA) are antibodies often directed against cardiolipin and found in several diseases, including syphilis, antiphospholipid syndrome, livedoid vasculitis, vertebrobasilar insufficiency, Behçet's syndrome, idiopathi ...

Anti-centromere antibodies Antinuclear antibodies (ANAs, also known as antinuclear factor or ANF) are autoantibodies that bind to contents of the cell nucleus. In normal individuals, the immune system produces antibodies to foreign proteins (antigens) but not to human pro ...

Acrodermatitis chronica atrophicans Acrodermatitis chronica atrophicans (ACA) is a skin rash indicative of the third or late stage of European Lyme disease, Lyme borreliosis. ACA is a dermatology, dermatological condition that takes a chronically progressive course and finally le ...

* ACA₀, an axiom system in

reverse mathematics Reverse mathematics is a program in mathematical logic that seeks to determine which axioms are required to prove theorems of mathematics. Its defining method can briefly be described as "going backwards from the theorems to the axioms", in cont ...

* All common ancestors (ACA) point, also known as the identical ancestors point

Sport

Adventure Cycling Association Adventure Cycling Association is a nonprofit member organization focused on travel by bicycle (bicycle touring). Headquartered in Missoula, Montana, Adventure Cycling develops cycling routes, publishes maps, provides guided trips, and advocates ...

African Cricket Association The Africa Cricket Association (ACA) is an international body which coordinates the development of Cricket in Africa. The ACA was founded in 1997. It is subordinate to the International Cricket Council, the council is the continent's regional ad ...

American Canoe Association The American Canoe Association (ACA) is the oldest and largest paddle sports organization in the United States, promoting canoeing Canoeing is an activity which involves paddling a canoe with a single-bladed paddle. In some parts of Euro ...

Argentine Cricket Association The Argentine Cricket Association (Spanish: ''Asociación de Críquet Argentino''; ACA), also known as Cricket Argentina, is the governing body for sport of cricket in Argentina. The organization was established in 1913, it has been an associate me ...

Australian Cricketers' Association The Australian Cricketers' Association (ACA) is an organisation that represents the professional first-class cricketers of Australia, both past and present. It is not a formally registered Trade Union, but an Incorporated Association. Current ad ...

AC Ajaccio Athletic Club Ajaccien (), commonly referred to as AC Ajaccio, ACA or simply Ajaccio, is a French professional football club based in the city of Ajaccio on the island of Corsica. The club was founded in 1910 and plays in the Ligue 2, the sec ...

, a French professional football team *

AC Arles-Avignon AC, A.C., A/C, or Ac often refers to: * Air conditioning, often abbreviated as A/C * Alternating current, a type of electrical current in which the current repeatedly changes direction AC, A.C. or Ac may also refer to: Arts and entertainment G ...

, a French professional football team *

Absolute Championship Akhmat Absolute Championship Akhmat (ACA), formerly known as Absolute Championship Berkut (ACB), is a Chechen mixed martial arts, kickboxing and Brazilian jiu-jitsu organization and one of the leading promotions in Europe. To date, most events have been h ...

, a mixed martial arts, kickboxing and Brazilian jiu-jitsu promotion based in Russia

Transport

* Antioch–Pittsburg (Amtrak station), by station code, in Antioch-Pittsburg, California

Other uses

* aca, the ISO 639 code for the

Achawa language Achagua, or Achawa (), is an Arawakan language spoken in the Meta Department of Colombia, similar to Piapoco. It is estimated that 250 individuals speak the language, many of whom also speak Piapoco or Spanish Spanish might refer to: * Items ...

of Colombia * ACA Neo Geo, a series of

Neo Geo The , stylized as NEO•GEO, is a video game platform released in 1990 by Japanese game company SNK Corporation. It was initially released in two ROM cartridge-based formats: an arcade system board (Multi Video System; MVS) and a home video gam ...

re-releases made by

Hamster Corporation is a Japanese video game publisher, with office located in Setagaya, Tokyo, Japan. The game division of Toshiba-EMI Limited spun off Hamster Corporation in November 1999. On the Japanese PlayStation Store, more than 360 titles are distribut ...

and

SNK is a Japanese video gaming and interactive entertainment company. It was founded in 1978 as by Eikichi Kawasaki and began by developing arcade games. SNK is known for its Neo Geo arcade system on which the company established many franchises ...

, derived from ''

Arcade Archives is a series of emulated arcade games from the late 1970s, 1980s, 1990s and early 2000s developed and published by Hamster Corporation. A sub-series called focuses on re-releasing Neo Geo titles in their original arcade format, unlike many s ...

''. *

Arabic chat alphabet The Arabic chat alphabet, also known as ''Arabizi'', ''Arabeezi'', ''Arabish'', Franco-Arabic or simply Franco (from ) refer to the romanized alphabets for informal Arabic dialects in which Arabic script is transcribed or encoded into a combinati ...