ABC

Broadcasting media

• American Broadcasting Company, an American television network
• ABC Radio, an American radio network, formerly owned by the American Broadcasting Company
• Australian Broadcasting Corporation, an Australian Government media broadcaster
• ABC Radio (Australia), the radio division of the Australian Broadcasting Corporation
• ABC Television, the television division of the Australian Broadcasting Corporation
• ABC (TV station), the Australian Broadcasting Corporation's Canberra-based TV station
• ABC (Swedish news programme)
• Asahi Broadcasting Corporation, a Japanese commercial television and radio station
• Associated Broadcasting Company, a Philippine television network
• Associated British Corporation, a former British film and television company

Cars

• ABC (1906 automobile), an American car
• ABC (1920 automobile), an English car
• ABC (1922 automobile), a planned (but never built) American car
• ABC (1999 automotive innovation), Active Body Control, a type of automobile suspension technology

Companies

• ABC Stores (Hawaii), a chain of convenience stores
• Aerated Bread Company, a former British bakery and tea-room chain
• Appalachian Brewing Company, an American brewery
• Arab Banking Corporation
• Associated British Cinemas, a UK cinema chain
• Atlanta Bread Company, a bakery and café
• ABC Group, a department store
• Agricultural Bank of China, one of the "Big Four" banks in the People's Republic of China
• ABC Learning Centres, An Australian child care business that provides ealy childhood education programs.

Computer science

• ABC (block cipher), a block cipher algorithm
• ABC (programming language)
• ABC (stream cipher), a stream cipher algorithm
• ABC (Yet Another BitTorrent Client)
• Abstract base class, a programming construct
• Atanasoff–Berry Computer, an early electronic digital computers
• Acorn Business Computer
• Several computer models designed by Dataindustrier AB of Sweden

Mathematics

• abc conjecture, a concept in number theory
• Approximate Bayesian computation, a family of statistical techniques

Medicine and biology

• ABC (medicine), a mnemonic acronym for "Airways, Breathing, Circulation"
• ABC transporter, a transmembrane protein
• ABC Model of Flower Development, a genetic model
• Abortion-breast cancer hypothesis, a posited connection between breast cancer and abortion
• Aneurysmal bone cyst, a kind of lesion

Music

Songs and albums

• ABC (album), an album by the Jackson 5
• "ABC" (song), a song by The Jackson 5
• ABC (Jin album)
• "ABC" (Jin song)
• "ABC" (Pipettes song)
• "ABC-DEF-GHI", a song from the television show Sesame Street
• Alphabet song, any of several songs used to teach children the alphabet

Groups

• ABC (band), a UK New Wave band
• Another Bad Creation, an American R&B and rap musical group

Record labels

• ABC Classics, an Australian record label
• ABC Records, an American record label

Other

• ABC Glasgow, a music venue
• Abc notation, a musical notation language

Organizations and projects

Political

• All Basotho Convention, a political party in Lesotho
• Anarchist Black Cross, an anarchist political support organization
• Association of British Counties, an advocacy group
• Anything But Conservative, a political campaign against Conservative leader Stephen Harper in the Canadian federal election, 2008

Religious

• Association of Baptist Churches in Ireland, a group of autonomous churches in the United Kingdom (Northern Ireland) and the Republic of Ireland

Ornithological

• African Bird Club, a British ornithological charity
• American Bird Conservancy, a charitable organization
• Australian Bird Count, a project of the Royal Australasian Ornithologists Union

Sport

• American Bowling Congress, a governing body for the sport of bowling
• Asian Badminton Confederation, a governing body for the sport of badminton
• Asian Badminton Championships, a badminton tournament

Other

• African Black Coalition, a University of California student organization

Places

• ABC countries or "ABC Powers", a political term referring to Argentina, Brazil and Chile
• ABC islands (Alaska), a term referring to Admiralty Island, Baranof Island, and Chichagof Island
• ABC islands (Lesser Antilles), a term referring to Aruba, Bonaire, and Curaçao
• ABC Region, an industrial area outside of São Paulo, Brazil
• Academia Británica Cuscatleca (ABC), is a selective, mixed bi-lingual and bi-cultural school from pre-Kinder to grade 12 situated in Santa Tecla, El Salvador.

Publications

• America's Best Comics (DC), an imprint of DC Comics
• ABC (newspaper), a Spanish newspaper founded in 1903
• Alphabet book, any of several children's books depicting the alphabet
• Audit Bureau of Circulations, a circulation-auditing organization in North America
• ABC (Audit Bureau of Circulations UK), a circulation-auditing organization in the UK and Ireland

Other meanings

• ABC Dry Chemical, a fire extinguishing agent
• ABC weapons, a classification referring to Atomic, Biological, and/or Chemical warfare
• Abstinence, be faithful, use a condom, a sex education strategy
• Activity-based costing, an accounting method
• Advanced Booking Charter, a kind of air travel
• Air batu campur, a Malaysian/Singaporean dessert
• Alcoholic beverage control, the American system of state regulation of alcoholic beverage sales
• Alien big cat, a fringe science phenomenon also known as "phantom cats"
• "Always be closing", a sales phrase
• American-born Chinese, an ethnic categorization
• nickname of Andrew Cunningham, 1st Viscount Cunningham of Hyndhope, British World War II admiral
• Australian British Canadian
• Automatic Buffer Coupler
• ABC Futebol Clube, a football (soccer) club based in Natal, Brazil.