ABC are the first three letters of the Latin script.

ABC or abc may also refer to:

• Aliw Broadcasting Corporation, Philippine broadcast company
• American Broadcasting Company, a commercial U.S. TV broadcaster
  • Disney–ABC Television Group, the former name of the parent organization of ABC
• Australian Broadcasting Corporation, one of the national publicly funded broadcasters of Australia
  • ABC Television (Australian TV network), the national television network of the Australian Broadcasting Corporation
    • ABC TV (Australian TV channel), the flagship TV station of the Australian Broadcasting Corporation
    • ABC Canberra (TV station), Canberra, and other ABC TV local stations in state capitals
    • ABC Australia (Southeast Asian TV channel), an international pay TV channel
• ABC Radio (disambiguation), several radio stations
• Associated Broadcasting Corporation, the former name of TV5 Network, Inc., a Philippine media company
  • ABC-5, the former name of TV5, a Philippine free-to-air television network
• ABC (Swedish TV programme), a former Swedish regional news programme
• ABC Weekend TV, a former British television company
• Asahi Broadcasting Corporation, a Japanese commercial television and radio station
• Associated Broadcasting Company, a former name of Associated Television, a British television company
• African Barter Company, a pan-African barter broadcast syndication company

• ABC (Jin album), a 2007 album by rapper MC Jin
• ABC (Kreidler album), a 2014 album by Kreidler
• ABC (The Jackson 5 album), a 1970 album by The Jackson 5

• A.B.C., the former name of Japanese boy band A.B.C-Z
• ABC (band), an English pop band
• Acid Black Cherry, a Japanese rock band
• Alien Beat Club, a Danish pop and R&B band
• Another Bad Creation, an American hip hop and new jack swing group

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

• ABC song (disambiguation), several songs
• ABC notation, a musical notation language
• O₂ ABC Glasgow, a music venue

• ABC (magazine), an Italian magazine published between 1960 and 1977
• ABC (newspaper), a Spanish daily newspaper founded in 1903
• ABC (Monterrey newspaper), a Mexican newspaper founded in 1985
• ABC Color, a Paraguayan newspaper founded in 1967

• ABC Cinemas, a UK cinema chain
• Alphabet book, a type of children's book depicting the alphabet
• America's Best Comics, an imprint of DC Comics

• Agricultural Bank of China, a bank in the People's Republic of China
• Arab Banking Corporation, an international bank headquartered in Bahrain

• ABC (food), an Indonesian-based food division of the H. J. Heinz Company
• Aerated Bread Company, a British bakery and tea-room chain
• Alcoholic Beverage Control (disambiguation), or Alcoholic Beverage Commission, U.S. states' regulation over alcohol sales
• Appalachian Brewing Company, an American brewery

• ABC Motors, an English manufacturer of aircraft, aero engines and cars
• ABC Rail Guide, British railway guide published between 1853 and 2007
• ABC motorcycles, a British motorcycle manufacturer

• ABC Learning, a former Australian childcare business
• ABC (Lebanon), a chain of department stores and shopping centers, and operator of fashion boutiques in Lebanon
• ABC Stores, a chain of convenience stores in Hawaii
• Aircraft Builders Council, a provider of aviation products liability insurance
• Anglo Belgian Corporation, a diesel engine manufacturer
• Audit Bureau of Circulations (disambiguation), publication circulation auditing companies
  • Audit Bureau of Circulations (India), a non-profit circulation-auditing organisation
  • Audit Bureau of Circulations, former name for the North American non-profit industry organization Alliance for Audited Media
  • Audit Bureau of Circulations (UK), a non-profit organisation

• ABC analysis, an inventory categorization technique
• Activity-based costing, an accounting method
• Assignment for the benefit of creditors, a concept in bankruptcy law

• Abantu Batho Congress, a South African political party
• ABC (Cuba), Cuban political organization 1931–1952, named after the system for labeling its clandestine cells
• ABC Vancouver, a municipal political party in Canada
• All Basotho Convention, a political party in Lesotho
• Alliance for Barangay Concerns, a political party in the Philippines
• American Bakery and Confectionery Workers' International Union, a predecessor of the Bakery, Confectionery, Tobacco Workers and Grain Millers' International Union
• Americans Battling Communism, an anti-communist organization founded in 1947
• Anarchist Black Cross, an anarchist support organization
• Anything But Conservative, a 2008 Canadian political campaign
• Armagh City, Banbridge and Craigavon Borough Council, a local government council in Northern Ireland
• Association of Barangay Captains or Association of Barangay Councils, former names of the Philippine organization League of Barangays
• Association of British Counties, a non-party-political society

• American Baptist Convention, former name of American Baptist Churches USA
• Association of Baptist Churches in Ireland, in Ireland and the United Kingdom

• ABC Futebol Clube, a football (soccer) club based in Natal, Rio Grande do Norte, Brazil
• American Bowling Congress, which merged in 2005 with other bowling organizations to form the United States Bowling Congress
• Association of Boxing Commissions, a North American not-for-profit professional boxing and mixed martial arts organization
• Indianapolis ABCs, a 1900s Negro league baseball team

• Academia Británica Cuscatleca, a school in Santa Tecla, El Salvador
• Accessible Books Consortium, a subunit of the World Intellectual Property Organization
• Afrikan Black Coalition, a University of California student organization
• American Bird Conservancy, a non-profit membership organization
• Andres Bonifacio College, in Dipolog City, Philippines
• Association of Black Cardiologists, a North American non-profit
• Australian Bird Count, a project of the Royal Australasian Ornithologists Union

• ABC countries, Argentina, Brazil, and Chile
• ABC Islands (Alaska), Admiralty Island, Baranof Island, and Chichagof Island
• ABC islands (Leeward Antilles), Aruba, Bonaire, and Curaçao
• ABC Region, an industrial area outside of São Paulo, Brazil
• Albacete Airport, a joint civilian/military airport serving Albacete, Spain (IATA: ABC)
• Altnabreac railway station, Scotland, by National Rail code
• Appa Balwant Chowk, area of Pune, India, noted for its bookshops

• Abacavir, an antiretroviral drug used to treat HIV/AIDS
• ABC (medicine), a mnemonic for "Airway, Breathing, Circulation"
• ABC model of flower development, a genetic model
• Abortion–breast cancer hypothesis, a posited connection between breast cancer and abortion
• Alien big cat, a large feline outside its indigenous range
• Aneurysmal bone cyst, a kind of lesion
• ATP-binding cassette transporter, a transmembrane protein

• ABC, a line of computers by Dataindustrier AB
• Acorn Business Computer, a series of microcomputers announced at the end of 1983 by the British company Acorn Computers
• Atanasoff–Berry computer, an early electronic digital computer

• ABC (computer virus), a memory-resident, file-infecting computer virus
• ABC (programming language), a programming language and environment
• ABC (stream cipher), a stream cipher algorithm
• Abstract base class, a programming language concept
• Artificial bee colony algorithm, a search algorithm
• .abc, several file formats

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

• ABC dry chemical, a fire extinguishing agent
• ABC weapon (atomic, biological, and chemical), a weapon of mass destruction
• Accelerated bridge construction, a technique for building bridges
• Aerial bundled cable, for power lines
• Airborne Cigar, a British military electronic countermeasure system used during World War II
• Atomic, biological, and chemical defense; now CBRN defense (chemical, biological, radiological, and nuclear)

• ABC data collection, a descriptive functional behavior assessment method in applied behavior analysis
• Affective-behavioral-cognitive model, an attitude component model

• Active Body Control, a type of automobile suspension technology
• Advance Booking Charter, a type of air travel
• Automatic Buffer Couplers, a type of railway couplers

• ABC (1906 automobile), an American car by Albert Bledsoe Cole
• ABC (1920 automobile), an English car by ABC Motors
• ABC (1922 automobile), a planned American car

• ABC strategy, for "abstinence, be faithful, use a condom", a sex-education strategy
• ABC trial of Crispin Aubrey, John Berry and Duncan Campbell in 1978 in the United Kingdom
• Abecedarium, an inscription consisting of the letters of an alphabet
• Air batu campur, also known as ais kacang, a Malaysian dessert
• American-born Chinese, people of Chinese ethnicity born in the United States
• Andrew Cunningham, 1st Viscount Cunningham of Hyndhope (1883–1963), nicknamed ABC, British WWII admiral
• Architectural, building and construction, an industry; for example, see Industry Foundation Classes
• Australian-born Chinese, people of Chinese ethnicity born in Australia

• All pages with titles containing ABC
• All pages with titles beginning with ABC
• ABCC (disambiguation)