ABC can be used as either an abbreviation or as part of a proper name.

Organizations

The most common usage of "ABC" is as part of an organizational name ...

• Anarchist Black Cross
• ABC Computer, maker of the Atanasoff Berry Computer
• ABC Futebol Clube, a Brazilian football (soccer) club
• ABC Motors, a former British vehicle manufacturer
• ABC store, an Alcoholic Beverage Control liquor store
• Alcoholic beverage control states
• Association of British Counties
• Atlanta Bread Company
• Atlantic Baptist University (formerly Atlantic Baptist College)
• Aerial Board of Control, a fictional world government organisation
• Audit Bureau of Circulations, an organization for advertisers and publications

Media companies

• American Broadcasting Company
  • ABC Radio, the radio division
• Australian Broadcasting Corporation
• Associated Broadcasting Company, a television network in the Philippines
• ABC Records, a recording label
• Diario ABC, a newspaper in Spain
• Asahi Broadcasting Corporation in Osaka, Japan
• Associated British Corporation, a former British television company

Science (not organizations)

ABC can also be used to mean a piece of technology or a concept in medicine, health, biology, economics, or mathematics:

• ABC [Yet Another BitTorrent Client], a BitTorrent client
• ABC (1906 automobile), an American car
• ABC (1920 automobile), an English car
• ABC (1922 automobile), a planned (but never built) American car
• ABC ALGOL programming language
• Abc Conjecture, in number theory
• ABC programming language
• ABC weapons for waging atomic, biological, and chemical warfare
• ABC80, a home computer sold around 1980
• ABC-Transporter Genes
• Activity-based costing
• Atanasoff Berry Computer, completed in 1942
• Abacavir, an antiviral drug developed for treatment of AIDS
• Abortion-breast cancer (ABC) hypothesis in developmental biology
• Abstain - Be faithful - Condomize, a three leg method against AIDS.
• Airway, breathing, circulation (a mnemonic in cardiopulmonary resuscitation)

Other uses

Music

• ABC, an album by The Jackson 5, which included the hit song "ABC"
• ABC, an early 1980s new wave musical group
• Another Bad Creation, an early 1990s juvenile hip hop/R&B musical group
• ABC (musical notation)

Naming and identification uses

• Archbishop of Canterbury
• American-born Chinese
• Andrew Browne Cunningham (1883–1963), British admiral
• Active Body Control, Active Suspension for Mercedes S-Class

Placenames

• ABC islands, a name for Aruba, Bonaire and Curaçao islands, all part of the Kingdom of the Netherlands
• Altnabreac railway station, United Kingdom

Miscellaneous

• The ABC Murders, a novel by Agatha Christie
• ABC Trial in the United Kingdom
• ABC the gang in Carlsbad, California. See also The White House
• Alien big cat, a possibly fictitious creature
• ABC gum, short for 'already been chewed': a late 20th-century Americanism
• America's Best Comics is a comic book publishing brand. It was set up by Alan Moore in 1999 as an imprint of Wildstorm, an idea proposed to Moore by Wildstorm founder Jim Lee when it was still under Image Comics.