California student organization American Bird Conservancy, a non-profit membership organization Association of Black Cardiologists, a North American non-profit Australian Bird Count, a project of the Royal Australasian Ornithologists Union Virginia Alcoholic Beverage Control Authority, public safety agency Places 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 Science and technology Biology and medicine 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, large feline outside its indigenous range Aneurysmal bone cyst, a kind of lesion ATP-binding cassette transporter, a transmembrane protein Computing Hardware 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 File formats Other uses in computing 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 Economics ABC analysis, an inventory categorization technique Activity-based costing, an accounting method Assignment for the benefit of creditors, a concept in bankruptcy law Psychology ABC data collection, a descriptive functional behavior assessment method in applied behavior analysis Affective-behavioral-cognitive model, an attitude component model Transportation Active Body Control, a type of automobile suspension technology Automatic Buffer Couplers, a type of railway couplers Other uses in science and technology ABC dry chemical, a fire extinguishing agent ABC weapon, 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 (WWII) to jam Luftwaffe night fighter communications Atomic, biological, and chemical defense, now rendered as chemical, biological, radiological and nuclear defense Other uses 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