ABA

• AB Aerotransport, former Scandinavian airline
• IATA airport code for Abakan International Airport in Republic of Khakassia, Russia

• Alabama Broadcasters Association, United States
• Asahi Broadcasting Aomori, Japanese television station
• Australian Broadcasting Authority

• Académie des Beaux-Arts (Kinshasa), Democratic Republic of the Congo
• American British Academy, Oman

• ABA League, Adriatic first-tier basketball league
• ABA League Second Division, Adriatic second-tier basketball league
• American Basketball Association, defunct professional league (1967–1976)
• American Basketball Association (2000–present), semi-professional league
• Australian Basketball Association, defunct semi-professional entity

• Amateur Boxing Association of England, former name of England Boxing
• American Bandy Association
• American Bicycle Association
• American Bridge Association

• American Bankers Association
• American Bandmasters Association
• American Bar Association, an association of lawyers
• American Beverage Association, beverage industry lobby organization
• American Booksellers Association
• American Bus Association
• Antiquarian Booksellers Association, a trade body in the British Isles
• Association of Black Anthropologists
• Australian Banking Association
• Australian Booksellers Association
• American Bantam Association

• ABA Chemicals, a Chinese chemical manufacturing company
• ABA Games, a Japanese creator of freeware games
• Alabama Baptist Association, United States
• American Baptist Association, a Baptist denomination predominant in the American South
• American Bell Association International
• American Birding Association
• Australian Blue Asbestos, mining, bagging and blue asbestos distribution company
• Australian Breastfeeding Association

• ABA routing transit number, a bank code used in the United States
• Accredited Business Accountant, American accountancy credential

• Altbachisches Archiv, collection of 17th-century music, most written by the Bach family
• A-B-A, the ternary form in music

• ABA, the National Rail code for Aberdare railway station, Wales, UK

• ABA problem, a multithreading computing anomaly
• A.B.A, a character in the fighting game series Guilty Gear
• Abé language of Ivory Coast
• Abscisic acid, a plant hormone
• Applied behavior analysis, a type of one-to-one behavioural therapy
• Architectural Barriers Act of 1968, act of the US Congress

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• Abas (disambiguation)
• Abba (disambiguation)
• Aba (disambiguation)

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