ABA may refer to:

• American British Academy, an international IB World School in Muscat, Oman
• American Bar Association
• AB Aerotransport, a former Scandinavian airline
• IATA airport code for Abakan Airport, in Russia
• Académie des Beaux-Arts (Kinshasa)
• Aberdare railway station, in the United Kingdom
• Abscisic Acid, a plant hormone
• Alameda Ballet Academy, a ballet school in Alameda, California, United States
• Amateur Boxing Association of England
• American Bandy Association, the US bandy association
• American Bankers Association
• American Baptist Association
• American Basketball Association
• American Basketball Association (2000-)
• American Bicycle Association
• American Birding Association
• American Booksellers Association
• American Bridge Association
• Accredited Business Accountant, an accounting credential granted by the Accreditation Council for Accountancy and Taxation in the United States
• Antiquarian Booksellers Association, the senior trade body in the British Isles for dealers in antiquarian and rare books, manuscripts and allied materials.
• Applied behavior analysis, a technique used to modify behavior; frequently used to treat autism
• Architectural Barriers Act of 1968
• Asahi Broadcasting Aomori, a television station in Aomori Prefecture, Japan
• Australian Basketball Association
• Australian Broadcasting Authority
• Ternary form in music
• The ABA race condition in computer science; see ABA problem
• ABA transit number issued by the American Banking Association: see Routing transit number
• ABA Games, a Japanese creator of freeware games
• A.B.A, a character in the fighting game series Guilty Gear

See also

• Aba

es:ABA eo:ABA fr:ABA it:ABA ja:ABA sv:ABA