AA

The Simple English Wiktionary has a definition for: AA, Aa, aa, a-a, and A.A..

AA, Aa, Double A, or Double-A may refer to:

Arts, entertainment and media

• America's Army, a 2002 computer game published by the U.S. Army
• Ancient Anguish, a computer game in existence since 1992
• Aa!, a J-Pop musical group
• Double-A (band), stylised as AA, South Korean boy band
• Aa (album), a 2016 album by Baauer
• AA (song), a 2021 single by Walker Hayes
• Ace Attorney, a series of video games developed by Capcom.
• AA Films, an Indian film distribution company
• AA Book (disambiguation)
• AA, the production code for the 1966 Doctor Who serial The Savages

Brands, organizations and enterprises

• Alcoholics Anonymous, an international fellowship dedicated to helping alcoholics peer to peer in sobriety
• A. A. Arms, a defunct firearms manufacturer
• Aerolíneas Argentinas, an Argentine airline (logo used to consist of two A's)
• Air Asia, an Asian multinational low cost carrier
• Alcoa, an American aluminum-producing company (stock symbol AA)
• American Airlines, major American full-service airline (IATA airline code, logo used to consist of two A’s)
• Anadolu Agency, a state-run press agency in Turkey
• Audio-Animatronics, used at the Disney Parks
• Academia de Artes, Mexico
• Amalgamated Association of Iron and Steel Workers, a former union in the United States
• Andecha Astur, an Asturian nationalist party
• Architectural Association School of Architecture, London, United Kingdom
• Astrological Association of Great Britain, London, United Kingdom
• Auswärtiges Amt, the Foreign Office of Germany
• Danish Association of Architects (Akademisk Arkitektforening)
• The AA (formerly The Automobile Association), a British motoring organization
• AA Ireland, an Irish automotive services company
• AA Motoring Trust, a former British road safety charity operated by The AA that was merged to form the IAM Motoring Trust

Philosophy and religion

• A∴A∴, a spiritual organization created in 1907 by Aleister Crowley
• Abhisamayalankara, or Abhisamaya-alaṅkāra, a Mahayana Buddhist text
• Augustinians of the Assumption, a congregation of Catholic religious (priests and brothers)
• Statue of A'a from Rurutu, a wooden fertility-god sculpture from the Pacific island of Rurutu
• "A is A", an expression of the law of identity: each thing is identical with itself

Language

• aa, Latin-script digraph used in the orthographies of Dutch, Finnish and other languages
• aa, representation of letter Å in several Scandinavian languages
• aa, a romanization of Arabic letter alif ا
• Ꜳ, an orthographic ligature
• Afar language (ISO 639-1 language code aa)
• Aa (Bengali), a Bengali letter

Measurements

• AA, a bra size
• AA, a width in shoe sizes
• AA battery size

Nature

• Aa (plant), a genus of orchid
• Aa (snail), a subgenus of snail
• ʻAʻā or aa, a form of lava
• A term for "river" in German hydronymy, see Aach (toponymy)

People

• Aa (surname), a Scandinavian surname, including a list of people with this name
• Van der Aa (surname), a Dutch surname, including a list of people with this name
• Aa (architect), an architect in ancient Egypt
• Anthony Armstrong (writer) (1897–1972), Anglo-Canadian writer who used the pseudonym A.A.

Places

• Aa, Estonia, a village and beach in Estonia
• Aa, Indonesia, a populated place in the South Sulawesi province of Indonesia
• Ann Arbor, a city in Michigan, United States of America

Rivers

Science and technology

• AA amyloidosis, a form of amyloidosis related to serum amyloid A
• Amino acid, often abbreviated aa when indicating positions in a peptide sequence (e.g., aa 120–150)
• Antiandrogen, a drug which blocks the effects of androgens
• Aplastic anemia, a rare disease
• Arachidonic acid, a polyunsaturated fatty acid
• Advanced Architecture, original name of Amiga Advanced Graphics Architecture
• Anti-aliasing, various techniques for mitigating certain signal processing artifacts
• Atlas Autocode, a computer programming language
• AA, a proprietary digital audio format of Audible.com
• Authoritative Answer, in DNS, a flag for a query answer
• AA postulate of Euclidean geometry
• Anti-aircraft, in military use
• Abampere (aA), the CGS unit of current
• Attoampere (aA), a unit of electric current equal to 10⁻¹⁸ Ampere
• AA tree, named after Arne Andersson
• AA, the abbreviation for azidoazide azide
• AppArmor

Sports

• Double-A (baseball) or Class AA, a classification level in Minor League Baseball since 1912
• American Association (1882–1891), a professional baseball league in the United States from 1882 to 1891
• American Association (1902–1997), a professional baseball league in the United States from 1902 to 1962 and 1969 to 1997
• American Association of Professional Baseball, a professional baseball league in the United States and Canada since 2006
• Athletics Australia, national sporting organisation in Australia

Transportation

• AA Highway, a state highway in Northern Kentucky
• Ann Arbor Railroad (1895–1976), a defunct railroad in Ohio and Michigan
• Ann Arbor Railroad (1988), a railroad operating in Ohio and Michigan
• K line, a defunct line on the New York City Subway, formerly called "AA"
• NZR A^A class, a locomotive class operated by the New Zealand Railways Department

Other uses

• African American, as a cultural identity
• Asian Aerospace, an airshow in Asia
• Associate of Arts, an academic degree
• European Union Association Agreement
• Postal abbreviation for United States armed forces in the Americas
• Japanese internet slang for Shift JIS art
• Internet slang for ASCII Art

Related pages

• A (disambiguation)

This disambiguation page lists articles that are about something that can be called AA. If an internal link led you here, you may wish to change the link to point directly to the article meant.