AA

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

• 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
• Academy Award, in the film industry

• Alcoholics Anonymous, support organisation
• A. A. Arms, a defunct firearms manufacturer
• Aerolíneas Argentinas, an Argentine airline
• Air Asia, an airline
• Air Austral airline, former logo
• Alcoa, a US aluminum producer, stock symbol
• American Airlines, IATA code
• Anadolu Agency, press agency, Turkey
• Arakan Army, Rakhine State, Myanmar, a rebel group
• Audio-Animatronics, used at Disney Parks
• Academia de Artes, Mexico
• Former US Amalgamated Association of Iron and Steel Workers
• Architectural Association School of Architecture, London, United Kingdom
• Astrological Association of Great Britain, London, UK
• Auswärtiges Amt, the Foreign Office of Germany
• Danish Association of Architects (Akademisk Arkitektforening)
• The AA, UK motoring organization
• AA Ireland, an Irish automotive services company
• AA Motoring Trust, merged into IAM Motoring Trust

• 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
• Iah, an ancient moon deity
• AA or A.A. (After Adam), year notation in the Mandaean calendar

• 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

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

• 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)

• 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. when writing for Punch
• Allu Arjun (born 1982), Indian actor, often abbreviated as AA in film titles

• Aa, Estonia, a village and beach in Estonia
• Aa, Indonesia, a populated place in the South Sulawesi province of Indonesia
• Albania, LOC MARC code
• Ann Arbor, a city in Michigan, United States of America
• Anne Arundel County, a county in Maryland, United States of America
• Antarctica, WMO country code
• Aruba, FIPS country code

• Aa (Nete), in the province of Antwerp, tributary of the Nete

• Aa (France)

• Aabach (Afte), formerly Große Aa, North Rhine-Westphalia
• Aa (Möhne), North Rhine-Westphalia
• Aa (Nethe), North Rhine-Westphalia
• Aa (Werre), North Rhine-Westphalia
• Bocholter Aa, North Rhine-Westphalia
• Dreierwalder Aa, North Rhine-Westphalia
• Kleine Aa (Aabach), a tributary of the Aabach in North Rhine-Westphalia
• Große Aa, a tributary of the Ems in Lower Saxony
• Große Aa (Aabach), a tributary of the Aabach in North Rhine-Westphalia
• Münstersche Aa, North Rhine-Westphalia
• Schaler Aa, Lower Saxony and North Rhine-Westphalia
• Speller Aa, Lower Saxony and North Rhine-Westphalia
• Steinfurter Aa, North Rhine-Westphalia

• Aa (Meuse), North Brabant
• Aa of Weerijs, North Brabant
• Drentsche Aa, Drenthe and Groningen
• Ruiten Aa [nl], a river in Westerwolde, Groningen

• Aabach (Aare), a tributary of the Aare, in Aargau canton
• Aabach (Greifensee) or Ustermer Aa, in canton of Zürich
• Aabach (Obersee), a tributary of Obersee (Zürichsee), in canton of St. Gallen
• Aabach (Seetal), in the cantons of Lucerne and Aargau
• Chli Aa (Sempachersee), a tributary of Lake Sempach in the canton of Lucerne
• Engelberger Aa, in the cantons of Obwalden and Nidwalden
• Gross Aa (Sempachersee), a tributary of Lake Sempach in the canton of Lucerne
• Mönchaltorfer Aa, a tributary of Greifensee in canton of Zürich
• Sarner Aa (river), Obwalden, tributary of Lake Lucerne

• Gauja, Latvia, formerly known as Livländische Aa
• Lielupe, Latvia, formerly known as Kurländische Aa

• AA amyloidosis
• Aplastic anemia, a disease
• Arachidonic acid, a polyunsaturated fatty acid
• Advanced Architecture, later Amiga Advanced Graphics Architecture
• Atlas Autocode, a computer programming language
• AA, Audible.com file format
• Authoritative Answer bit, in DNS, a flag for a query answer
• AA postulate of Euclidean geometry
• Anti-aircraft, in military use
• Attoampere (aA), 10⁻¹⁸ Ampere, a unit of electric current
• AA tree in computer science
• Abbreviation for azidoazide azide
• Anna's Archive, search engine for shadow libraries

• Double-A (baseball) or Class AA, a Minor League Baseball classification level
• American Association (1882–1891), US baseball league
• American Association (1902–1997), US baseball league
• American Association of Professional Baseball, North American baseball league
• Athletics Australia
• Amateur Athletic Union, US, since 1884

• AA Highway, Kentucky, US
• Former Ann Arbor Railroad (1895–1976), Ohio and Michigan
• Ann Arbor Railroad (1988), Ohio and Michigan
• Former K line, New York City Subway, formerly "AA"
• NZR A^A class, a New Zealand locomotive class
• Ascend Airways

• 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

• AAA (disambiguation)
• Grosse Aa (disambiguation)
• Kleine Aa (disambiguation)
• A Aa, a film
• Automobile Association (disambiguation)

This disambiguation page lists articles associated with the title AA.
If an internal link led you here, you may wish to change the link to point directly to the intended article.