wiktionarypar5|AA|Aa|'A'a|aa|aA'''AA''' may refer to:TOCright== AA ===== Organizations and businesses ===Architectural Association School of Architecture, the prestigious London based School of ArchitectureArchitects' Association of Denmark (''Akademisk Arkitektforening'')The Albany Academy, an independent day school for boys in Albany, New YorkAlbuquerque Academy, an independent day school in Albuquerque, New MexicoAlcoa, an American aluminium-producing company with the stock ticker symbol AAAlcoholics Anonymous, a worldwide fellowship of persons recovering from alcoholismAligned Assets, a UK software house specialising in gazetteer management systemsAlvesta Alternative, a political party in SwedenAmalgamated Association of Iron and Steel Workers, a former union in the United StatesAmerican Atheists, an organization advocating for atheists in the United StatesAmerican Apparel, a clothing company in the United StatesAmir Adnan, a Pakistani fashion label for menAnnuaires Afrique, an African online directoryApollo Alliance, an organization advocating energy independence and renewable energy for the United StatesForeign Office (Germany) (''Auswärtiges Amt''), the Foreign Office of Germany=== Transportation ===Adelaide Airport, large Australian airportAmerican Airlines, IATA airline codeAerolíneas Argentinas, an Argentine airlineAirAsia, a Malaysian airlineAir America (airline), a CIA front that supplied covert operations during the Vietnam WarNZR AA class, a locomotive class operated by the New Zealand Railways DepartmentAnn Arbor Railroad (disambiguation), a railroad connecting Ann Arbor, Michigan and Toledo, Ohio in the United StatesSee Also Automobile Association (disambiguation)The Automobile Association, a British motoring organisationThe Automobile Association (Ireland), an Irish motoring organisationwithin a country to refer to the Automobile Association of that country, such as the New Zealand Automobile AssociationAA Motoring Trust, a British road safety charity that merged with IAM Motoring TrustAA Publishing, a trading name of The Automobile Association in the UK=== Sports, games and pastimes ===Ace Attorney, a series of courtroom based video games called Gyakuten Saiban in Japan.America's Army, a computer game published by the U.S. ArmyAmerican Association (19th century), baseballAmerican Association (20th century), baseballAmerican Association of Independent Professional Baseball started in 2006Ancient Anguish, an LPMud (computer game) in existence since 1992Class AA, a level in the Farm System of minor league baseball=== Science, medicine, mathematics and computing ===okinaAokinaā (lava flow), a type of basaltic lava flowAA, or Advanced Architecture, original name of Amiga Advanced Graphics ArchitectureAA amyloidosis, a form of amyloidosis related to Serum amyloid AAA postulate of Euclidian geometryAcademia de Artes, MexicoAggregatibacter actinomycetemcomitans, a species of bacteria found to be in association with certain types of periodontal diseaseAmplitude of accommodation, a measurement of the eye's ability to focus clearly on objects at near distancesAnti-aliasing, a computer graphics techniqueAortic aneurysmArachidonic acid, a polyunsaturated fatty acidASCII art, an artistic medium in which pictures are composed of symbols taken from the ASCII computer character setAtlas Autocode, a computer programming languageAtomic absorption spectroscopy, an instrument for measuring the content of metal in samples=== Other ===Associate of Arts degreeAA battery sizeAA Brassiere measurementAA certificate - a film rating used by the British Board of Film Classification Censors between 1970 and 1982, restricting audiences to those aged 14 and overAbhisamayalankara, or Abhisamaya-alaṅkāra, a Mahayana Buddhist text.Affirmative action, a social policy dealing with underrepresented minoritiesAfrican AmericanAgreement on Agriculture, a WTO treatyAir attaché, usually a high-ranking air force officer on the staff of an embassyAntarctica, World Meteorological Organization country codeAnti-aircraft warfare, a military term for combat against airborne enemies from the groundAmon AmarthAruba (DAFIF 0413 / DIA 65-18 / FIPS PUB 10-4 territory code)Asian Aerospace, the biggest airshow event in AsiaAsian AmericanAssumptionists, the Augustinians of the Assumption, a congregation of Catholic religious (priests and brothers)Audio AdrenalineThe production code for ''The Savages (Doctor Who)'', a ''Doctor Who'' serialAnti-aliasing filter a filter used in digital signal processingAyt AyacheAnonymous and Aggregate Data , often used in Privacy Policies on websitespocket acesAA TURRET Anti-air Turret== A∴A∴ ==A∴A∴, (Latin: Argenteum Astrum), a magical order created by Aleister Crowley== Aa ==Å, letter found in several languages including Swedish, Norwegian and Danish, which can be alternatively transcribed as "aa"Brynjar Aa, Norwegian dramatistAa, Å or Aa River, the name of several waterways in EuropeAa! Megami-sama or Oh My Goddess!, a popular anime/manga seriesAa (band), an American noise rock groupAa!, a J-Pop musical groupAa (architect), an architect in ancient EgyptAa (lava flow), a type of lava (see below)Aa (plant), a genus of orchidAa, Estonia, a village on northern coast of EstoniaAUTOart, a high quality die cast model car manufacturerVan der Aa, a Dutch namePetrus van der Aa (1530—1594), a Flemish juristPhilips van der Aa, a Dutch statesman during the Eighty Years' WarPieter van der Aa (1659—1733), a Dutch publisherTerje Aa, bridge player== 'A'ā ==okinaAokinaā (lava flow), one of three basic types of lava flow== aA ==abampere, the CGS unit of currentattoampere, 10−18 ampere, a unit of electric current== aa ==Aa (digraph)Afar language, ISO 639 alpha-2 language codeAmino acid, a subunit of which proteins are constitutedAuthoritative Answer, in DNS a flag for query answer== .aa ==a proprietary digital audio format of Audible.com== See also ==wiktionarypar3|AA|Aa|aA|aa Å (disambiguation)disambig