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

Arts, entertainment and media

* ''

America's Army ''America's Army'' is a series of first-person shooter video games developed and published by the U.S. Army, intended to inform, educate, and recruit prospective soldiers. Launched in 2002, the game was branded as a strategic communication devic ...

'', a 2002 computer game published by the U.S. Army * '' Ancient Anguish'', a computer game in existence since 1992 *

Aa! was a Japanese girl group in Hello! Project, formerly made up of leader and Morning Musume member Reina Tanaka, Miyabi Natsuyaki and Airi Suzuki, two Hello! Project Kids. History The group's name was chosen by producer and writer Tsunku to rep ...

, a J-Pop musical group * Double-A (band), stylised as AA, South Korean boy band * ''Aa'' (album), a 2016 album by Baauer *

AA (song) "AA" is a song by American country music singer Walker Hayes. It was released on November 19, 2021 as the third single from his third studio album '' Country Stuff the Album''. Hayes and Shane McAnally co-wrote the song with Luke Laird Luke ...

, a 2021 single by Walker Hayes *

Ace Attorney ''Ace Attorney'' is a series of visual novel adventure video games developed by Capcom. With storytelling fashioned after legal dramas, the first entry in the series, '' Phoenix Wright: Ace Attorney'', was released in 2001; since then, five ...

, a series of video games developed by Capcom. *

AA Films AA Films is an Indian motion picture distribution company, owned by Anil Thadani. It mainly distributes Hindi films Hindi cinema, popularly known as Bollywood and formerly as Bombay cinema, refers to the film industry based in Mumbai, ...

, 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 Aerolíneas Argentinas, formally Aerolíneas Argentinas S.A., is Argentina's largest airline and the country flag carrier. The airline was created in 1949 from the merger of four companies and started operations in . A consortium led by Iberia ...

, 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 American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...

, major American full-service airline (IATA airline code, logo used to consist of two A’s) *

Anadolu Agency Anadolu Agency ( tr, Anadolu Ajansı, ; abbreviated AA) is a state-run news agency headquartered in Ankara, Turkey. History The Anadolu Agency was founded in 1920 during the Turkish War of Independence by the order of Mustafa Kemal Ataturk. As ...

, a state-run press agency in Turkey *

Audio-Animatronics Audio-Animatronics (also known as simply Animatronics, and sometimes shortened to AAs) is the registered trademark for a form of robotics animation created by Walt Disney Imagineering for shows and attractions at Disney theme parks, and subse ...

, used at the Disney Parks *

Academia de Artes The Academia de Artes (AA) is the Mexican Academy of Arts founded 1967/1968 by CONACULTA for the promotion of Mexican art. Seat of the institution is the Museo Nacional de San Carlos in Mexico City. The Slogan of the Acadademy is ''elevación por e ...

, Mexico *

Amalgamated Association of Iron and Steel Workers Amalgamated Association of Iron and Steel Workers (AA) was an American labor union formed in 1876 to represent iron and steel workers. It partnered with the Steel Workers Organizing Committee of the CIO, in November 1935. Both organizations di ...

, 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 The Astrological Association is a British astrological organisation. The Astrological Association of Great Britain (AA) was formed in London on 21 June 1958. Its founding members, notably John Addey (astrologer), John Addey and Roy Firebrace, were ...

, London, United Kingdom * ''

Auswärtiges Amt , logo = DEgov-AA-Logo en.svg , logo_width = 260 px , image = Auswaertiges Amt Berlin Eingang.jpg , picture_width = 300px , image_caption = Entrance to the Foreign Office building , headquarters = Werderscher Mark ...

'', the Foreign Office of Germany *

Danish Association of Architects The Danish Association of Architects ( Danish: , abbreviated to AA), is an independent professional body for architects in Denmark. History The Danish Association of Architects was founded at the initiative of L. A. Petersen on 21 November 187 ...

(''Akademisk Arkitektforening'') *

The AA AA Limited, trading as The AA (formerly The Automobile Association), is a British motoring association. Founded in 1905, it provides vehicle insurance, driving lessons, breakdown cover, loans, motoring advice, road maps and other services. Th ...

(formerly The Automobile Association), a British motoring organization *

AA Ireland AA Ireland Ltd is an automotive services company in Ireland, founded in 1910. It provides rescue services, personal lines insurance, and travel, technical and information services. Its AA Roadwatch service supplies traffic and travel information ...

, an Irish automotive services company *

AA Motoring Trust IAM RoadSmart formerly called the Institute of Advanced Motorists (IAM) is a charity based in the United Kingdom and serving nine countries, whose objective is to improve car driving and motorcycle riding standards, and so enhance road safety, b ...

, a former British road safety charity operated by The AA that was merged to form the

IAM Motoring Trust IAM RoadSmart formerly called the Institute of Advanced Motorists (IAM) is a charity based in the United Kingdom and serving nine countries, whose objective is to improve car driving and motorcycle riding standards, and so enhance road safety, b ...

Philosophy and religion

A∴A∴ The A∴A∴ ( ) is a magical organization described in 1907 by occultist Aleister Crowley. Its members are dedicated to the advancement of humanity by perfection of the individual on every plane through a graded series of universal initiation ...

, a spiritual organization created in 1907 by Aleister Crowley *

Abhisamayalankara The "Ornament of/for Realization , abbreviated AA, is one of five Sanskrit-language Mahayana śastras which, according to Tibetan tradition, Maitreya revealed to Asaṅga in northwest India circa the 4th century AD. (Chinese tradition recognize ...

, or Abhisamaya-alaṅkāra, a Mahayana Buddhist text *

Augustinians of the Assumption The Assumptionists, officialy named the Congregation of the Augustinians of the Assumption ( la, Congregatio Augustinianorum ab Assumptione) abbreviated AA,is a Catholic clerical religious congregation of Pontifical Right for men (priests and b ...

, a congregation of Catholic religious (priests and brothers) *

Statue of A'a from Rurutu The Statue of A'a from Rurutu is a wooden sculpture of the god A'a that was made on the Pacific island of Rurutu in the Austral archipelago. In the early nineteenth century, the sculpture was given by the islanders to the London Missionary Soci ...

, 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 The romanization of Arabic is the systematic rendering of written and spoken Arabic in the Latin script. Romanized Arabic is used for various purposes, among them transcription of names and titles, cataloging Arabic language works, language e ...

letter alif ا * Ꜳ, an

orthographic ligature In writing and typography, a ligature occurs where two or more graphemes or letters are joined to form a single glyph. Examples are the characters æ and œ used in English and French, in which the letters 'a' and 'e' are joined for the first ...

* Afar language (ISO 639-1 language code aa) * Aa (Bengali), a Bengali letter

Measurements

* AA, a

bra size Bra size (also known as brassiere measurement or bust size) indicates the size characteristics of a bra. While there are a number of bra sizing systems in use around the world, the bra sizes usually consist of a number, indicating the size of th ...

* AA, a width in

shoe size A shoe size is an indication of the fitting size of a shoe for a person. There are a number of different shoe-size systems used worldwide. While all shoe sizes use a number to indicate the length of the shoe, they differ in exactly what they me ...

s * AA battery size

Nature

* ''Aa'' (plant), a genus of orchid * ''Aa'' (snail), a subgenus of snail *

ʻAʻā Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or und ...

or aa, a form of lava * A term for "river" in German hydronymy, see

Aach (toponymy) ''Aach'' (variants ''Ach'', ''Ache''; ''Aa'') is a widespread Upper German hydronym, from an Old High German ''aha'' (Proto-Germanic '' *ahwō'') "running water" (ultimately from PIE '' *hakʷā-'' "(moving) water"). The word has also been reduc ...

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) George Anthony Armstrong Willis (1897–1976), known as Anthony Armstrong, was an Anglo-Canadian writer, dramatist and essayist. A humorist who contributed to '' Punch'' and ''The New Yorker'' magazines, he wrote well-plotted crime plays inclu ...

(1897–1972), Anglo-Canadian writer who used the pseudonym A.A.

Places

Aa, Estonia Aa is a village in northern Estonia, on the southern coast of the Gulf of Finland in the eastern part of the Lüganuse Parish of Ida-Viru County, from Lüganuse. (retrieved 28 July 2021) Part of the village, including the Aa manor house, is ...

, a village and beach in Estonia *

Aa, Indonesia Aa is a populated place in the South Sulawesi province of Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, in ...

, a populated place in the South Sulawesi province of Indonesia * Ann Arbor, a city in Michigan, United States of America

Rivers

Belgium

* Aa (Nete), a river in the province of Antwerp, which joins the Nete

France

* Aa (France), a river in northern France

Germany

Aabach (Afte) The Aabach (also: ''Große Aa'') is a river in Germany, a left tributary of the river Afte. It rises near the village Madfeld, part of the town Brilon, in eastern North Rhine-Westphalia near the border with Hesse. From there it flows north bet ...

, formerly called the Große Aa, a river in North Rhine-Westphalia *

Aa (Möhne) Aa is a river of North Rhine-Westphalia, Germany. It is long and is a left tributary of the Möhne in Brilon Brilon (; Westphalian language, Westphalian: ''Brailen'') is a town in North Rhine-Westphalia, central Germany, that belongs to the ...

, a river in North Rhine-Westphalia *Aa (Nethe), a river in North Rhine-Westphalia *Aa (Werre), a river in North Rhine-Westphalia *Bocholter Aa, a river in North Rhine-Westphalia *Dreierwalder Aa, a river in 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, a river in North Rhine-Westphalia *Schaler Aa, a river in Lower Saxony and North Rhine-Westphalia *Speller Aa, a river in Lower Saxony and North Rhine-Westphalia *Steinfurter Aa, a river in North Rhine-Westphalia

Netherlands

*Aa (Meuse), a river in North Brabant, which joins the Dommel to form the Dieze *Aa of Weerijs, a river in North Brabant, which joins the Mark at Breda *Drentsche Aa, a river in Drenthe and Groningen *Mussel Aa, a river in Westerwolde (region), Westerwolde, Groningen * , a river in Westerwolde (region), Westerwolde, Groningen *Westerwoldsche Aa, a river near Oudeschans, Groningen

Switzerland

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

Latvia

*Gauja, a river in Latvia, formerly known as ''Livländische Aa'' *Lielupe, a river in Latvia, formerly known as ''Kurländische Aa''

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 1-diazidocarbamoyl-5-azidotetrazole, 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 (Eighth Avenue Local), ''K'' line, a defunct line on the New York City Subway, formerly called "AA" * NZR AA class, NZR A^A class, a locomotive class operated by the New Zealand Railways Department

Other uses

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