# AO

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/AO
> Markdown URL: https://mediated.wiki/source/AO.md
> Source: https://en.wikipedia.org/wiki/AO
> Source revision: 1337861462
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Not to be confused with [A0](/source/A0_(disambiguation)) (A followed by a zero).

**AO**, **aO**, **Ao**, or **ao** may refer to:

## Places

- [Ao (building)](/source/Ao_(building))
- [Ao, Estonia](/source/Ao,_Estonia), village in Väike-Maarja Parish, Lääne-Viru County, Estonia
- [Ao Line](/source/Ao_Line), commuter railway line in Hyōgo Prefecture, Japan
- [Ao River (Zhejiang)](/source/Ao_River_(Zhejiang)) (鳌江), Zhejiang, China
- [Ao River (Fujian)](/source/Ao_River_(Fujian)) (敖江), Fujian, China
- [Ao Station](/source/Ao_Station), railway station in the city of Ono, Hyōgo Prefecture, Japan
- [Aodu](/source/Aodu), capital of Shang dynasty, near Zhengzhou
- [Aoshima, Ehime](/source/Aoshima,_Ehime), island in Japan
- [Aoshima, Miyazaki](/source/Aoshima,_Miyazaki), island in Japan
- [Angola](/source/Angola) (ISO 3166-1 alpha-2 code AO)

## Arts and entertainment

- Adults Only, an [entertainment rating](/source/Entertainment_Software_Rating_Board#Ratings)
- AO Music (AOmusic), a world-music fusion group consisting of [Jay Oliver](/source/Jay_Oliver), [Miriam Stockley](/source/Miriam_Stockley) and others
- '**, a 2010 prehistoric drama film**
- *[Eureka Seven: AO](/source/Eureka_Seven:_AO)*, Japanese mecha anime television series
- [Lord Ao](/source/Lord_Ao), a fictional deity in the *Dungeons & Dragons* universe
- *[Annoying Orange](/source/Annoying_Orange)*, an American comedy web series

## Businesses and organizations

- AO (originally American Optical Company) eyeglass lenses, a brand now merged with [Carl Zeiss Vision](/source/Carl_Zeiss_AG)
- [AO Foundation](/source/AO_Foundation) (originally *Arbeitsgemeinschaft für Osteosynthesefragen*), a non-profit organisation dedicated to the treatment of trauma and disorders of the musculoskeletal system
- [AO Racing](/source/AO_Racing), an American sports car racing team
- [AO World](/source/AO_World), a UK retailer of household appliances trading under the brand name ao.com
- AO, *Aktsionernoye Obschestvo* or *Aktsionernoye Obshchestvo* (акционерное общество), a type of Russian corporate entity; see [open joint-stock company](/source/Open_joint-stock_company)
- [Athletics Ontario](/source/Athletics_Ontario), formally Ontario Track and Field Association (OTAF)
- [Australian Airlines](/source/Australian_Airlines) (IATA code AO)

## Government and politics

- [Administrative Office of the United States Courts](/source/Administrative_Office_of_the_United_States_Courts)
- [Administrative Officer (United Kingdom)](/source/Administrative_Officer_(United_Kingdom)), a grade within the United Kingdom's Civil Service
- [Administrative Officer (Hong Kong)](/source/Administrative_Officer_(Hong_Kong)), a grade within the Hong Kong's Civil Service
- [Autonomous oblast](/source/Autonomous_oblast), type of Russian administrative division
- [Autonomous okrug](/source/Autonomous_okrug), type of Russian administrative division
- [NSDAP/AO](/source/NSDAP/AO), Foreign Organization branch of the Nazi Party
- [Officer of the Order of Australia](/source/Officer_of_the_Order_of_Australia), postnominal AO

## Military

- [Area of operations](/source/Area_of_operations), a U.S. military term
- A US Navy hull classification symbol: [Fleet oiler (AO)](/source/List_of_United_States_Navy_oilers#Fleet_Oilers_(AO))
- AO-, the prefix for [several firearms](/source/List_of_firearms)
- [Aviation Ordnanceman](/source/Aviation_Ordnanceman), a United States Navy occupational rating

## Philosophy and religion

- [Alpha and Omega](/source/Alpha_and_Omega) (abbreviation)
- [Ao (Māori mythology)](/source/Ao_(M%C4%81ori_mythology)), a deity in Māori mythology
- [Ao (turtle)](/source/Ao_(turtle)), a creature in Chinese mythology
- Ao, a type of [Easter Island wood carving](/source/Easter_Island#Wood_carving)

## Science and technology

- [(697402) Ao](/source/697402_Ao), a main-belt asteroid
- [.ao](/source/.ao), top-level Internet domain code for Angola
- [Adaptive optics](/source/Adaptive_optics), an astronomical imaging technology
- [Ambient occlusion](/source/Ambient_occlusion), a shading method in computer graphics
- AMSAT-OSCAR, a [satellite naming convention](/source/AMSAT#Satellite_names)
- [Applied Optics](/source/Applied_Optics), scientific journal published by the Optical Society of America (OSA)
- [Arctic oscillation](/source/Arctic_oscillation), a climate pattern
- [Atomic orbital](/source/Atomic_orbital), in physics and chemistry
- Ao, the atomic symbol for the misidentified chemical element [Ausenium](/source/Ausenium)
- [Acridine orange](/source/Acridine_orange), a fluorescent dye
- [Authorship obfuscation](/source/Authorship_obfuscation), a privacy technique

## Surnames and initials

- [Ao (surname)](/source/Ao_(surname)) (敖), a Chinese surname
- [Ou (surname)](/source/Ou_(surname)) (区/區 and 欧/歐), romanized as Ao in Cantonese
- [Ao Omae](/source/Ao_Omae) (born 1992), Japanese fiction writer
- [Aaron Owens](/source/Aaron_Owens) (born 1976), American streetball player

## Other uses

- [Alphabetically ordered](/source/Alphabetical_order)
- [Ao (color)](/source/Ao_(color))
- [Ao (digraph)](/source/Ao_(digraph))
- [Ao Naga](/source/Ao_Naga), an ethnic group in northeastern India
- [Ao language](/source/Ao_language), a Tibeto-Burman (Sino-Tibetan) language spoken by the Ao Naga
- [Ao languages](/source/Ao_languages), a Sino-Tibetan language family of India
- *ao* or *außerordentlicher*, meaning extraordinary professor ([academic rank in Germany](/source/Academic_ranks_in_Germany))
- [Australian Open](/source/Australian_Open), an annual tennis tournament in Melbourne, Australia
- Ao, an abbreviation of "Anno", meaning "In the year" (as in [Anno Domini](/source/Anno_Domini))
- [Te Ao Māori](/source/Te_Ao_M%C4%81ori) (literally "The Māori world"), Māori cultures and traditions

## See also

- [Alpha and Omega (disambiguation)](/source/Alpha_and_Omega_(disambiguation))
- [A0 (disambiguation)](/source/A0_(disambiguation))
- *[Å](/source/%C3%85)*, a letter derived from *A* with an *O* above or beside it.

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Adapted from the Wikipedia article [AO](https://en.wikipedia.org/wiki/AO) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/AO?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.