Editing AO

{{distinguish|text=[[A0 (disambiguation)|A0]] (A followed by a zero)}}
{{wiktionary|ao|Ao|AO}}

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

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==Places==

* [[Ao (building)]]
* [[Ao, Estonia]], village in Väike-Maarja Parish, Lääne-Viru County, Estonia
* [[Ao Line]], commuter railway line in Hyōgo Prefecture, Japan
* [[Ao River (Fujian)]], in China
* [[Ao Station]], railway station in the city of Ono, Hyōgo Prefecture, Japan
* [[Aodu]], capital of Shang dynasty, near Zhengzhou
* [[Aoshima, Ehime]], island in Japan
* [[Aoshima, Miyazaki]], island in Japan
* [[Angola]] (ISO 3166-1 alpha-2 code AO)

== Arts and entertainment ==
* Adults Only, an [[Entertainment Software Rating Board#Ratings|entertainment rating]]
* AO Music (AOmusic), a world-music fusion group consisting of [[Jay Oliver]], [[Miriam Stockley]] and others
* [[Ao: The Last Hunter]], a 2010 prehistoric drama movie
* ''[[Eureka Seven: AO]]'', Japanese mecha anime television series
* [[Lord Ao]], a fictional deity in the ''Dungeons & Dragons'' universe
* [[Annoying Orange]], an American comedy web series

== Businesses and organizations ==
* AO (originally American Optical Company) eyeglass lenses, a brand now merged with [[Carl Zeiss AG|Carl Zeiss Vision]]
* [[AO Foundation]] (originally {{lang|de|Arbeitsgemeinschaft für Osteosynthesefragen}}), a non-profit organisation dedicated to the treatment of trauma and disorders of the musculoskeletal system
* [[AO Racing]], an American sports car racing team
* [[AO World]], a UK retailer of household appliances trading under the brand name ao.com
* AO, {{lang|ru-Latn|Aktsionernoye Obschestvo}} or {{lang|ru-Latn|Aktsionernoye Obshchestvo}} ({{lang|ru|акционерное общество}}), a type of Russian corporate entity; see [[open joint-stock company]]
* [[Athletics Ontario]], formally Ontario Track and Field Association (OTAF)
* [[Australian Airlines]] (IATA code AO)

== Government and politics ==
* [[Administrative Office of the United States Courts]]
* [[Administrative Officer (United Kingdom)]], a grade within the United Kingdom's Civil Service
* [[Administrative Officer (Hong Kong)]], a grade within the Hong Kong's Civil Service
* [[Autonomous oblast]], type of Russian administrative division
* [[Autonomous okrug]], type of Russian administrative division
* [[NSDAP/AO]], Foreign Organization branch of the Nazi Party
* [[Officer of the Order of Australia]], postnominal AO

== Military ==
* [[Area of operations]], a U.S. military term
* A US Navy hull classification symbol: [[List of United States Navy oilers#Fleet Oilers (AO)|Fleet oiler (AO)]]
* AO-, the prefix for [[list of firearms|several firearms]]
* [[Aviation Ordnanceman]], a United States Navy occupational rating

== Philosophy and religion ==
* [[Alpha and Omega]] (abbreviation)
* [[Ao (Māori mythology)]], a deity in Māori mythology
* [[Ao (turtle)]], a creature in Chinese mythology
* Ao, a type of [[Easter Island#Wood carving|Easter Island wood carving]]

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

== Surnames and initials ==
* [[Ao (surname)]] ({{lang|zh|敖}}), a Chinese surname
* [[Ou (surname)]] ({{lang|zh-Hans|区}}/{{lang|zh-Hant|區}} and {{lang|zh-Hans|欧}}/{{lang|zh-Hant|歐}}), romanized as Ao in Cantonese
* [[Ao Omae]] (大前 粟生, Ōmae Ao, born 1992), Japanese fiction writer
* [[Aaron Owens]] (born 1976), American streetball player

==Other uses==
* [[Alphabetical order|Alphabetically ordered]]
* [[Ao (color)]]
* [[Ao (digraph)]]
* [[Ao languages]]
* [[Ao Naga]], an Indian ethnic group
* {{lang|de|ao}} or {{lang|de|außerordentlicher}}, meaning extraordinary professor ([[academic ranks in Germany|academic rank in Germany]])
* [[Australian Open]], an annual tennis tournament in Melbourne, Australia
* A<sup>{{small|o}}</sup>, an abbreviation of "Anno", meaning "In the year" (as in [[Anno Domini]])
* [[Te Ao Māori]] (literally "The Māori world"), Māori cultures and traditions

== See also ==
* [[Alpha and Omega (disambiguation)]]
* {{lookfrom}}
* {{intitle}}
* [[A0 (disambiguation)]]

{{disambiguation}}