AO

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

• 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)

• Adults Only, an 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

• AO (originally American Optical Company) eyeglass lenses, a brand now merged with Carl Zeiss Vision
• AO Foundation (originally 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
• Aktsionernoye Obschestvo or Aktsionernoye Obshchestvo (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)

• 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

• Area of operations, a U.S. military term
• A US Navy hull classification symbol: Fleet oiler (AO)
• AO-, the prefix for several firearms
• Aviation Ordnanceman, a United States Navy occupational rating

• 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

• (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 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

• Ao (surname) (敖), a Chinese surname
• Ou (surname) (区/區 and 欧/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

• Alphabetically ordered
• Ao (color)
• Ao (digraph)
• Ao languages
• Ao Naga, an Indian ethnic group
• ao or außerordentlicher, meaning extraordinary professor (academic rank in Germany)
• Australian Open, an annual tennis tournament in Melbourne, Australia
• A^o, an abbreviation of "Anno", meaning "In the year" (as in Anno Domini)
• Te Ao Māori (literally "The Māori world"), Māori cultures and traditions

• Alpha and Omega (disambiguation)
• All pages with titles beginning with AO
• All pages with titles containing AO
• A0 (disambiguation)

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