AO

Look up ao in Wiktionary, the free dictionary.

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

• Alphabetically ordered
• Ao (color)
• Ao languages
• Ao Naga, an Indian ethnic group
• ao or außerordentlicher, meaning extraordinary professor (academic rank in Germany)
• AO, common backronym for Australian Open
• AO, an abbreviation for Annoying Orange.

Arts and entertainment

• Adults Only, an entertainment rating
• AO Music (AOmusic), a world-music fusion group consisting of Jay Oliver, Miriam Stockley and others
• Eureka Seven: AO, Japanese mecha anime television series
• Lord Ao, a fictional deity in the Dungeons & Dragons universe

Businesses and organizations

• 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 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)
• Todd-AO

Government and politics

• Administrative Office of the United States Courts
• Angola (ISO code and NATO country code AO)
• 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
• AO, a U.S. Navy hull classification symbol for an oiler
• AO-, the prefix for several firearms
• Aviation Ordnanceman, a United States Navy occupational rating

Philosophy and religion

• Alpha and Omega (abbreviation)
• Ao (mythology), a deity in Māori mythology
• Ao (turtle), a creature in Chinese mythology
• Ao, a type of Easter Island wood carving

Science and technology

• .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

Surnames and initials

• Ao (surname) (敖), a Chinese surname
• Ou (surname) (区/區 and 欧/歐), romanized as Ao in Cantonese
• Aaron Owens (born 1976), American streetball player

See also

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