AO
Appearance
AO may refer to:
Science and technology
- .ao, a top-level Internet domain
- Adaptive optics, an astronomical imaging technology
- Arctic oscillation, a climate pattern
- The AMSAT-OSCAR satellite naming convention
Media and entertainment
- AO Recordings, a record label
- Lord Ao, a fictional deity in the Dungeons & Dragons universe
- Anarchy Online, a role-playing game
- Adults Only, an entertainment rating
Other uses
- Ao (color)
- Ao (mythology), a deity in Māori mythology
- Ao (turtle), a creature in Chinese mythology
- Ao Naga, an Indian ethnic group
- Ao languages
- Aaron Owens (born 1976), American streetball player
- Administrative Office of the United States Courts
- Arbeitsgemeinschaft für Osteosynthesefragen, a nonprofit organization dedicated to musculoskeletal injuries
- Area of operations, a U.S. military term
- Autonomous oblast or autonomous okrug, types of administrative divisions
- Officer of the Order of Australia
- Angola, ISO code and NATO country code AO
- Australian Airlines, IATA code AO
- Ao, a type of Easter Island wood carving
- AO, a U.S. Navy hull classification symbol
- AO-, the prefix for several firearms
- Aktsionernoye obschestvo, a Russian corporate entity similar to a joint-stock company