Aoa, AOA, or AoA may refer to:

Government

  • Agreement on Agriculture, a World Trade Organization treaty
  • Administration on Aging, a health agency of the United States
  • Angolan kwanza, the currency of Angola
  • Auxiliary Organizations Association, an organized body related to the California State University system
  • Analysis of Alternatives, form of trade study used by the Department of Defense

Science and health

  • Aoa affinis, a species of butterflies in the family Pieridae
  • Age of acquisition, a psycholinguistic term
  • Alpha Omega Alpha, a medical honor society
  • American Optometric Association, a health association
  • American Osteopathic Association, a medical association
  • Ammonia-oxidizing archaea performing oxidation of ammonia into nitrite (Nitrification)
  • Angle of arrival, direction from which a radio wave arrives at an antenna array
  • Angle of attack, a measure of a body through a fluid
  • Australian Orthopaedic Association, a not-for-profit organisation

Administration

  • Analysis of Alternatives, a method of analyzing choices
  • Articles of association, a document that establishes the basic details of a corporation
  • Activity on arrow, the activities on the arrows of the arrow diagramming method in project planning

Aviation

  • Air operations area, the area of an airport used for landing, takeoff, or surface maneuvering of aircraft
  • Airport Operators Association, a trade association for UK airport operators
  • American Overseas Airlines, a former transport company
  • Angle of attack, the angle between the chord line of the wing of a fixed-wing aircraft and the vector representing the relative motion between the aircraft and the atmosphere
  • Abort once around, a type of Space Shuttle abort mode

Entertainment

  • AOA (group), a South Korean girl group debuted in 2012
  • Act of Aggression, video game
  • Age of Apocalypse, a comic storyline
  • Aniplex of America, an anime licensor
  • Armies of Arcana, a tabletop war game
  • The Axis of Awesome, an Australian comedy band

Other

  • ʻAoa, a village in American Samoa
  • Adam-Ondi-Ahman, a sacred location for the Latter Day Saints
  • American Outlaws Association, a motorcycle club
  • Andrews Osborne Academy, a school
  • As-salamu alaykum, traditional meeting between Muslims, coined in late 90's by M. Shomail Haider
  • Automated online assistant, a program that attempts to assist users