AIA may refer to:

• Abstract Intelligent Agent, a generalization and a hypothetical essence of human intelligence
• Access to Information Act, a Canadian freedom of information act
• Aerospace Industries Association
• Air Intelligence Agency - actually Air Force Intelligence, Surveillance and Reconnaissance Agency, of the United States Air Force
• Aliens in America, an American comedy TV show
• Any of the following airports:
  • Adelaide International Airport
  • Alliance Municipal Airport in Alliance, Nebraska (IATA Code: AIA)
  • Asuncion International Airport, in Luque, Asuncion, Paraguay
  • Athens International Airport, serving Athens, the Greek capital
  • Auckland Airport in Auckland, New Zealand
• Leahy-Smith America Invents Act
• American International Airways, now known as Kalitta Air
• American Institute of Architects
• American Insurance Association
• American International Assurance, a Hong Kong-based insurance company formerly part of American International Group
• Amerindo Investment Advisors, a financial-services company
• Anglo-Irish Agreement, an agreement signed between the United Kingdom and the Republic of Ireland in 1985 which aimed to bring an end to the Troubles in Northern Ireland
• Anguilla, from its ISO 3-letter country code
• Anti-Injunction Act, a United States federal law
• Application Integration Architecture, an integration framework marketed by Oracle Corporation
• Archaeological Institute of America
• Arizona Interscholastic Association
• Art Institute of Atlanta, a private fine-art college
• Artists' International Association
• Associate of the Institute of Actuaries
• Association of International Accountants
• Association for Industrial Archaeology, a body supporting the archaeology of the Industrial Revolution in Britain
• Associazione Italiana Arbitri, the Italian association for referee
• Athletes in Action, an evangelical sports ministry
• Atmospheric Imaging Assembly, an instrument that provides imaging, from visible to extreme ultraviolet, of the Sun's corona on the SOHO spacecraft.
• Australian Institute of Architects
• Aut dromo Internacional do Algarve, a motor-racing track in Portugal
• Automated Imaging Association
• Aviation Industry Association
• Avies, an Estonian airline (ICAO code: AIA)

See also

• Aia, a small town in the Basque province of Gipuzkoa, Spain
• Aia, another Greek name for Colchis

de:AIA es:AIA eo:AIA fa:AIA it:AIA lt:AIA ja:AIA sv:AIA th: