Definition of Aia

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
• Autódromo Internacional do Algarve, a motor-racing track in Portugal
• Automated Imaging Association
• Aviation Industry Association
• Avies, an Estonian airline (ICAO code: AIA)

Aia (, ) is a small village situated on the slopes of Mount Pagoeta in the Basque province of Gipuzkoa, Spain. It is located 30 km to the west of Donostia-San Sebastián and about 10 km inland from the coastal town of Zarautz. Aia is set amongst rolling green hills and lush green forests, and surrounded by some stunning mountain views. The town still retains its ancient character, with the large Church of San Esteban building as an impressive centrepiece. The population of Aia has gradually declined since the 1950s, to a population of 1750 in 2005.