IA

IA or ia may refer to:

Places

• Ia or Oia, Greece, a small town on the island of Santorini
• Iowa, U.S. (postal abbreviation)
• Iá River, a river in Brazil

Companies and organizations

• Indian Airlines, a domestic air carrier in India
• Indian Army, part of the Military of India
• Intact America, a non-profit organization against routine infant circumcision
• International Academy, a public high-school in Bloomfield Hills, Michigan, U.S.
• International Artists, a record label
• Inuit Ataqatigiit, a left-wing party in Greenland
• Iraqi Airways, in IATA airline designator
• Iraqi Army, US military abbreviation for Iraqi Army

Language

• Insha'Allah, an Arabic word meaning "If God wills"
• Interlingua (ISO 639 alpha-2, ia)
• Inappropriate, Short of inappropriate.

People

• Ia of Persia (4th century), martyr of Persia in the 4th century
• Ia of Cornwall (5th or 6th century), saint of Cornwall
• Mattias Eklundh, Swedish guitarist

Science

• Ia (genus), of vespertilionid bats
• Ia or I-a, a subtype of Type I supernova; see Type Ia supernova
• Interactions of actors theory

Internet and information technology

• Intelligence amplification, the process of enhancing human intelligence through the use of technology
• Information architecture, the practice of structuring information (knowledge or data)
• Information assurance, dealing with trust aspects of information
• Internet Archive, a non-profit organization dedicated to maintaining an archive of web and multimedia resources
• InstallAnywhere, a Java-based software tool for creating installers or software packages, for multiple platforms
• IA-32, Intel Architecture, 32-bit
• IA-64, Intel Architecture, 64-bit

Fiction

• Irken Armada, alien invaders in the 2001-launched TV series Invader Zim
• Invasion America, a 1998 TV series
• Invasion America (board wargame), a 1976 game
• Ia, an 1892 novelette by Arthur Quiller-Couch
• "Iä", a fictional greeting in the works of H. P. Lovecraft

Other

• IA, The Journal of the Society for Industrial Archeology, an academic journal
• Individual augmentee, a U.S. military program for augmenting units with personnel from other organizations or branches of service
• Industrial archaeology, an archaeological discipline
• Initial appearance in a court of law, of a person charged with a crime
• Internal affairs (law enforcement), a division of a law enforcement agency which investigates incidents and suspicions of lawbreaking and professional misconduct attributed to officers on the force
• Internal audit, a business profession specializing in the removal of impediments to organizational objectives
• International Arbiter, a chess title awarded by the World Chess Federation
• Intraarterial injection
• inter alia, a Latin phrase meaning "among other things"
• The prefix for aircraft manufactured in the Argentinian "Fabrica Argentina de Aviones" (formerly "Fabrica militar de Aviones") since 1952.