IA

IA, Ia, or ia may refer to:

Arts and entertainment

 * Ia, an 1892 novelette by Arthur Quiller-Couch
 * "Iä", a fictional word in the works of H. P. Lovecraft
 * International Alliance of Theatrical Stage Employees (IATSE), which also goes by IA
 * International Artists, a record label
 * Infant Annihilator, an English deathcore band

Businesses and organizations

 * Indian Airlines, defunct airline, 1953-2011
 * Indiana Academy, a high school
 * International Academy, Bloomfield Hills, Michigan
 * Internet Archive, online digital library and host organization of the Wayback Machine
 * Iraqi Airways (IATA airline designator IA)
 * Impact assessment of public policy
 * Aircraft model prefix of Fabrica Argentina de Aviones, e.g. FMA IA 62

Government, law, and military

 * Indian Army, the Indian Army
 * Indonesian Army, the Indonesian Army
 * Individual augmentee, U.S. military person temporarily assigned to a unit
 * Indecent assault, sexual criminal offense

Language

 * Ia (cuneiform), a sign in cuneiform writing
 * Inter alia (i.a.), Latin meaning "among other things"
 * Interlingua (ISO 639-1 code: ia)
 * Romanization of Cyrillic Я letter
 * Inshallah (iA), used by English-speaking Muslims.

People

 * Ia or Violet of Persia, fourth-century martyr, feast days August 4 and September 11
 * Saint Ia of Cornwall
 * Mattias Eklundh, Swedish guitarist

Places

 * Iowa (IA), U.S. state, postal abbreviation
 * Indiana (Ia), U.S. state, older traditional abbreviation
 * Ia or Oia, Greece, on Santorini
 * Iá River, a river in Brazil

Archaeology

 * Institute of Archaeology, Chinese Academy of Social Sciences (IA)
 * IA, The Journal of the Society for Industrial Archeology
 * Internet Archaeology, an electronic journal
 * Industrial archaeology
 * Iron Age IA I, IA IIA, etc., in archaeology of Israel

Biology and medicine

 * IA (chemotherapy), with Idarubicin and cytarabine
 * Ia (genus), of vespertilionid bats
 * Phase Ia of a clinical trial
 * Immunoassay, biochemical test to measure concentrations through antibody or antigen
 * Intussusceptive angiogenesis, a type of process to create a new blood vessel

Computing and electronics

 * IA (software), a vocaloid (singing synthesizer)
 * IA-32, Intel Architecture, 32-bit
 * IA-64, Intel Architecture, 64-bit
 * Implicit authentication, by a smart device
 * Human intelligence amplification through technology
 * Intelligent agent, in artificial intelligence
 * Information architecture, the structural design of shared information
 * Information assurance, dealing with trust aspects of information

Other uses in science and technology

 * Group IA (or Ia), an obsolete designation for the group 1 elements
 * Type Ia supernova, a subtype of Type I supernova
 * Interactions of actors theory, by Gordon Pask

Other uses

 * Internal affairs (disambiguation)
 * Intermediate in Arts, an academic degree
 * Internal audit of an organization's operations
 * International affairs, alternative term for International relations, the study of politics, economics and law on a global level
 * Íþróttabandalag Akraness or ÍA, an Icelandic football team
 * Mazda2, a 2002–present Japanese subcompact car, sold in North America as the Scion iA and Toyota Yaris iA