Iat is a minor ancient Egyptian goddess.

The abbreviation IAT may refer to:

Organisations

• Immigration Appeal Tribunal

• Indonesia Air Transport, an Indonesian airline

• Institut aérotechnique, a French research Institute in aerodynamics

• Institute for Affordable Transportation, an American organization

• Institute of Armament Technology, now the Defence Institute of Advanced Technology, an Indian defense institution

• International Association of Trichologists

• Institute of Agricultural Technology, the former name of Kelappaji College of Agricultural Engineering and Technology

Science and technology

• Implicit-association test, a measure within social psychology

• Import Address Table, in computer programming

• Indicated air temperature

• Indirect antiglobulin test, a clinical blood test

• Information access technology

• Intake air temperature

• International Atomic Time

• Information Assurance Technical, a category for Certified Information Systems Security Professional

Other uses

• Indigenous Aryan Theory

• International ACH Transaction, a code used by the Automated Clearing House

• International Appalachian Trail, a hiking trail in the United States

• IISER Aptitude Test, an annual academic examination in India

• Iwate Asahi Television, a television station in Iwate Prefecture, Japan

• International Air Tattoo, the former name of a British air show