IEA

IEA can be:

 Institute of Economic Affairs
 N.N. Miklukho-Maklai Institute of Ethnology and Anthropology, Moscow
 Institute of International and European Affairs, formerly the Institute of European Affairs
 Instituto Español de Andorra, a Spanish international school in Andorra
 International Association for the Evaluation of Educational Achievement
 International Energy Agency, an organisation
 International Epidemiological Association
 International Ergonomics Association
 Interscholastic Equestrian Association
 Islamic Emirate of Afghanistan, the de-facto government of Afghanistan