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