IEA may refer to:
Political Entities
- the country of Afghanistan, officially named as the Islamic Emirate of Afghanistan since August 2021
- Islamic Emirate of Afghanistan (1996–2001), a previous Taliban-led state that ruled most of Afghanistan from 1996 to 2001
Education
- Instituto Español de Andorra, an international school in Spain
- International Association for the Evaluation of Educational Achievement
Policy bodies
- Institute of International and European Affairs (formerly Institute of European Affairs), an Irish think tank
- International Energy Agency, an intergovernmental organisation based in Paris
Science and medicine
- Institute of Ethnology and Anthropology, Russia
- International Epidemiological Association
- International Ergonomics Association
- Involuntary Emergency Admission, in psychiatry
Advocacy organisations
- Institute of Economic Affairs, a right-wing British lobby group
Others
- Indian Evidence Act, 1872, former evidence act in India