IED

IED is a three-letter abbreviation which may refer to:

• Improvised explosive device, an explosive device often used in unconventional warfare
• Istituto Europeo di Design, The European Institute of Design
• Institution of Engineering Designers, an UK Engineering Council ECUK registered professional society
• Indo-European Etymological Dictionary, by Julius Pokorny
• Instantaneous electrical detonator
• Interlingua-English Dictionary, the first major presentation of Interlingua to the public
• Intermittent explosive disorder, a disorder of the brain.
• International Endowment for Democracy, a U.S. non-profit organization.
• Intelligent electronic device
• Intelligent edge device, an interface device supporting complex protocols and packet encapsulations to manage diverse network topologies and deliver new services
• Immigration Employment Document, in the context of UK Immigration Documentation.
• Institute for Educational Development, at the Aga Khan University
• Individual educational development, one name for a Special education class
• Inter-ictal Epileptiform Discharge, a characteristic of Epileptic seizures.
• Intermittent Explosive Disorder - Mental illness.