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.