Individual educational development, one name for a Special education class

Improvised explosive device, an explosive device often used in unconventional warfare

Intermittent explosive disorder, a disorder of the brain.

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

Istituto Europeo di Design, The European Institute of Design

Instantaneous electrical detonator

International Endowment for Democracy, a U.S. non-profit organization.

Intelligent electronic device

Indo-European Etymological Dictionary, by Julius Pokorny

Interlingua-English Dictionary, the first major presentation of Interlingua to the public