IEM

IEM can refer to:


 * I.E.M. (album)
 * Inborn error of metabolism
 * In-ear monitors, devices used by musicians, audio engineers and audiophiles to listen to music
 * Incredible Expanding Mindfuck (Music)
 * Information Engineering Methodology
 * Institute of Electronic Music and Acoustics (Institut für Elektronische Musik und Akustik), part of the University of Music and Performing Arts, Graz
 * Institute of Engineering and Management
 * Integrated Enterprise Modeling
 * Institute of Engineering in Medicine, part of the University of California, San Diego
 * Institute for Experimental Mathematics, a central scientific facility of the University of Duisburg-Essen
 * Intel Extreme Masters, a series of international esports tournaments
 * International emergency medicine
 * Internet Explorer Mobile
 * Ion evaporation model, a model explaining electrospray ionization in mass spectrometry
 * Iowa Electronic Markets
 * Internal Energy Market, of the European Union