IU

IU may mean:


 * Imaging unit
 * Indiana University (most often the flagship campus in Bloomington)
 * a misnomer for IUP, Indiana University of Pennsylvania
 * Integer unit
 * Interface unit
 * Interface UMTS
 * Intermediate Unit, a regional educational service agency in Pennsylvania
 * International unit, a unit for biological activity used in pharmacology
 * International University, Cambodia, private higher education institution in Phnom Penh, Cambodia
 * International University in Germany, a university in Southern Germany
 * Instrument Unit, a guidance system for the Saturn V rocket
 * Inuktitut language (ISO 639 alpha-2)
 * Istanbul University
 * Izquierda Unida ("United Left" in Spanish, political party):
 * Izquierda Unida (Argentina)
 * Izquierda Unida (Peru)
 * Izquierda Unida (Spain)
 * In-vehicle Unit

IU IU Iu IU IU IU IU IU (Watt ėßß datt?) Iu