IU may refer to:

Businesses and organizations

Sport

  • Indiana Hoosiers, the athletic program of Indiana University Bloomington, often called (technically incorrectly) "IU"
  • Islamabad United, a cricket team franchise in Pakistan Super League

Universities

  • Ilam University, a public university in Ilam, Iran
  • Indiana University, a multi-campus public university system in the state of Indiana, United States
  • Indiana University Bloomington, the system's flagship campus and often conflated with the system
  • Islamic University, Bangladesh
  • Ho Chi Minh City International University, a member institution of Vietnam Vietnam National University in Ho Chi Minh city
  • Independence University
  • International University, Cambodia, a private higher education institution in Phnom Penh, Cambodia
  • IU International University of Applied Sciences, Erfurt, Germany
  • Isra University, Hyderabad, Sindh, Pakistan
  • Istanbul University
  • Ittihad University, Ras Al Khaimah, United Arab Emirates

Other organizations

  • The IU, a Georgist political organization in London
  • Intermediate Unit, a regional educational service agency in Pennsylvania
  • Izquierda Unida ("United Left" in Spanish, political party)
  • Izquierda Unida (Argentina)
  • Izquierda Unida (Spain)
  • Super Air Jet, IATA Code IU, an Indonesian airline

Language

  • Intonational unit, a segment of speech
  • Inuktitut language (ISO 639 alpha-2)

Science, technology, and mathematics

  • Iu interface, in the RANAP telecommunications protocol
  • Instruction unit, the part of a computer CPU that manages instruction fetch and instruction issue
  • Saturn V instrument unit, a guidance system for the Saturn V rocket
  • International unit, a unit for biological activity used in pharmacology
  • Inter-universal Teichmüller theory, a mathematical theory by Shinichi Mochizuki

Arts and entertainment

  • IU (entertainer) (born 1993), South Korean singer and actress
  • I U (EP), a 2011 Japanese compilation album by IU