IU

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

• 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

• 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)

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

• 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

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

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