ISU

ISU may refer to:

• ISU (trade union), British trade union formerly known as the "Immigration Service Union"
• Integrated Security Unit
• International Skating Union
• International Seamen's Union
• International Stereoscopic Union
• ISU, the IATA airport code for Sulaimaniyah International Airport, Iraq
• Isu language, a Grassfields Bantu language of Cameroon
• Isu language (Bantu), also called Suwu or Subu, a Bantu language of Cameroon
• Isu, Nigeria, a local government area of Imo State
• Isu people, an ethnic group in Nigeria
• Isu Station on the Seoul Metropolitan Subway
• ISU-152, ISU-122, Soviet self-propelled guns
• SAP IS-U, Industry Specific Solution for Utilities
• SI, International System of Units

Educational institutions:

• Idaho State University, Pocatello, Idaho
• Illinois State University, Normal, Illinois
• Indiana State University, Terre Haute, Indiana
• International School of Ulaanbaatar, Mongolia
• International Space University, Illkirch-Graffenstaden, France
• Iowa State University, Ames, Iowa
• I-Shou University, Kaohsiung, Taiwan
• International School of Uganda, Kampala, Uganda