UI

UI or Ui may refer to:

In science and technology:

• An alternate symbol for the international unit (IU)
• Unit interval (data transmission)
• Universal indicator, a type of pH indicator
• Unit Injector, a fuel injection technology for diesel engines
• Urinary incontinence
• User interaction
• User interface
• Ui (digraph), a digraph used in some writing systems
• Unemployment Insurance

In education:

• University of Iceland - Reykjavík, Iceland
• University of Innsbruck - Innsbruck, Austria
• University of Indonesia - Depok, West Java and Salemba, Jakarta, Indonesia
• University of Ibadan - Ibadan, Nigeria
• University of Idaho - Moscow, Idaho
• University of Illinois - Urbana-Champaign, Chicago, and Springfield, Illinois
• University of Iowa - Iowa City, Iowa
• University of Isfahan - Isfahan, Iran
• Universities Ireland

In companies and associations:

• The United Illuminating Company
• Eurocypria Airlines, IATA airline designator
• Unix International

Other:

• Ui (band), an American post-rock band
• United Ireland
• Utility infielder, baseball player
• Ui, an ancient Phoenician colony located at the site of modern-day Tripoli in Libya
• Arturo Ui, a fictional character from The Resistible Rise of Arturo Ui by Bertolt Brecht
• Ui Hirasawa, a fictional character in the anime and manga series K-On!