Yui or YUI may refer to:
People Yui (name), a Japanese name including fictional characters Yui people or Ibi, a Timucuan-speaking people in what now is Georgia, United States
Places Yui, Shizuoka, a former town located in Shizuoka, Japan Yui Station, a railway station on the Tōkaidō Main Line in Shizuoka
Other YUI Library, an open-source JavaScript and CSS library Corrector Yui, a 1999 magical girl series Yui Rail, an alternate name for the Okinawa Urban Monorail