Western Illinois University is a public university in Macomb, Illinois, US.
WIU may also refer to:
- Wadi International University, in Wadi al-Nasara, Syria
- Washington International University, an online unaccredited university
- Webber International University, in Babson Park, Florida, US
- Wiru language (ISO 639-3: wiu)
- Wiu, a Brazilian rapper
See also
- All pages with titles containing WIU