| Abbreviation | Definition |
|---|---|
| UITS | University of Information Technology and Sciences |
| UIU | United International University |
| UIU | Upper Iowa University |
| UIU | Upper Iowa University's |
| UIUC | University of Illinois at Urbana Champaign |
| UIUC | University of Illinois at Urbana–Champaign |
| UIUC | University of Illinois Under Construction |
| UIUC | University of Illinois Urbana Champaign |
| UIUC | University of Illinois, Urbana Champaign |
| UIV | University and Industry Ventures |
| UIW | University of the Incarnate Word |
| UJ | University of Jerk |
| UJ | University of Johanessburg |
| UJ | University of Johannesburg |
| UJ | University of Jordan |
| UJ | University of Judaism |
| UJ | Uniwersytet Jagiellonski |
| UJB | University Judicial Board |
| UJC | University Judiciary Committee |
| UJF | Université Joseph Fourier |