UIT may stand for:
- University of Ibn Tofail, Kenitra, Morocco: Université Ibn-Tofail
- International Telecommunication Union, an internationally-reaching standards organization.
- unit investment trust
- User Interface Toolkit, a C++ API to Sun's XView
- Union International de Tir, an older name of the International Shooting Sport Federation
- University Institutes of Technology
- University of Tromsø, named Universitetet i Tromsø(UiT) in Norwegian.
- Usman Institute of Technology, Karachi, Pakistan
- Ho Chi Minh City University of Information Technology
- Ultrasonic impact treatment, a method for surface treatment using ultrasound