UIT may refer to:
Organisations International Telecommunication Union, an agency of the United Nations responsible for issues that concern information and communication technologies Union International de Tir, a former name of the International Shooting Sport Federation University of Tromsø – The Arctic University of Norway, (Universitetet i Tromsø – Norges arktiske universitet or UiT) University Institutes of Technology University Institute of Technology Usman Institute of Technology, Karachi, Pakistan Ho Chi Minh City University of Information Technology
Other uses UIT rail, a standard used for mounting slings and other accessories in competition shooting Unit investment trust User Interface Toolkit, a C++ application programming interface to Sun's XView Ultrasonic impact treatment, a method for surface treatment using ultrasound