UAT may refer to:
- Union Aéromaritime de Transport, a former French airline which became Union des Transports Aériens after merging with Transports Aériens Intercontinentaux in 1963
- Universal Access Transceiver, a physical link proposed for the Automatic Dependent Surveillance-Broadcast (ADS-B) aviation technology
- University of Advancing Technology, a private, for profit, family owned institution of higher education located in Tempe, Arizona
- Universidad Autónoma de Tamaulipas, public university in the state of Tamaulipas, Mexico
- User acceptance testing
- University of Alabama-Tuscaloosa, a pejorative reference to the University of Alabama