AUT may refer to the following. Locations Austria (ISO 3166-1 country code) Agongointo-Zoungoudo Underground Town, Benin Aktio–Preveza Undersea Tunnel, Greece Airstrip on Atauro Island, East Timor (IATA airport code) Organizations Arriva UK Trains Association of University Teachers, a former British trade union Aut Even Hospital, Ireland Education Amirkabir University of Technology, Iran Auckland University of Technology, New Zealand Aristotle University of Thessaloniki, Greece American University of Technology, Lebanon Association of University Teachers a former trade union in the United Kingdom Computing Advanced and application unit testing, test techniques in computer programming Application under test, in software testing, the software that is to be tested (by other software) Atlantis Underwater Tycoon, a computer game Autonomous Things, technologies that bring autonomous computers into the physical environment Other fields An automorphism group in mathematics Automated ultrasonic testing, for pipeline construction girthwelds Aeronautica Umbra Trojani AUT.18, an Italian fighter aircraft prototype of 1939 Reporting mark for Autauga Northern Railroad Reporting mark for Auto-Train Corporation