LTU may refer to:
Companies LTU Austria (LTU Billa Lufttransport Unternehmen GmbH), a former airline in Vienna, Austria LTU International, former German airline acquired by Air Berlin LTU Technologies, software company Air Lituanica, ICAO code LTU
Sports Littoisten Työväen Urheilijat, a sports club from Littoinen, Finland LTU Aquatics, the national federation for Aquatics in body of swimming of Lithuania LTU, the IOC country code for Lithuania LTU, the ISO 3166-1 alpha-3 country code for Lithuania, used by FIFA
Universities La Trobe University, university in Australia Lawrence Technological University, university in Southfield, Michigan Ling Tung University, university in Taichung, Taiwan Louisiana Tech University, university in Ruston, Louisiana Luleå University of Technology, university in Sweden
Other ISO 639:ltu or Latu language, an Austronesian language spoken in Indonesia Land treatment unit, term in bioremediation Licence to use, type of intellectual property licence LTU-Arena, former name of Merkur Spiel-Arena in Düsseldorf, Germany IATA code for Latur Airport, India
See also LT (disambiguation)