Lappeenrannan teknillinen yliopisto on vuonna 1969 perustettu tekniikan ja talouden tutkimukseen ja opetukseen erikoistunut tiedeyliopisto Lappeenrannassa. Opiskelijoita yliopistossa on reilut 5500 ja henkilökuntaa noin 930. Yliopistossa suoritettiin 656 perustutkintoa vuonna 2008. Valmistuneista 415 oli diplomi-insinöörejä ja 241 kauppatieteiden maistereita.
The Lappeenranta University of Technology (LUT) was established in 1969. The university campus is situated on the shore of lake Saimaa, about 7 kilometres away from the city center. It was originally planned to found a university in Vyborg, but the city was annexed by the USSR. In the '50s and '60s the Finnish Government made plans to establish University of Eastern Finland in Lappeenranta, but in the end it was decentralized in three cities: Lappeenranta, Kuopio and Joensuu. Only departments of engineering were located in Lappeenranta at that time. The Department of Business Administration was established and teaching of economics begun in 1991.