Lutz Kühnlenz (born 24 June 1965 in Ilmenau) was an East German luger who competed in the mid-1980s.

He won the silver medal in the men's doubles event at the 1985 FIL World Luge Championships.

Even as a teenager he specialized in luge on the doubles and at the age of 18 he and his partner, René Keller, were already vice European- and World Champions in the youth competitions.

Shortly before the Olympics - although Kühnlenz and his partner still finished 6th at the 1987 World Championships in Innsbruck and successfully competed in the pre-Olympic tests for Calgary in 1988 with a World Cup victory - the "performance mandate" of Kühnlenz was withdrawn, after his wife was surprisingly revoked from a trip into a "non-socialist country".

After completing his sporting career, Lutz Kühnlenz and his wife founded a sauna company between Erfurt and Weimar, and he took some honorary positions; i.a.