Gediminas Motuza-Matuzevičius (born 24 August 1946 in Vilnius)[1] is a Lithuanian geologist and author of geology textbooks.
He started his career at the Institute of Mathematics and Cybernetics of the Lithuanian Academy of Sciences as an engineer-geologist.
From 1969 to 1973 he studied for a PhD degree at the Institute for Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements in Moscow, where he defended his dissertation East Transbaikal Ore Deposit Location Pattern Study Based on Mathematical Statistics Methods.
During this period he worked in the Pamir and Altai Mountains, and in the Transbaikal area.
Motuza took part in a variety of governmental missions, including delineation of the state border between Lithuania, Russia and Latvia.