Count Konstanty Tyszkiewicz (; 1806 in Lahojsk – 1868) was a Polish-Lithuanian noble, archaeologist and ethnographer.
He studied the history of Grand Duchy of Lithuania. He was also the brother of Eustachy Tyszkiewicz.
References Reda GRIŠKAITĖ, Konstantinas Tiškevičius ir Neris, arba Kelionė ir Knyga