Konstanty Tyszkiewicz
[image:Kanstantyn Tyškievič. Канстантын Тышкевіч (A. Regulski, 1868).jpg|thumb|150px|right|Konstanty Tyszkiewicz]
Count Konstanty Tyszkiewicz 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.