Karol Estreicher (4 March 1906 in Kraków – 29 April 1984 in Kraków) was a Polish historian of art, writer and bibliographer, recipient of the Order of Polonia Restituta, son of Stanisław Estreicher.
He was a professor at Jagiellonian University and served as the head of the university's museum. He was engaged in the restitution of Polish works of art looted during World War II.