Karol Grzesik, alias «Hauke» (May 30, 1890 — May 1940) was a Polish politician who worked in Upper Silesia. He was a deputy of the Sejm of Poland of the II and III convocations, Marshal of the Sejm of Silesia of the IV convocation (1935–1939), as well as President of Chorzów. Captain of the artillery reserve of the Polish Army, is one of the victims of the Katyn massacre.