Col. Czesław Mączyński (9 July 1881 in Kaszyce - 15 July 1935 in Lwów) was a Polish officer, politician in the Second Polish Republic, and the Commander-in-chief of the Polish military contingent during the defense of Lwów – also called the Battle of Lemberg – throughout November 1918 (part of the Polish–Ukrainian War), as well as the Polish–Soviet War of 1920. He was the recipient of some of the highest Polish military awards including Virtuti Militari, and a subject of the 2004 monograph by Jacek Miliński from University of Łódź.