Ilija Trifunović-Birčanin (Serbian Cyrillic: Илија Трифуновић-Бирчанин; 1877 – 3 February 1943) was a Serbian Chetnik military commander (vojvoda, војвода). He took part in the Balkan Wars and World War I and afterwards served as the president of the Association of Serb Chetniks for Freedom and the Fatherland in the Kingdom of Yugoslavia. Beginning in 1941 he collaborated with the Italians under the awareness and condonation of supreme Chetnik commander Draža Mihailović. In the spring of 1942, he was appointed by Mihailović as the commander of Chetniks in Dalmatia, Herzegovina, western Bosnia and southwestern Croatia. In October 1942, Trifunović-Birčanin and his subordinate commanders, Dobroslav Jevđević and Petar Baćović, were responsible for the killing of over 500 Bosnian Muslim and Bos