Ilija Trifunovic-Bircanin (Serbian Cyrillic: ????? ??????????-????????; 1877 – 3 February 1943) was a Serbian Chetnik military commander (vojvoda, ???????).
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 Mihailovic.
In the spring of 1942, he was appointed by Mihailovic as the commander of Chetniks in Dalmatia, Herzegovina, western Bosnia and southwestern Croatia.
In October 1942, Trifunovic-Bircanin and his subordinate commanders, Dobroslav Jevdevic and Petar Bacovic, were responsible for the killing of over 500 Bosnian Muslim and Bosnian Croat civilians in the Prozor region in October 1942.
He died in Split on 3 February 1943, having suffered from poor health for a considerable period of time.