Božidar Ćosović (1916–1943) was Yugoslav gendarmerie officer, carpenter and driver from Brezova, known as a military officer during the World War II. Ćosović held the rank of self-proclaimed voivode of Pećanac Chetniks and commanded the Javor Detachment. Karchmar described Ćosović as free-booting semi-bandit. Vladimir Dedijer referred to him as village bully. Ćosović was given a title of voivode by Kosta Pećanac who named a group of irregulars as Javor Chetnik Detachment. Many sources say that he was self-proclaimed voivode.