Božidar Ćosić (Serbian Cyrillic: Божидар Ћосић; born 25 July 1982) is a former Serbian professional footballer. Born in Šabac, SR Serbia, he played with FK Železnik in the First League of Serbia and Montenegro, with FC Khimki in Russian second level, with FK Modriča in the Bosnian Premier League, and with Debreceni VSC in Nemzeti Bajnokság I. In 2009, he moved to Romania where he played for numeros clubs in the Liga II.