Srbac is a town and municipality on the northern border of Republika Srpska, Bosnia and Herzegovina with Croatia. Srbac is located in the Republika Srpska entity at the entry of river Vrbas into river Sava. Srbac got its name from the government of Yugoslavia on November 2, 1933. Srbac is about 400 km away from Serbian capital Belgrade and 250 km away from Croatian capital Zagreb. It is situated on the mouth of the river Vrbas which then flows into Sava River which was the longest river in former Yugoslavia.
Srbac covers some 453 km² (174.9 mi²) of land in northern Bosnia situated at the entry of the river Vrbas into river Sava. Municipality consists of 39 villages. The source of the river Vrbas is about 140 km (87 mi) to the south, and the tributary rivers of Suturlija, Crkvena, and Vrbanja flow into the Vrbas at the city of Banja Luka.