The Battle of Banja Luka (Turkish: Banaluka Muharebesi, Serbo-Croatian: Banjolučki boj) took place in Banja Luka, Ottoman Bosnia, on 4 August 1737, during the Austro-Russian-Turkish War. An Austrian army under Prince Joseph Hildberghausen was defeated, as it attempted to besiege the town, when it ran into a large Ottoman relief force led by Bosnian Vizier Hekimoğlu Ali Pasha.