Map of the region with towns.
Bosanska Krajina (Cyrillic: Босанска Крајина), pronounced [bɔ̌sanskaː krâjina]; sometimes translated as Bosnian Frontier) or, sometimes, simply just Krajina, is a geographical region, a subregion of Bosnia, in western Bosnia and Herzegovina enclosed by a number of rivers, namely the Sava (north), Glina (northwest), Vrbanja and Vrbas (east and southeast, respectively). The region is also a historic, economic and cultural entity of Bosnia and Herzegovina, famous for its natural beauties and wildlife diversity.
The largest city, and its historical center is Banja Luka. Other cities include Bihać, Cazin, Velika Kladuša, Prijedor, Sanski Most, Gradiška, Kozarska Dubica, Novi Grad, Bosanska Krupa, Ključ, Bosanski Petrovac, Kotor Varoš, Šipovo, Mrkonjić Grad, Drvar, Bosansko Grahovo, Gornji Vakuf, Bugojno, Donji Vakuf, Jajce, Kneževo, Bužim, Laktaši, and Čelinac.
Bosanska Krajina is not a formal entity within the structure of Bosnia and Herzegovina; however it has a significant cultural and historical identity that was formed through several historic and economic events. The territory of Bosanska Krajina is currently divided between two entities of Bosnia and Herzegovina: Republika Srpska and the Federation of Bosnia and Herzegovina.