Bosanska Krajina is a geographical region, a subregion of Bosnia, in western Bosnia and Herzegovina. It is enclosed by a number of rivers, namely the Sava (north), Glina (northwest), Vrbanja and Vrbas. The region is also a historic, economic and cultural entity of Bosnia and Herzegovina, noted for its preserved nature and wildlife diversity.

Bosnia is the northern region of Bosnia and Herzegovina, encompassing roughly 81% of the country; the other region, the southern part, is Herzegovina.