The Serbs of Bosnia and Herzegovina are one of the three constitutive nations of the country, predominantly residing in the political-territorial entity of Republika Srpska. They are frequently referred to as Bosnian Serbs in English, regardless of whether they are from Bosnia or Herzegovina. They are also known by regional names such as Krajišnici ("frontiersmen" of Bosanska Krajina), Semberci (Semberians), Bosanci (Bosnians), Hercegovci (Herzegovinians).