The river Bosna (Cyrillic: Босна) is the third longest river in Bosnia and Herzegovina, and is considered one of the country's three major internal rivers, along with the Neretva and Vrbas Rivers; the other three major rivers of Bosnia and Herzegovina are the Una, to the northwest, the Sava, to the north, and the Drina, to the east. It is the namesake of Bosnia. The Bosna flows for .