Knešpolje (Serbian Cyrillic: Кнешпоље) or Knežopolje (Кнежопоље) is a region in northwestern Bosnia and Herzegovina.
It is the northwestern part of the Potkozarje geographical region, and includes a region stretching from Prijedor, Kozara mountains, Kozarska Dubica, the Una river and Kostajnica.
It is the northwestern part of the Potkozarje geographical region, and includes a region stretching from Prijedor, Kozara mountains, Bosanska Dubica, the Una river and Bosanska Kostajnica.
The region is known as a place where Serbs were persecuted by the Ustashe in World War II; Bosnian Muslim poet Skender Kulenović wrote about the Kozara tragedy.
The region's inhabitants call themselves Knežopoljci, and regard themselves Krajišnici ("frontiersmen").