The Okpara River is a river of Benin. Originating in Borgou Department, it flows south and becomes the border between Nigeria and Benin before re-entering Benin and flowing into the Ouémé River, which ultimately drains into the Atlantic Ocean. Several villages along the river are disputed between Benin and Nigeria.
Coordinates: 6°26′N 2°33′E / 6.433°N 2.550°E