The Parsnip River is a 240-kilometre (150 mi) long river in central British Columbia, Canada. It flows generally north-westward from the Parsnip Glacier in the Hart Ranges to the Parsnip Reach of Williston Lake, formed by the impounding of the waters of the Peace River by the W.A.C. Bennett Dam in 1968. Prior to that, the Parsnip joined with the Finlay River to form the Peace at Finlay Forks, with both sharing an alignment along the Rocky Mountain Trench.