Big River is a town located on the southern end of Cowan Lake in north central Saskatchewan, Canada.

It is just north of Saskatchewan's extensive grain belt on Highway 55 (part of the inter-provincial Northern Woods and Water Route) and about 16 kilometres (10 mi) west of Prince Albert National Park.

Except for some land cleared for farming and a few natural meadows, the town is surrounded by the northern boreal forest.

Big River began as a company town created as a base for the lumber industry at the turn of the 20th century.

It has 16 campsites, lake and beach access, modern washrooms/showers, a camp kitchen, a boat launch, a fish cleaning station, and a children's playground.