Rouleau is a town in southern Saskatchewan, Canada, on the Canadian Prairies. It lies within census Division No. 6 and Rural Municipality of Redburn No. 130. As of 2021, the population was 505, in an area of 1.65 square kilometres. Rouleau is on Highway 39 and is about 35 kilometres southwest of Regina. The town was notably the filming location of the popular Canadian sitcom Corner Gas, depicting the fictitious town of Dog River.