Provincial Trunk Highway 20 (PTH 20) is a provincial highway in the Canadian province of Manitoba. It runs from PTH 5 and just south of Ochre River to PTH 10 in the village of Cowan. The highway provides an eastern alternative access option to Dauphin along with PTH 20A. The speed limit is 90 km/h (55 mph). PTH 20 is part of the Northern Woods and Water Route.