Minnesota State Highway 308 (MN 308) is a short 1.277-mile-long (2.055 km) highway in northwest Minnesota, which runs from its intersection with State Highway 11 in Ross Township (near the unincorporated community of Fox); and continues northbound for 1.3 mile to its northern terminus at its intersection with State Highway 89 in Ross Township.

Highway 89 continues north to the Canada–United States border.

The roadway follows 320th Avenue for 1.3 mile in Roseau County.

The route follows a short part of the former alignment of State Highway 89, north of State Highway 11; until a shortcut was constructed for Highway 89, west of the city of Roseau.

[3] The entire route is in Ross Township, Roseau County.