State Trunk Highway 137 (often called Highway 137, STH-137 or WIS 137) is a state highway Bayfield and Ashland counties in northern Wisconsin, United States. It runs from its western terminus at U.S. Route 2 (US 2) west of Ashland to its eastern terminus at WIS 112 in Ashland. Like all Wisconsin state highways, WIS 137 is maintained by the Wisconsin Department of Transportation (WisDOT).