State Trunk Highway 112 (often called Highway 112, STH-112 or WIS 112) is a state highway in the U.S. state of Wisconsin. It runs in a north–south in northwest Wisconsin from Marengo to Ashland.

Starting at WIS 13 north of Marengo, WIS 112 starts to travel westward. After over 3 miles (4.8 km) of traveling westward, it then turns northward north of Sanborn. After crossing the river, it then intersects WIS 118. Continuing north, it then encounters the John F. Kennedy Memorial Airport, then enters the city of Ashland, and then intersects WIS 137 before it intersects US 2/WIS 13. At that point, the route ends there.

This section is missing mileposts for junctions. Please help by adding them.

The entire route is in Ashland County.

Location	mi	km	Destinations	Notes
Town of White River			WIS 13 – Mellen, Ashland	Southern terminus
White River–Gingles town line			WIS 118 west – Benoit
Ashland			WIS 137	Southern end of Alternate US 2 and Alternate WI 13 overlap
			US 2 / WIS 13 / LSCT	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

• U.S. Roads portal

• Media related to Wisconsin Highway 112 at Wikimedia Commons