The Kickapoo River is a 126-mile-long (203 km) tributary of the Wisconsin River in the state of Wisconsin, United States.
The river begins midway between Wilton, Wisconsin and Mill Bluff State Park and flows south through a deep valley cut into the hilly Driftless Zone of southwest Wisconsin.
It empties into the Wisconsin River just south of Wauzeka, Wisconsin.
Because of the extremely crooked path of the river, its source north of Wilton is just 60 miles (97 km) from its mouth at Wauzeka, although the river is nearly 130 miles (210 km) long. The Kickapoo, the longest tributary of the Wisconsin River, drains over 800 square miles (2,100 km2) of land in Monroe, Vernon, Richland, and Crawford counties.
There are many small tributaries with the most significant being Moore Creek, Billings Creek, the West Fork of the Kickapoo, Reads Creek and Tainter Creek.
