The Red River of Wisconsin is a 47.2-mile-long (76.0 km) tributary of the Wolf River. It flows through Gresham and has a dam. Below Gresham, the Red River flows into the Wolf River in northern Shawano County.
The stream headwaters are at 45°04′15″N 89°02′25″W / 45.07083°N 89.04028°W and the confluence with the Wolf is at 44°49′11″N 88°37′41″W / 44.81972°N 88.62806°WCoordinates: 44°49′11″N 88°37′41″W / 44.81972°N 88.62806°W.