Forest County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 9,179. Its county seat is Crandon. The Forest County Potawatomi Community and the Sokaogon Chippewa Community have reservations in Forest County.

Crandon is a city in Forest County, Wisconsin, United States; it is in the northeastern part of the state, about 100 miles (160 km) north of Green Bay. The population was 1,713 at the 2020 census. It is the county seat of Forest County and is the only incorporated community in the county. The city is located adjacent to the Town of Crandon.