Brule River State Forest is a state forest located in Douglas County, Wisconsin, U.S.A. that encompasses the Bois Brule River for most of its length from its headwaters to Lake Superior. It is administered by the Wisconsin Department of Natural Resources and is nearly 47000 acre in size, making it the fourth-largest state park in Wisconsin. It was founded in 1907 and is the second oldest state park after Interstate. The Cedar Island Lodge, or "the Summer White House," where multiple American presidents and generals have vacationed, is located here. The state forest is popular with canoeists, and cross-country skiers.