Baxter State Park is a large wilderness area permanently preserved as a state park in Northeast Piscataquis, Piscataquis County in north-central Maine, United States. It is in the North Maine Woods region and borders the Katahdin Woods and Waters National Monument on the east. The park was established by 28 donations of land, in trust, from park donor Percival P. Baxter between the years of 1931 and 1962, eventually creating a park of over 200,000 acres in size.