Onaway State Park is a public recreation area covering 158 acres (64 ha) on the southeast shore of Black Lake in North Allis Township, Presque Isle County, Michigan. The state parks sits at the end of M-211 five miles north of Onaway. It contains sand and cobblestone beaches, large rock outcroppings, a campground, and nature trail highlighting a diversity of trees. The park was added to the National Register of Historic Places in 2009.