Harold Parker State Forest is a natural reserve, park, and state recreational facility located in Andover, Massachusetts. The park is managed by the state through the Departmen of Conservation and Recreation.

The Harold Parker State Forest is a 3000 acre forest preserve and recreational area. Because of its large expanse, portions of the park are part of Andover, North Andover, Reading, and Middleton. Its location, only twenty miles north of Boston, makes it a convenient retreat that is accessible to over three million people. The forest itself is classified as a Hardwood-Hemlock-White Pine type of forest.

Popular recreational activities in the park include non-motorized boating, canoeing, swimming, fishing, hiking, mountain biking, horseback riding, wildlife viewing, nature walking, camping, and picnicking.