Greenfield State Park is a 400-acre (160 ha) public recreation area in Greenfield, New Hampshire.

The state park features ponds, bogs, and a forest that extends to the shore of undeveloped Otter Lake.

Activities include camping, hiking, swimming, fishing, picnicking, and non-motorized boating.

There is a small store, playground, boat ramp, and rentals.

This New Hampshire state location article is a stub.