Hemlock Gorge Reservation is a state park and recreational area in Needham, Massachusetts. It is currently managed by the Massachusetts Department of Conservation and Recreation.

Located along the banks of the Charles River, the Hemlock Gorge Reservation provides a small natural wild area on the boundaries of Needham, Newton, and Natick in eastern Massachusetts. The convenient location of the park makes it a popular recreational area among the local population. The park also features a historic structure, namely the Echo Bridge, which was built in 1877 and considered the second largest masonry arch in the United States at the time of its completion. The bridge was designated as a National Historic Landmark in 1982.

Popular recreational activities in the Hemlock Gorge Reservation include hiking and picnicking.