Chestnut Hill Reservation is a public recreation area and historic preserve surrounding the Chestnut Hill Reservoir in the Chestnut Hill and Brighton neighborhoods of Boston, Massachusetts, United States.

The reserve is part of the Chestnut Hill Reservoir Historic District, is listed on the National Register of Historic Places, and is a City of Boston Landmark.

The reservoir is a popular birding location, where at least 195 species have been observed.

[4] The Reilly Memorial Recreation Center beside the reservoir has a swimming pool and skating rink.

[3] A building across the street from the reservoir, which housed pumping equipment for the water system, has been converted into the Metropolitan Waterworks Museum.