Fresh Pond is a reservoir and park in Cambridge, Massachusetts. Its grounds were designed in 1897 by the renowned Olmsted Brothers landscape design firm.

Fresh Pond Reservation consists of a 155-acre kettle hole lake, and 162 acres of surrounding land, with a 2.25-mile perimeter road popular with walkers and cyclists. In the mid 1800s, the Pond was privately owned and home to a flourishing ice industry, for ice shipped as far as Europe, China, and India. In 1852, the Pond became the City's drinking water supply. Nowadays, Fresh Pond is parter of the overall Cambridge water system. Its water is purified at the Walter J. Sullivan Water Purification Facility adjacent to the Pond, then pumped upwards to Payson Park Reservoir in Belmont. From there it flows back to Cambridge by gravity, providing drinking water to residents and businesses.