Mary’s Pond, also known as Marys Pond, is an 81-acre (330,000 m²) pond in Rochester, Massachusetts. The pond is located east of Leonards Pond. The average depth is 12 feet (3.7 m), and the maximum depth is 32 feet (9.8 m). The outflow is a stream that leads to the Sippican River. Rochester’s town beach is located on the northwestern shore of the pond along Mary’s Pond Road.