Medfield Meadow Lots are a group of wetland meadows—Pratt Meadow, Perry Meadow, and Hinsdale Meadow—located in the Charles River floodplain within Medfield, Massachusetts, United States.^[1] The lots, totaling 16 acres (6.5 ha), are accessible by canoe or kayak only. They were acquired as an open space reserve via land donation by Henry Lee Shattuck in 1968.

The Medfield Meadow Lots are part of a cooperative effort of non-profit organizations and public agencies to protect the natural and ecological character of the Charles River. Including the meadow lots, The Trustees of Reservations has protected over 4,000 acres (1,600 ha) of land on the Charles River floodplain.