Sachem Rock Farm is a historic farm at 355 Plymouth Street in East Bridgewater, Massachusetts, United States. The farm location is important for a variety of reasons. Its earliest historical association is with the Wampanoag people, who are known to have used the area, particularly around Sachem Rock, a granite outcrop that is the property's high point, prior to European contact. Sachem Rock itself is historically significant as the site of a meeting in 1649 between English settlers from the Plymouth Colony, including Myles Standish, with the Wampanoag sachem Massasoit. In this meeting the colonists purchased rights to a large tract of land, including East and West Bridgewater, Bridgewater, and Brockton.