The Jedediah Foster Homesite is a historic archeological site on Foster Hill Road in West Brookfield, Massachusetts. The 0.5-acre (0.20 ha) site was the location of the stately 18th century home of Jedediah Foster, which was built in 1735 by his father-in-law, Joseph Dwight. Dwight (1703-1765) was a leading military figure in colonial Massachusetts, and was active locally in public service. Foster (1726-1779) was one of the most influential figures of his day in central Massachusetts.