The Old Shipbuilder's Historic District is a 287-acre (116 ha) historic district in Duxbury, Massachusetts. The district includes both sides of Washington Street extending from South Duxbury (also known as Hall's Corner) to Powder Point Avenue, including several side streets off of Washington and a small portion of St. George Street and Powder Point Avenue. The district was added to the National Register of Historic Places in 1986. In 1986, the district included 143 buildings deemed to contribute to the historic character of the area.