The Central Square Historic District of Bristol, New Hampshire, encompasses the central commercial district of the town. The square is a four-sided space near the junction of six roadways in the center of Bristol, just north of the Newfound River and west of the Pemigewasset River. The district includes all of the buildings that are arrayed around the square, as well as one contemporary commercial building located just south of the Newfound River on South Main Street. The district was listed on the National Register of Historic Places in 1983.