The Hayward House is a historic house at 9 Hayward Avenue in Colchester, Connecticut. Built in 1775 and embellished in the late 19th century, it is a well-preserved 18th-century house, which has seen a number of locally prominent residents, as well as the nationally known inventor Nathaniel Hayward, who developed the process of vulcanizing rubber. The house was listed on the National Register of Historic Places in 1972.