The Charles O. Boynton Carriage House is a prominent structure in the Sycamore Historic District, located in Sycamore, Illinois.

The Carriage House is considered one of more than 150 contributing properties to the overall historic integrity of the district.

The carriage house was built at the same time as the Queen Anne residence, next door, of Sycamore businessman and land speculator, Charles O. Boynton, in 1887.

[1] The home and the carriage house were held as one property until the Charles O. Boynton House was sold out of the Boynton family in 1986.

[3] At that time the building was converted for use as office space,[3] a function it still served in 2007.