Saybrook Breakwater Lighthouse is a sparkplug lighthouse in Connecticut, United States, at Fenwick Point at the mouth of the Connecticut River near Old Saybrook, Connecticut. It is featured on the state's "Preserve the Sound" license plates.

Old Saybrook is a town in Middlesex County, Connecticut, United States. The town is part of the Lower Connecticut River Valley Planning Region. The population was 10,481 at the 2020 census. It contains the incorporated borough of Fenwick, and the census-designated places of Old Saybrook Center and Saybrook Manor.