Benacre Broad is an isolated coastal lagoon on the North Sea coast of the English county of Suffolk. It is located in the parish of Benacre around 1⁄2 mile north of the village of Covehithe. It is about 2 miles east of Wrentham, 4+1⁄2 miles north of Southwold and 6+1⁄4 miles south of Lowestoft.