Foldereid is a former municipality in the northern part of the old Nord-Trøndelag county in Norway. The 513-square-kilometre (198 sq mi) municipality existed from 1886 until its dissolution in 1964. The municipality encompassed the area surrounding the inner part of the Folda fjord, the Innerfolda in what is now the municipalities of Nærøysund and Høylandet in Trøndelag county. The village of Foldereid, where the Foldereid Church is located, was the administrative centre of the municipality.