Leinstrand is a former municipality in the old Sør-Trøndelag county, Norway. The 46-square-kilometre (18 sq mi) municipality existed from 1838 until its dissolution in 1964. The municipality of Leinstrand encompassed the south-central part of what is now the city of Trondheim in Trøndelag county. The administrative centre was located in the village of Heimdal, just west of the border with Tiller municipality. The local Leinstrand Church was built in 1673.